High Speed, Accuracy Laser Displacement Sensor LK G5000 Series User's Manual 96M11282 Lkseries

User Manual: G5000

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96M11282

High-speed, High-accuracy
Laser Displacement Sensor

LK-G5000 Series
User's Manual
Read this manual before use.
Keep this manual in a safe place for future reference.

Introduction
This manual describes the basic operations and hardware functions of the LK-G5000
Series. Before using the LK-G5000 Series, read this manual carefully to ensure complete
understanding so that you can take full advantage of this product’s performance and
functions.
Keep this manual in a safe place for future reference.
Please deliver this manual to the end users of this product.

Symbols
The following symbols alert you to important messages concerning the prevention of
human injury and product damage.
DANGER
Failure to follow the instructions may lead to death or severe injury.
WARNING
Failure to follow the instructions may lead to injury (such as electric shock or burn).
CAUTION
Failure to follow the instructions may lead to property damage or product breakdown.
NOTE

Provides additional information on proper operation.
Reference

Provides reference information or useful information about operation.

Safety Precautions
General cautions
• At startup and during operation, be sure to monitor the functions and performance of
the LK-G5000 Series.
• It is recommended that you take substantial safety measures to avoid any damage in
case of product failure.
• Do not modify the LK-G5000 Series or use it in any way other than as described in the
specifications. The warranty will be voided in such cases.
• When the LK-G5000 Series is used in combination with other devices, functions and
performance may be degraded depending on the operating conditions and
surrounding environment.
• Do not use the LK-G5000 Series for the purpose of protecting the human body.
• Do not allow the temperature to change sharply around the LK-G5000 Series, including
the accessories. Otherwise, condensation may lead to a malfunction.

WARNING
Ensuring safe operation
• Use the proper power supply voltage as specified. Failure to do so may cause a fire,
electric shock, or malfunction.
• Do not attempt to disassemble or modify the unit. Doing so may cause a fire, electric
shock or unit malfunction.

Handling abnormal conditions
Turn off the power immediately in the following cases. Using the LK-G5000 Series in an
abnormal condition could cause product breakdown.
Contact your nearest KEYENCE office for repair.
• If liquid or foreign matter enters the unit.
• If the unit is dropped or the housing is damaged.
• If smoke or an abnormal odor is emitted from the controller.

96M11282

CAUTION
Ensuring safe operation
• Be sure to turn off the power to the LK-G5000 Series and connected devices when you
connect/disconnect the cable to/from them. Failure to do so may result in product
damage.
• Do not turn off the power while any item is being set. Part or all of the settings may be
lost.
• Do not block the vent holes on the unit. The rise in the internal temperature may cause
product failure.

Installation environment
To use the LK-G5000 Series properly and safely, avoid installing it in the following
locations. Doing so may lead to product breakdown.
• Location that is humid, dusty or poorly ventilated
• Location where the temperature becomes high, such as a place exposed to direct
sunlight
• Location where there are flammable or corrosive gases
• Location where the product may be directly subjected to vibration or impact
• Location where water, oil or chemicals may splash onto the product
• Location where static electricity is readily generated

Noise control
When the LK-G5000 Series is installed near a noise source such as a power source or
high-voltage lines, noise may cause a malfunction or failure of the unit. Take corrective
actions against noise by using noise filters, laying cables in a separate conduit, and/or
providing insulation when installing the controller and sensor head. Use a single core
shielded cable for the analog output cable.

Influence of ambient temperature
Changes in the ambient temperature may cause the measurement to fluctuate. Be sure to
keep the temperature constant at all times. When the ambient temperature changes by
10°C, it takes about 60 minutes until the temperature inside the unit is uniformly
distributed.

Ambient light
Do not use the LK-G5000 Series near a lighting system that repeatedly turns on and off
rapidly. If it is unavoidable to use the unit in such a place, install a light shielding board or
a similar object so that the light will not affect the measurement.

Warming up
After turning on the power, wait approximately 30 minutes before using the LK-G5000
Series. Since the circuit is not stable immediately after the power is turned on, the
measured value may gradually change during this period.

Influence of dust or dirt
The measurement may be incorrect when dirt, dust or fluid such as water or oil interferes
with measurement in the following ways.
• Adhesion on the protective glass: Blow the dirt off with clean air. If dirt persists, wipe the
glass surface gently using a soft cloth moistened with alcohol.
• Adhesion on the surface of the measurement target: Blow the dirt off with clean air or
wipe it off.
• Intrusion of floating dust or splash of fluid into the light-axis range: Take corrective
action such as installing a protective cover or air purge.

Other considerations
Influence of vibration
When the measurement target is vibrating, the measured value may fluctuate. In this case,
increase the number of averaging measurements to ensure more accurate measurement.

Measurement target
The measured value may be incorrect if the shape or surface condition of the target varies
with individual targets. In this case, measure a known target and use the calibration
function to correct the error.

Handling
Do not wipe the unit with a wet cloth, benzene, or thinner. This may cause discoloration or
deformation of the housing. If the unit becomes dirty, wipe it off with a cloth moistened with
a mild detergent and then wipe with a soft dry cloth.

Effect of atmospheric motions
Slow atmospheric motions may affect the measurement and result in fluctuation of the
measured value.
In such a case, take the following countermeasures:
• Enclose the sensor head in an appropriate enclosure.

Precautions on CE Marking
The LK-G5000 Series conforms to the CE Marking under the conditions that the following
requirements are satisfied. In order to use the LK-G5000 Series be sure that the following
requirements have already been satisfied beforehand.
The applicable standards (EMC Directive) are listed below:
EMI:EN61326-1, Class A
EMS:EN61326-1
Limit the length of the power supply cable and all input/output cables that are connected
to the terminal panel of the controller to 30 m or less.
NOTE
For the USB cable connected to the terminal panel of the controller, wind two turns of the cable around
the ferrite core of the following model at a distance of 200 mm or less from the USB connector of the
controller.
Model: ZCAT3035-1330 (Manufactured by TDK)

Precautions on wiring
Part of the input/output circuit of the LK-G5000 Series is internally common. Be careful that
no potential difference is generated between the internally common terminals due to the
potential difference between the cables/external devices. Such a potential difference may
cause a breakdown of the product or external devices.

Wiring example
LK-G5001V/LK-G5001 (NPN type)
The 24 VDC (-), COM OUT (COM for output), and COM IN (COM for input) terminals are
common through choke coils respectively. They are also common with COM OUT and
COM IN of the expansion connector through choke coils.
LK-G5001(V)

LK-G5001(V)

COM OUT

COM IN

24 VDC (+)
24 VDC

24 VDC (-)

24 VDC (-)
The power supply terminal (24 VDC) is
short-circuited through the COM terminals,
resulting in product failure.

LK-G5001PV/LK-G5001P (PNP type)
The 24 VDC (-) and COM IN terminals are common through choke coils. They are also
common with COM IN of the expansion connector through choke coils.
LK-G5001P(V)

LK-G5001P(V)

COM OUT

COM IN

24 VDC (+)
24 VDC

24 VDC (-)

24 VDC (-)
The power supply terminal (24 VDC) is
short-circuited through the COM terminals,
resulting in product failure.

Caution for all types
The 24 VDC (-) terminal, SG (GND) of the USB port, and SG (GND) of the RS-232C
connector are common through choke coils. Be careful that no potential difference is
generated between these terminals and the external devices such as a PC or PLC. If any
potential difference exists, isolate the I/O terminals of the LK-G5000 Series except for
those used for the power supply, RS-232C and USB.

Precautions on use in a positive ground environment
When using the LK-G5000 Series in a positive ground environment, be careful of a short
circuit caused through the COM terminals.
LK-G5001V/LK-G5001 (NPN type)
LK-G5001(V)
Ground

24 VDC

LK-G5001(V)
Ground

COM OUT

COM IN

24 VDC (+)

24 VDC

24 VDC (-)

24 VDC (+)
24 VDC (-)

The power supply terminal (24 VDC) is
short-circuited through the COM terminals,
resulting in product failure.

LK-G5001PV/LK-G5001P (PNP type)
LK-G5001P(V)

LK-G5001P(V)
Ground

24 VDC

Ground
COM OUT

COM OUT

COM IN

24 VDC (+)
24 VDC (-)

24 VDC

24 VDC (+)
24 VDC (-)

The power supply terminal (24 VDC) is
short-circuited through the COM terminals,
resulting in product failure.

Precautions on connection with a PC or other external device
In a positive ground environment, when the LK-Navigator 2 software is used by
connecting a PC through USB or LAN, or when RS-232C communication is used with a
PC, be careful of a short circuit created between the internal components of the PC and
the SG (GND) terminal of the LK-G5000.
The 24 VDC (-) terminal, SG (GND) of the USB port, SG (GND) and 24 VDC (-) of the RS232C connector, and SG (GND) of the Ethernet port are common through choke coils
respectively. Be careful that no potential difference is generated between these terminals
and the external device such as a PC or PLC. If any potential difference exists, isolate the
external device or the I/O terminals of the LK-G5000 Series except for those used for the
power supply, RS-232C, USB and LAN.

PC
(1)

LK-G5001P(V)

Ground
(2)

Ground GND for
terminal RS-232C/
USB/LAN

RS-232C/
USB/LAN
cable
24 VDC

GND for
RS-232C/
USB/LAN
24 VDC(+)
24 VDC(-)

If the power supply terminal (24 VDC) is short-circuited through the internal component of the PC and
the SG (GND) terminal of the LK-G5000 Series, a product breakdown may occur. If this is the case,
isolate either the PC (1) or the LK-G5000 Series (2).

NOTE
The internal wiring of a PC or PLC varies depending on the device. Refer to the instruction manual of
the device for details.

Safety precautions on laser products
The models of the LK-G5000 Series are classified as follows in terms of laser class:
Model

Wavelength
FDA (CDRH)
Part 1040.10
IEC60825-1

LK-H020/
LK-H025/
LK-H050/
LK-H055

LK-H080/
LK-H085/
LK-H150/
LK-H155

LK-H023/
LK-H028/
LK-H053/
LK-H058

655 nm
0.3mW
Class II

LK-H022/
LK-H027/
LK-H022K/
LK-H027K/
LK-H052/
LK-H057/
LK-H052K/
LK-H057K/
LK-H082/
LK-H087/
LK-H152/
LK-H157
650 nm
0.95 mW
Class II

4.8 mW
Class IIIa

655 nm
4.8 mW
Class IIIa

690 nm
50 mW
Class IIIb

0.3mW
Class 1

0.95 mW
Class 2

4.8 mW
Class 3R

50 mW
Class 3B

LK-H008/
LK-H008W

Output
Laser
class
Output
Laser
class

WARNING
Use of controls or adjustments or performance of procedures other than those specified herein may
result in hazardous radiation exposure.

Precautions on class IIIb/3B laser products
MPE (maximum permissible exposure): 2.5 mW/cm2
NOHD (nominal ocular hazard distance): 68 cm (LK-H023),101 cm (LK-H028),
143 cm (LK-H053), 280 cm (LK-H058) from the transmitter
Follow the instructions mentioned in this manual. Otherwise, injury to the human body
(eyes and skin) may result.
• Do not directly look at or touch the laser beam and its reflection from a mirror-like
surface.
• Do not direct the beam at other people or into areas where other people unconnected
with the laser work might be present.
• Prevent the diffusion of the laser beam.
Make the laser path as short as possible and be sure to terminate it with a diffusion
reflector or diffusion absorber which has proper reflectance and thermal characteristic.
(It is recommended that you install a protective enclosure.)
• Install the laser product carefully so that the laser beam is not unintentionally directed at
mirror-like surfaces.
• Wear protective eye goggles appropriate for the laser beam wavelength.

• Do not disassemble this product. Laser emission from this product is not automatically
stopped when it is disassembled.
• Clean the aperture regulary. In addition, stop the emission of the laser beam when
cleaning.
• Use an interlock function to block laser radiation in an emergency.
• Prevent prohibited laser radiation use by providing a key-operated switch or other
control on the control panel.
• Install the products so that the path of the laser beam is not as the same height as that
of human eye.

Precautions on class IIIa/3R laser products
Follow the instructions mentioned in this manual. Otherwise, injury to the human body
(eyes and skin) may result.
• Do not direct the beam at other people or into areas where other people unconnected
with the laser work might be present.
• Never look at the laser beam through optical instruments such as a microscope or a
telescope.
• Prevent the diffusion of the laser beam.
Make the laser path as short as possible and be sure to terminate it with a diffusion
reflector or diffusion absorber which has proper reflectance and thermal characteristic.
(It is recommended that you install a protective enclosure.)
• Install the products so that the path of the laser beam is not as the same height as that
of human eye.
• Install the laser product carefully so that the laser beam is not unintentionally directed at
mirror-like surfaces.
• It is recommended that you wear protective eye goggles.
• Do not disassemble this product. Laser emission from this product is not automatically
stopped when it is disassembled.
• Do not directly look at or touch the laser beam and its reflection from a mirror-like
surface.

Precautions on class II/2 laser products
Follow the instructions mentioned in this manual. Otherwise, injury to the human body
(eyes and skin) may result.
• Do not stare into the beam.
• Do not direct the beam at other people or into areas where other people unconnected
with the laser work might be present.
• Be careful of the path of the laser beam. If there is a danger that the operator may be
exposed to the laser beam reflected by specular or diffuse reflection, block the beam by
installing an enclosure with the appropriate reflectance.
• Install the products so that the path of the laser beam is not as the same height as that
of human eye.
• Do not disassemble this product. Laser emission from this product is not automatically
stopped when it is disassembled.

Precautions on Class 1 Laser Products
Follow the instructions mentioned in this manual. Otherwise, injury to the human body
(eyes and skin) may result.
• Do not stare into the beam.
• Do not disassemble this product. Laser emission from this product is not automatically
stopped when it is disassembled.

Safety features of the laser product
The LK-G5000 Series is equipped with the following safety features.
 Laser radiation emission indicator
Lights or flashes while the LK-G5000 Series is in operation.

Laser emission LED

Lights or flashes while the LK-G5000 Series is in operation.

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

R ON

-G

OU
T(V)
OU
T(A
)
OU
T 0V
OU
T(V)
OU
T(A
)
OU
T 0V

US
B
2
HE

-232

DC 24V

LASER 1

TIMING 1 ZERO 1

COM IN

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

DIS

LASER ON (laser emission) lamp

 LASER CTRL terminals
The operation is different between the laser class 3B sensor head (LK-H023/LK-H028/LKH053/LK-H058) and the laser class 1, 2 or 3R sensor head.
NPN type
-G
LK

(V)
(A)
R ON

0V
1

(V)

PNP type

LASER
CTRL 1

LASER
CTRL 2

COM IN

(A)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

0V
2
T

ETH

2 HE

1 HE

-23

TIMING 1 ZERO 1

COM IN

AY
PL

DC 24V

LASER 1

DIS

Refer to "12-pin terminal block" (page 4-2) for details about the connecting terminals.
When a laser class 3B sensor head (LK-H023/LK-H028/LK-H053/LK-H058) is used
Provide a key-operated switch between the LASER CTRL1/LASER CTRL2 terminal and the
COM IN terminal. Use a key-operated switch which can be removed only when the laser
emission is off.
• NPN output type:Laser beam emission starts when the key-operated switch is operated
to turn ON (close) the circuit between the LASER CTRL1/LASER CTRL2 terminal and the
COM IN terminal.
• PNP output type:Laser beam emission starts when the key-operated switch is operated
to turn ON (apply voltage to) the circuit between the LASER CTRL1/LASER CTRL2
terminal and the COM IN terminal.

-G
LK

(V)
(A)
R ON

0V
1

(V)
(A)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

0V
2
T

ETH

2 HE

TIMING 1 ZERO 1

COM IN

-23

1 HE

DC 24V

LASER 1

DIS

NOTE
Control with a key-operated switch is required when at least one class 3B sensor head is connected.

Example of applicable key-operated switch
CK-M12BFS1 keylock switch manufactured by Nihon Kaiheiki
Use a key-operated switch which can be removed only when the laser emission is off.
When only a laser class 1, 2 or 3R sensor head is used
• NPN output type: Laser beam emission stops when the circuit between the LASER
CTRL1/LASER CTRL2 terminal and COM IN terminal is short-circuited.
• PNP output type: Laser beam emission stops when voltage is applied to the circuit
between the LASER CTRL1/LASER CTRL2 terminal and COM IN terminal.

 REMOTE terminal
Laser beam emission can be stopped by opening the circuit between the REMOTE
terminal and COM IN terminal.
Refer to "12-pin terminal block" (page 4-2) for details about the connecting terminals.

-G
LK

(V)
(A)
R ON

0V
1

COM IN

(V)
(A)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

0V
2
T

ETH

2 HE

-23

TIMING 1 ZERO 1

COM IN

REMOTE

Illuminates when short-circuited

AY
PL

DC 24V

LASER 1

DIS

1 HE

 Shutter
• You can prevent the laser beam emission by closing the shutter.
• The shutter is provided for the following sensor head models:
LK-H023/LK-H028/LK-H053/LK-H058
• To block the laser beam, attach the shutter to cover the lens surface with the supplied
M1.6 screws.

• When the shutter is unnecessary, secure it next to the warning indicator.

Warning labels
The description on the warning labels attached to the LK-G5000 Series and the label
locations are described below.
The FDA (CDRH) warning labels are attached to the unit when the product is shipped from
the factory. Labels other than the FDA (CDRH) label are supplied with the product. Attach
the other label(s) to the locations as shown in the figures on page 20 according to the
destination of the product. Warning labels are not attached with LK-H008/LK-H008W,
because these models are Laser Class 1 Product according to IEC60825-1.
 Label description
LK-H008/LK-H008W
FDA（CDRH）

CAUTION
AVOID EXPOSURE
LASER RADIATION
IS EMITTED FROM
THIS APERTURE.

LASER RADIATIONDO NOT STARE INTO BEAM
SEMICONDUCTOR LASER
WAVELENGTH
655nm
MAXIMUM OUTPUT
0.3mW
CLASS LASER PRODUCT

LK-H022/LK-H027/LK-H022K/LK-H027K/LK-H052/LK-H057/LK-H052K/
LK-H057K/LK-H082/LK-H087/LK-H152/LK-H157
FDA (CDRH)

IEC (English)

DIN (German)

IEC (French)

CEI (Italian)

JIS (Japanese)

GB (Simplified Chinese)

LK-H020/LK-H025/LK-H050/LK-H055
FDA (CDRH)

IEC (English)

DIN (German)

IEC (French)

CEI (Italian)

JIS (Japanese)

GB (Simplified Chinese)

LK-H080/LK-H085/LK-H150/LK-H155
FDA (CDRH)
AVOID EXPOSURE
LASER RADIATION
IS EMITTED FROM
THIS APERTURE.

LASER RADIATIONAVOID DIRECT EYE EXPOSURE
SEMICONDUCTOR LASER
WAVELENGTH
655nm
MAXIMUM OUTPUT
4.8mW
CLASS a LASER PRODUCT

IEC (English)

DIN (German)
LASERSTRAHLUNG

LASER RADIATION
AVOID DIRECT EYE EXPOSURE
AVOID
EXPOSURE
Laser radiation
is emitted from
this aperture.

Maximum output
Wavelength

4.8mW
655nm

CLASS 3R LASER PRODUCT
IEC/EN 60825-1 : 2007

IEC (French)

DIREKTE BESTRAHLUNG
DER AUGEN VERMEIDEN

BESTRAHLUNG
VERMEIDEN
Austritt von
Laserstrahlung.

RAYONNEMENT LASER
4.8mW
Emission maximale
655nm
Longueur d onde
APPAREIL A LASER DE CLASSE 3R
CEI/EN 60825-1 : 2007

JIS (Japanese)

この開口から
レーザ光が
出ます

DIN EN 60825-1 : 2008

RADIAZIONE LASER
EVITARE L ESPOSIZIONE
DIRETTA DEGLI OCCHI

EVITARE
L ESPOSIZIONE
Da questa apertura
e emessa
radiazione laser.

Emissione massima
Lunghezza d onda

4.8mW
655nm

APPARECCHI0 LASER DI CLASSE 3R
CEI EN 60825-1 : 2009

GB (Simplified Chinese)
激光辐射
勿直视或通过光学仪器直接观看光束

レーザ放射
被ばく回避のこと

4.8mW
655nm

LASER KLASSE 3R

CEI (Italian)
EXPOSITION DIRECTE
DANGEREUSE POUR LES YEUX

EXPOSITION
DANGEREUSE
Un rayonnement
laser est emis par
cette ouverture.

Maximale Ausgangsstrahlung

Wellenlange

ビームの被ばくを避けること
最大出力
4.8mW
波長
655nm
クラス3R レーザ製品
JIS C6802 2005

激光窗囗
避免受到从本窗囗
射出的激光辐射的
照射

最大输出
波长

３Ａ类激光产品

4.8mW
655nm
ＧＢ７２４７．１－２００１

LK-H023/LK-H028/LK-H053/LK-H058
FDA (CDRH)

IEC (English)

DIN (German)

IEC (French)

CEI (Italian)

JIS (Japanese)

GB (Simplified Chinese)

 Label attachment locations

LK-H008/LK-H008W

LK-H020/LK-H025/LK-H022/
LK-H027/LK-H023/LK-H028/
LK-H022K/LK-H027K

LK-H050/LK-H055/LK-H052/
LK-H057/LK-H053/LK-H058/
LK-H052K/LK-H057K

LK-H080/LK-H085/LK-H082/
LK-H087

LK-H150/LK-H155/LK-H152/
LK-H157

Contents

Initializing the LK-G5000 Series to the
Factory Default Settings ...............1-31

Introduction ............................................. 2
Safety Precautions ................................... 3
General cautions ................................ 3
WARNING........................................... 3
CAUTION............................................ 4
Other considerations .......................... 5
Precautions on CE Marking................ 6
Precautions on wiring ......................... 7
Safety precautions on laser products... 10
Contents ................................................ 21

Chapter 2

Chapter 1

Before Use

System Configuration ...........................1-2
Checking the Package Contents ..........1-3
LK-G5001V/LK-G5001PV
(Single unit type controller)..........1-3
LK-G5001/LK-G5001P
(Separate type controller) ............1-3
LK-HA100 (Head expansion unit) ...1-4
LK-HD500 (Separate type display
panel)...........................................1-4
LK-HD1001 (Touch panel) ..............1-4
Sensor head ....................................1-5
CB-A07/CB-A2/CB-A5/CB-A10/
CB-A20/CB-A30...........................1-5
CB-A5E/CB-A10E ............................1-5
Part Names and Functions ...................1-6
Controller .........................................1-6
Sensor head ....................................1-9
Mounting/Connecting the Units ..........1-10
Attaching the ND Filter (Option) ....1-10
Mounting the sensor head.............1-10
Mounting the sensor head according
to the measurement target.........1-16
Mounting the controller..................1-17
Connecting the units .....................1-26
Outline of the Measurement and
Settings .........................................1-29
Mode selection ..............................1-29
Setting mode .................................1-30

Operations during
Measurement and
Their Functions

Switching the Measurement Value
Displays ..........................................2-2
Setting the Tolerance Comparator Value ..2-4
The function of the tolerance
comparator setting.......................2-4
Hysteresis........................................2-6
Instantaneous Zero Setting (Auto-Zero) ....2-7
Instantaneous Master Adjustment
(Auto-offset) ....................................2-9
Program Function ...............................2-10
Switching Program Nos. .....................2-11
Storing Measured Values in the Memory
(Data Storage Function) ...............2-12

Chapter 3

Function Settings

Measurement, Data Flow and Functions ..3-2
Setting the sensor head (HEAD) ..........3-3
List of functions and function Nos. ..3-3
List of initial values and
setting ranges ..............................3-4
List of the Head settings screens....3-5
Setting ABLE (ABLE) .......................3-6
Setting the measurement mode
according to the target
(Measurement mode) ..................3-8
Specifying the action when
measurement becomes impossible
(Alarm handling) ........................3-10
Automatically adjusting the ABLE
adjustment range according to the
target (ABLE calibration) ...........3-13
Setting the mounting mode according
to the sensor head mounting method
(Mounting mode) .......................3-15

Specifying two points in the
measurement range to exclude a
certain area from the measurement
(Mask setting)............................ 3-16
Preventing measurement fluctuations
by ignoring sudden changes in the
measured value (Median) ......... 3-18
Grouping the laser control operation
(LASER CTRL group) ................ 3-20
Setting the measurement position
(Range) ..................................... 3-21
Setting the reference starting point for
peak counting (Base point)....... 3-22
Setting the measurement value output
conditions (OUT) .......................... 3-24
List of functions and function Nos. 3-24
List of initial values and
setting ranges ........................... 3-26
List of the OUT settings screens... 3-27
Setting the OUT calculation
(Calculation method)................. 3-28
Calibrating the displayed value based on
the measured value (Scaling)........ 3-31
Apply a filter to ensure stable
measurement (Filter) ................. 3-33
Using the Hold function
(Measurement mode)................ 3-37
Setting the trigger condition
(Trigger) ................................... 3-45
Using offset in the measurement
(Offset) ...................................... 3-47
Setting the unit and minimum display
unit (Minimum display unit) ....... 3-48
Scaling the analog output (Analog
scaling)...................................... 3-50
Setting the type of measurement
(Measurement type) .................. 3-53
Setting the Common Function
(OPTION) ..................................... 3-55
List of functions and function Nos. 3-55
List of initial values and
setting ranges ........................... 3-56
List of the common function settings
screens...................................... 3-57

Setting the sampling cycle for the
measurement
(Sampling cycle) ....................... 3-58
Setting the mutual interference
prevention function (Mutual
interference prevention) ............ 3-60
Setting the external synchronous input
(Synchronization setting)........... 3-62
Setting the output form of the
tolerance comparator result
(Comparator output form) ......... 3-63
Setting the strobe output time
(Strobe time).............................. 3-64
Storing the measured values in the
memory
(Data storage function).................. 3-65
Assigning OUT to the analog output
channel (Analog output)............ 3-67
Setting the type of alarm output
(Alarm output type) ................... 3-68
Setting the Operating Environment settings
(ENV) ............................................ 3-69
List of functions and function Nos. ... 3-69
List of initial values and
setting ranges .......................... 3-70
List of the Environment
settings screens ........................ 3-71
Setting the RS-232C communication
parameters (RS-232C) .............. 3-72
Setting the program switching method
(Setting selection) ..................... 3-73
Copying/initializing the program
(Program) .................................. 3-74
Preventing erroneous panel operation
(Panel lock) ............................... 3-76
Specifying the number of OUT to be
used (Active OUT count)........... 3-78
Specifying the number of sensor heads
to be used
(Active head count)................... 3-79
Specifying the number of analog output
channels (Active analog output
channel count) .......................... 3-80

Setting the necessary information to
connect to a network
(LAN setting)..............................3-81

Chapter 4

I/O terminals

Names and functions of the I/O
terminals .........................................4-2
Function of the I/O terminals ...........4-2
Functions of the I/O Signals ............4-8
Timing diagrams .................................4-15

Chapter 5

RS-232C

Specifications .......................................5-2
Pin assignment ................................5-2
Communication parameters ............5-3
Communication operations for the
measuring status and
communication mode ..................5-3
Setting outline according to external
devices ........................................5-3
Measured Value Output and Changing
Settings through Commands ..........5-4
Connecting a PC/PLC link unit ........5-4
Mode change command .................5-7
Measurement control command
format...........................................5-8
Setting change command .............5-14
Setting confirmation command
format.........................................5-25
Timing diagrams............................5-35
Data Storage Function ........................5-36
Environmental settings ..................5-36
Command input/output procedure ...5-36
Measured Value Output through External
Synchronization ............................5-38
Environment settings parameters..5-38
Output type....................................5-38
Timing diagrams............................5-39
Output format ................................5-40
ASCII code table (Reference) .......5-40

Chapter 6

Specifications

Specifications .......................................6-2
Controller .........................................6-2
Sensor head ....................................6-4
Expansion unit .................................6-9
Head-to-controller cable ...............6-11
Head-to-controller extension cable ...6-11
Status table....................................6-12
Response delay time.....................6-14
Dimensions .........................................6-15
Controller .......................................6-15
Sensor head ..................................6-18
Expansion unit ...............................6-22
Characteristics ...................................6-25
Beam spot diameter ......................6-25
Mutual interference........................6-27
Optical axis range .........................6-30

Appendices
Troubleshooting ................................... A-2
Error Codes ......................................... A-5
List of Optional Accessories ................ A-7
Type of Measurement and Sampling
frequency.................................... A-9
Relationship Between the Sampling Cycle
and Velocity/Acceleration
Measurement Range ................... A-11
Index .................................................. A-12

MEMO

Before Use

This chapter describes the configuration of the LK-G5000
Series, the operational precautions and the preparations
required before using it. Be sure to read this chapter
thoroughly before using the LK-G5000 Series.

System Configuration ........................................................... 1-2
Checking the Package Contents .......................................... 1-3
Part Names and Functions ................................................... 1-6
Mounting/Connecting the Units .......................................... 1-10
Outline of the Measurement and Settings .......................... 1-29
Initializing the LK-G5000 Series to the Factory Default Settings .. 1-31

1-1

1 Before Use

System Configuration
The LK-G5000 Series can be used along with commercially-available devices for various
purposes.

1
Enables control and
measured value reading
through RS-232C
communication or the parallel
I/O board of the PC.

LK-G5000 Series
Indicator, buzzer
Issues an alarm
depending on the
comparator result output.
LK Navigator2
Setup support software (LK-H2)*2
USB/RS-232C

Head
expansion unit
LK-HA100
Photoelectric sensor,
proximity sensor
Transmits a signal to the
synchronous input when
the target is detected.

CC-Link
communication unit*4
LK-CC100
DeviceNet
communication unit*4
LK-DN100

Programmable logic
controller (PLC)
Enables synchronization
control of the measurement
and program number
switching as well as reading
of control output and
measured values.

OUT

1
HI
GO
LO

LK-

HD5
TIM 00

OUT

2
HI
GO
LO

HEA
D1
HEA
D2

TIM
LASE
R
LASE ON
R ON
PRO

SET

GRA

STABI
LITY
STABI
LITY

BRIGH
T
BRIGH
T

DARK
DARK

ZER
O

ENT

Controller*1
LK-G5001/5001P

Dedicated touch panel*3
LK-HD1001

Recorder
Records the measurement
result.

Head (12 heads max.)

*1: The single unit type controller (LK-G5001V/LK-G5001PV) can be separated into the display panel
and controller unit. They can also be purchased separately.
The single unit type controller is labeled as LK-HD500 on the display panel side and as LK-G5001
or LK-G5001P on the terminal panel side.
*2: For details about the LK-Navigator 2 setup support software (LK-H2), refer to the "LK-Navigator 2
User's Manual" (provided as a PDF file on the CD-ROM).
*3: For details on the dedicated touch panel (LK-HD1000), refer to the LK-HD1000 User's Manual.
*4: For details on the CC-Link communication unit (LK-CC100) and the DeviceNet communication unit
(LK-DN100), refer to the LK-CC100/LK-DN100 User's Manual.

1-2

1 Before Use

Checking the Package Contents
The LK-G5000 Series consists of the following models. Ensure that all the components
and accessories listed below are included in the package of the model you purchased
before using the unit.

LK-G5001V/LK-G5001PV (Single unit type controller)
Controller
LK-G5001V/
LK-G5001PV: 1

User's
Manual
(This manual): 1

Screwdriver: 1

• Setup support software
LK-Navigator 2
• Setup support software
User's Manual (PDF file)
• USB cable (2 m)

HI
GO
LO

LK
-H
D5
TIM 00

HI
GO
LO

HEAD
HEAD1
2

TIM
LAS
ER
LAS ON
ER
ON
PR
OG

STA
BILI
STA TY
BILI
TY

BRI
GHT
BRI
GHT

DAR
K
DAR
K

Packaged separately
LK-H2 (CD-ROM)

LK-G5001/LK-G5001P (Separate type controller)
Controller
LK-G5001/
LK-G5001P: 1

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

LAS
ER

ETH
ERN
ET

-G

OUT
(V)
OUT
(A)
OUT

0V
OUT
(V)
OUT
(A)

OUT

2
HE

-23

DC 24V

LASER 1

TIMING 1 ZERO 1

COM IN

US
B

DIS

PLA
Y

User's
Manual
(This manual): 1

Screwdriver: 1

Packaged separately
LK-H2 (CD-ROM)

• Setup support software
LK-Navigator 2
• Setup support software
User's Manual (PDF file)
• USB cable (2 m)

1-3

1 Before Use

LK-HA100 (Head expansion unit)

Head expansion unit
LK-HA100: 1

-H

Instruction
Manual: 1

POW
ER
STA

BIL

ITY

BRI

DAR
K

(V)
(A)
(A)

LK-HD500 (Separate type display panel)
Display panel
LK-HD500: 1

Display panel
attachment ring: 1

HI
GO
LO

LK
-H
D5
TIM 00

HI
GO
LO

HEAD
HEAD1
2

TIM
LAS
ER
LAS ON
ER
ON
PR
OG
RA
M

SE
T

STA
BIL
STA ITY
BIL
ITY

BRIGH
T
BRIGH
T

DARK
DARK

ZE
RO

EN
T

NOTE
The cable connecting the controller is sold separately (page A-7).

LK-HD1001 (Touch panel)
Touch panel
LK-HD1001: 1

Mounting bracket: 4

User's
Manual: 1

NOTE
The cable connecting the controller is sold separately (page A-7).

1-4

1 Before Use

Sensor head
Sensor head: 1

Laser label sheet: 1

The Laser label sheet is not
attached with LK-H008/LK-H008W.

CB-A07/CB-A2/CB-A5/CB-A10/CB-A20/CB-A30
Head-to-controller cable: 1
•
•
•
•
•
•

CB-A07: 0.7 m cable
CB-A2: 2 m cable
CB-A5: 5 m cable
CB-A10: 10 m cable
CB-A20: 20 m cable
CB-A30: 30 m cable

CB-A5E/CB-A10E
Head-to-controller extension cable: 1
• CB-A5E: 5 m extension cable
• CB-A10E: 10 m extension cable

NOTE
• For each sensor head connection, use only one head-to-controller extension cable and limit the
total length to 30 m at maximum.
• You cannot connect the CB-AE to the CB-A30.
• You cannot connect two CB-A10E cables to the CB-A10.

The package contents have been carefully inspected; however, if any component is
defective or damaged, contact your nearest KEYENCE office (address listed at the end of
this manual).
For the optional products, refer to "List of Optional Accessories" (page A-7).

1-5

1 Before Use

Part Names and Functions
This section describes the name and functions of each component.

Controller
Display panel
(1) Display panel housing
(2) Comparator output indicators

(1)
(2)
(3)

Lights during the comparator output (HI, GO, or LO).

(3) TIM (synchronous input) indicator
Lights when the synchronous signal is being input.

(4) Measured value display
Displays the measured value, tolerance comparator value,
or the setting items during setting.
Green: Within the tolerance limits Red: Outside the tolerance limits

LK-HD500
HI

LASER ON

Laser emission LED. Lights while the LK-G5000 Series
is in operation.

STABILITY

Lights in green or orange when the result is within the
measurement range. Lights in red when the result is
outside the measurement range, when an alarm is
issued, or when the laser is off.

BRIGHT

Lights when the excessive light intensity alarm is
triggered.

DARK

Lights when the insufficient light intensity alarm is
triggered.

TIM

_88.8888
HI

(4)

TIM

_88.8888
HEAD1
HEAD2

(5) Sensor head status indicators
Display the laser emission status or the measurement
status.

LASER ON

STABILITY

BRIGHT

LASER ON

STABILITY

BRIGHT

PROGRAM

DARK
DARK

(5)

ZERO

(6)
SET

ENT

(7)

(6) Operation keys
Refer to "Operation keys" (page 1-7).

(7) Display panel fixing screw

Items shown on the measured value display and their meanings
Display
Numerical value (±999999)
FFFFFF (HI output: ON, Monitor
output: +10.8 V)
-FFFFFF (LO output: ON, Monitor
output: -10.8 V)
-----(HI, GO, and LO output: OFF,
Monitor output: -10.8 V)

1-6

Description
The measurement result is displayed as a numerical value. The
display unit, decimal point position, and minimum display unit vary
depending on the settings.
Displayed when the result exceeds the display range.
Displayed when the result is below the display range.
This is also displayed while in alarm status (HI/LO output: ON).
Displayed while in comparator standby status.

1 Before Use

Operation keys
Key

Function

PROGRAM

• When this key is pressed during measurement, the Program switching mode is invoked.

SET

• When this key is pressed during measurement, the Tolerance setting mode is invoked.
When it is pressed for one second, the Operation setting mode is invoked.
• When this key is pressed during setting, the setting is canceled and the operation
returns to the previous step.

ENT

• When this key is pressed during measurement, the OUT display setting mode is invoked.
• When it is pressed during setting, the setting is accepted.

ZERO

• When this key is pressed during measurement, the measured value is set to zero. When
it is pressed for three seconds, the auto-zero setting is canceled.
• When this key is pressed for three seconds during numerical value input, the value and
selected item are initialized.
• When this key is pressed during setting, the display is switched to the next setting item.
• When it is pressed during numerical value input, the current digit shifts to the right by
one. When it is pressed for one second or more, the digits shift continuously.
• When this key is pressed during measurement, the display is changed in the order of upper
window only, lower window only, dual display, and repeats.
• When it is pressed during setting, the setting item is changed. When it is pressed during
numerical value input, symbols are switched or a numerical value is set. When it is
pressed for one second or more, the values change continuously.

Terminal panel
(1) Expansion connector (page 4-5)
LK-G5000

(3) 6-pin terminal block (page 4-4)
(4) Ethernet connector
Used to connect a PC through Ethernet. Refer to "LKNavigator 2 User's Manual" for details.

LASER ON

(V)
1

(6) HEAD connector

(V)
2

LASER 1

(1)
(2)
(3)

(A)
0V

(4)
2 HEAD
USB

DC 24V

Used to connect a PC through USB. Refer to "LKNavigator 2 User's Manual" for details.

(A)
0V

ETHERNET

(5)
(6)

RS-232C

1 HEAD

(5) USB connector

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

COM IN

Lights while the LK-G5000 Series is in operation.

TIMING 1 ZERO 1

(2) LASER ON (laser emission) lamp

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

(7)

DISPLAY

(8)
(9)

(7) RS-232C connector (page 5-2)
Used for communication with a PC or PLC.

(8) DISPLAY (display panel) connector
Connects the communication cable to the display panel (LK-HD500) or to the dedicated
touch panel (LK-HD1001).

(9) 12-pin terminal block (page 4-2)
1-7

1 Before Use

LK-HA100 head expansion unit
(1) POWER lamp
LK-HA100

Lights when the power is on.

POWER

(1)

STABILITY

(2) Sensor head status indicator

(2)

BRIGHT
DARK

Displays the laser emission status or the measurement
status.
STABILITY

Lights in green or orange when the result is within the
measurement range. Lights in red when the result is
outside the measurement range, when an alarm is
issued, or when the laser is off.

BRIGHT

Lights when the excessive light intensity alarm is
triggered.

DARK

Lights when the insufficient light intensity alarm is
triggered.

(3)
(V)
(A)
(A)

(4)

HEAD

(5)

(3) Connector
(4) Terminal block
Used for analog monitor output.
OUT (V)

Analog voltage output
Outputs the displayed value as voltage within the
range of ±10.5 V.

OUT (A)

Analog current output
Outputs the displayed value as a current within the
range of 3.6 mA to 20.4 mA.

OUT 0 V

0 V terminal for OUT

The 6-pin terminal block of the controller corresponds to analog outputs CH01 and CH02.
The terminal blocks of the head expansion units correspond to analog outputs CH03 to
CH12 respectively from the controller side.
For details about the analog output channel assignment, refer to "Assigning OUT to the
analog output channel (Analog output)" (page 3-67).

(5) HEAD connector

1-8

1 Before Use

Sensor head
(1) Laser emission LED

(1) (2) (3)

Lights or flashes while the LK-G5000 Series is
in operation.
Status

LED

Target is at the center of the
measurement range.

Lights in green

Target is within the
measurement range.

Lights in orange

Target is outside the
measurement range.
Alarm
Laser off

Flashes in orange

(2) Mounting holes

(4)(5)

(3) Connecting cable
(1)

Connected to the head-to-controller cable.

(2) (3)

(4) Sensor (transmitter)
Emits the laser beam for measurement. This
part is protected with a glass cover.

(5) Sensor (receiver)
Receives the laser beam for measurement.
This part is protected with a glass cover.

(6) Laser attenuator (shutter)
mounting holes
(4)(5)(6)

Used to attach the laser attenuator for the
laser class 3B sensor head.
(1)

(1)

(2) (3)

(4) (5)

(6)

(1)

(2) (3)

(4)

(5) (6)

(2) (3)

(4)

(5) (6)

1-9

1 Before Use

Mounting/Connecting the Units
Attaching the ND Filter (Option)

If the head is installed for specular reflection and the measurement target is a shiny mirror
or glass surface, the received light intensity may saturate. In such a case, by attaching the
ND filter (LK-F2/LK-F3) saturation can be avoided, thus enabling accurate measurements
to be taken.
• LK-H085/LK-H087

• LK-H155/LK-H157

ND filter
LK-F3

Mounting screw x 2
(M1.6 x 3 countersink-head screw)

ND filter
LK-F2

Mounting screw x 2
(M1.6 x 3 countersink-head screw)

Mounting the sensor head
Determine the distance between the sensor head and the measurement target, and
secure the head using screws through the two mounting holes.
NOTE
It is recommended that you provide insulation when the LK-G5000 Series is used in a positive ground
environment.

 Ambient temperature for the sensor head
When the sensor head is mounted onto a plastic object, limit the ambient temperature to 45C or lower.

1-10

1 Before Use

LK-H008/LK-H008W
 Mounting method

M4, 35 mm or more

 Measurement range

Reference
distance

8 mm
0 mm

Measurement
range

+0.5 mm
-0.5 mm

Reference
• The laser emission LED lights in green within approximately ±0.025 mm of the reference position,
and lights in orange in any other position within the measurement range.
• The following table shows the measurement ranges for the sampling cycle between 2.55 μs and 10
μs.
Range
setting

Center

Far

2.55 μs

±40 μm

-420 to -500 μm

5 μs

±180 μm

-140 to -500 μm

10 μs

±460 μm

+420 to -500 μm

1-11

1 Before Use

LK-H020/LK-H025/LK-H022/LK-H027/LK-H023/LK-H028/LK-H022K/LK-H027K
 Mounting method

M4, 40 mm or more

 Measurement range
• Diffuse reflection mounting

Reference
distance

20 mm

Reference
distance
Measurement
range

+3 mm
-3 mm

0 mm

• Specular reflection mounting

16.1 mm

Measurement
range

0 mm

+2.8 mm
-2.8 mm

Reference
• For both diffuse reflection mounting and specular reflection mounting, the laser emission LED lights
in green when the target is within approximately ±0.15 mm of the reference position, and lights in
orange when it is in any other position within the measurement range.
• Select the mounting mode according to the mounting method (page 3-15).
• The following table shows the measurement ranges for the sampling cycle between 2.55 μs and 10
μs.

LK-H02x

LK-H02xK

Range
setting

Center

Far

Range
setting

Center

Far

2.55 μs

±0.3 mm
(±0.2 mm)

-2.6 to -3.0 mm
(-2.6 to -2.8 mm)

2.55 μs

±0.2 mm
(±0.2 mm)

-2.6 to -2.8 mm
(-2.6 to -2.8 mm)

5 μs

±1.2 mm
(±1.0 mm)

-0.6 to -3.0 mm
(-0.6 to -2.8 mm)

5 μs

±1.0 mm
(±1.0 mm)

-0.6 to -2.8 mm
(-0.6 to -2.8 mm)

10 μs

±2.5 mm
(±2.2 mm)

2.0 to -3.0 mm
(1.8 to -2.8 mm)

10 μs

±2.2 mm
(±2.2 mm)

1.8 to -2.8 mm
(1.8 to -2.8 mm)

The values in parentheses are for specular reflection mounting.

1-12

1 Before Use

LK-H050/LK-H055/LK-H052/LK-H057/LK-H053/LK-H058/LK-H052K/LK-H057K
 Mounting method

M4, 40 mm or more

 Measurement range
• Diffuse reflection mounting

• Specular reflection mounting

46.3 mm

50 mm
Reference
distance

+10 mm

0 mm

Measurement range

Reference
distance

+5.2 mm

0 mm

Measurement range

-5.2 mm

-10 mm

Reference
• For both diffuse reflection mounting and specular reflection mounting, the laser emission LED lights
in green when the target is within approximately ±0.5 mm of the reference position, and lights in
orange when it is in any other position within the measurement range.
• Select the mounting mode according to the mounting type (page 3-15).
• The following table shows the measurement ranges for the sampling cycle between 2.55 μs and 10
μs.

LK-H05x

LK-H05xK

Range
setting

Center

Far

Range
setting

Center

Far

2.55 μs

±0.7 mm
(±0.4 mm)

-7.6 to -10.0 mm
(-7.6 to -9.6 mm)

2.55 μs

±0.4 mm
(±0.4 mm)

-4.4 to -5.2 mm
(-4.4 to -5.2 mm)

5 μs

±2.0 mm
(±1.6 mm)

-4.0 to -10.0 mm
(-4.0 to -9.6 mm)

5 μs

±1.6 mm
(±1.6 mm)

-2.0 to -5.2 mm
(-2.0 to -5.2 mm)

10 μs

±4 mm
(±3.6 mm)

2.0 to -10.0 mm
(1.6 to -9.6 mm)

10 μs

±3.6 mm
(±3.6 mm)

3.2 to -5.2 mm
(3.2 to -5.2 mm)

The values in parentheses are for specular reflection mounting.

1-13

1 Before Use

LK-H080/LK-H085/LK-H082/LK-H087
 Mounting method

M4, 40 mm or more

 Measurement range
• Diffuse reflection mounting

• Specular reflection mounting

80 mm

76.7 mm

Reference
distance

+18 mm

0 mm

Measurement range

-18 mm

Reference
distance

0 mm

+17.6 mm
Measurement range

-17.6 mm

Reference
• For both diffuse reflection mounting and specular reflection mounting, the laser emission LED lights
in green when the target is within approximately ±0.9 mm of the reference position, and lights in
orange when it is in any other position within the measurement range.
• Select the mounting mode according to the mounting type (page 3-15).
• The following table shows the measurement ranges for the sampling cycle between 2.55 μs and 10
μs.

LK-H08x
Range
setting

Center

Far

2.55 μs

±1.2 mm
±(1.1 mm)

-13.5 to -18.0 mm
(-13.3 to -17.6 mm)

5 μs

±3.5 mm
±(3.4 mm)

-7.3 to -18.0 mm
(-7.2 to -17.6 mm)

10 μs

±7.7 mm
(±7.5 mm)

2.9 to -18.0 mm
(2.8 to -17.6 mm)

The values in parentheses are for specular reflection mounting.

1-14

1 Before Use

LK-H150/LK-H155/LK-H152/LK-H157
 Mounting method

M4, 40 mm or more

 Measurement range
• Diffuse reflection mounting

• Specular reflection mounting

150 mm

147.5 mm

Reference
distance

+40 mm
Measurement range

0 mm

-40 mm

Reference
distance

0 mm

+39.5 mm
Measurement range

-39.5 mm

Reference
• For both diffuse reflection mounting and specular reflection mounting, the laser emission LED lights
in green when the target is within approximately ±2 mm of the reference position, and lights in
orange when it is in any other position within the measurement range.
• Select the mounting mode according to the mounting type (page 3-15).
• The following table shows the measurement ranges for the sampling cycle between 2.55 μs and 10
μs.

LK-H15x
Range
setting

Center

Far

2.55 μs

±1.9 mm
±(1.8 mm)

-32.8 to -40.0 mm
(-32.5 to -39.5mm)

5 μs

±7.6 mm
±(7.5 mm)

-16.9 to -40.0 mm
(-16.8 to -39.5 mm)

10 μs

±17.7 mm
(±17.5 mm)

7.2 to -40.0 mm
(7.1 to -17.6 mm)

The values in parentheses are for specular reflection mounting.

1-15

1 Before Use

Mounting the sensor head according to the measurement target
 Measurement distance

Use the sensor head as close to the reference distance as possible. This ensures the most
stable detection.
 Target shape
It is recommended to mount the sensor head in the orientations indicated by the circles in
the figures below.
• Near a wall surface

• Displacement in a hole

• Height difference measurement

(a)

1-16

(b)

1 Before Use

Mounting the controller
Mount the controller to the DIN rail, or secure it with screws.

Caution on the orientation of the controller
Mount the controller only in the orientation shown with a circle in the following figures. Do
not mount it upside down.
LK-

100

POW
ER
STAB
ILITY

DARK

(A)

20 19

(V)

BRIG
HT

18 17

16 15

14 13

HEA

12 11

39 38

10 9

37 36

35 34

33 32

31 30

3 2

28 27

26 25

24 23

22 21

LASE
R ON

LK-

ETHE
RNET

000

COM

D
1

(A)

TIM
IN
G

ZER
O

USB

(A)

RS-

LAS
ER

232

(V)

HEA
D

24V

DISP
LAY
1

HEA
D

00
LK-

HD5

TIM
LO
GO
HI

TIM

OUT

LO
GO
HI

DARK

OUT

D1
HEA
D2
HEA

R ON
LASE ON
R
LASE

PRO

GRA

LITY
STABI
LITY
STABI

T
BRIGH
T
BRIGH

DARK

O
ZER

ENT

SET

ENT
ZER
O
SET

PRO

GRA

LASE
LASE R ON
R ON
STABI
STABI LITY
LITY
BRIGH
BRIGH T
T

HEA
HEA D1
D2

DARK
DARK
TIM
LO
00

LKTIM HD5

GO
HI

OUT

GO
HI

1
TIM
TIM

LK-HD500

ZERO
PROGRAM

SET

GO
HI

LO
GO

HEAD1
HEAD2

HI
GO

OUT2

OUT1

ENT

HI
TIM

DARK
DARK

ZERO

OUT1

OUT2

LASER ON STABILITY BRIGHT
LASER ON STABILITY BRIGHT

PROGRAM

HEAD1
HEAD2

LASER ON STABILITY BRIGHT
LASER ON STABILITY BRIGHT

DARK
DARK

ENT

OUT

SET
LK-HD500

TIM

 To secure the controller with the screws on
the bottom
50 mm
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

LK-G5000

POWER

(V)
1

(A)

STABILITY

0V
ETHERNET

BRIGHT

(V)
DARK

30
mm

2 HEAD
USB
(V)

COM IN

(A)

RS-232C

1 HEAD

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

POWER

(V)
1

(A)

STABILITY

0V
ETHERNET

BRIGHT

(V)
DARK

30
mm

2 HEAD
USB
(V)
(A)
(A)

RS-232C

1 HEAD

HEAD

GO
LASER 1

LASER 1

HEAD

LK-HA100

LASER ON

TIMING 1 ZERO 1

(A)

TIMING 1 ZERO 1

30
mm

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

50 mm

LK-HA100

COM IN

LK-G5000
LASER ON

DISPLAY

DC 24V

DISPLAY

DC 24V

Provide clearance of 50 mm or more above, 30
mm or more on each side, and 30 mm or more at
the rear of the controller for ventilation.
In addition, for ensuring the safety of the cable
connection work, provide 65 mm or more space in
front of the terminal panel of the controller.
 To mount the controller to the DIN rail
Provide clearance of 30 mm or more between the
controllers, 50 mm or more above and 30 mm or
more below the controller.

50 mm
1

(A)

0V
ETHERNET

BRIGHT
DARK

2 HEAD

(V)
COM IN

(A)
(A)

RS-232C

HEAD

30
mm

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

LK-HA100
POWER

LASER ON

(V)
1

(A)

0V
ETHERNET

STABILITY
BRIGHT

(V)
DARK

2 HEAD
USB
(V)
(A)
(A)

30
mm

RS-232C

1 HEAD

HEAD

DISPLAY

DC 24V

DISPLAY

LASER 1

1 HEAD

GO
LASER 1

LK-G5000

STABILITY

(V)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

COM IN

(V)

DC 24V

CAUTION

50 mm

LK-HA100
POWER

LASER ON

USB

TIMING 1 ZERO 1

30
mm

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

TIMING 1 ZERO 1

LK-G5000
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

30 mm

• Do not block the ventilation holes on the top and
bottom of the controller. The heat may stay inside and
cause a malfunction.
• When the temperature inside the control panel exceeds the specified ambient temperature (50C when
one or less head expansion unit is connected, 40C when two or more head expansion units are
connected), decrease the temperature of the controller bottom to the specified ambient temperature or
lower by using forced air cooling or by providing more clearance around the controller.

1-17

1 Before Use

Mounting the LK-G5001V/LK-G5001PV (single unit type controller)
Mount the controller on its bottom surface.

OU
T1
HI
GO
LO

-HD

OU
T2

TIM

500

HI
GO
LO

HEA
D1
HEA
D2

TIM
LASE
R
LASE ON
R ON
PRO
GRA

STAB
ILITY
STAB
ILITY

SE
T

BRIG
HT
BRIG
HT

DAR
K
DAR
K

ZER
O

EN
T

M4 screw x 4
(Screw depth: 6 mm)

Mounting the LK-G5001/LK-G5001P and LK-HD500 (separate type controller)
Display panel (LK-HD500)

Controller (LK-G5001/LK-G5001P)

• DIN-rail mounting
Display
panel

• Bottom mounting

Display
panel
attachment
ring

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

Control
panel
wall

LAS
ER

-G

ETH
ERN
ET

OUT(
V)
OUT(
A)

OUT
2

0V
OUT(
V)
OUT(
A)

TIMING 1 ZERO 1

COM IN

OUT

USB
2
HE
AD

RS
-23

DC 24V

LASER 1

Two cutouts

Insert the display panel
from the front, and secure
it with the display panel
attachment ring from the
rear.

When removing the display
panel, push the two cutouts
of the attachment ring
outward with a flat-blade
screwdriver and then push
out the display panel to the
front.

1-18

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

M4 screw x 4
(Screw depth:
6 mm)

DIS
PLA
Y

1
HE
AD

1 Before Use

Separating the single unit type controller

Disconnect the display panel cable from the display panel connector on the
terminal panel of the controller.
Also remove the display panel cable from the guide on the bottom of the controller.

Loosen the display panel fixing screw.

T1
HI
GO
LO

-H
D5
TIM 00

T2
HI

Display panel
fixing screw

GO
LO

HEAD
HEAD1
2

TIM
LAS
ER
LAS ON
ER
ON
PR
OG
RA
M

STA
BIL
STA ITY
BIL
ITY

BRIGH
T
BRIGH
T

DARK
DARK

EN
T

Reference
The display panel fixing screw stays on and does not detach from the display panel housing.

Remove the display panel housing from the controller.
(1)

T1
HI
GO
LO

-H
D5
TIM 00

T2
HI
GO
LO

HEAD
HEAD1
2

TIM
LAS
ER
LAS ON
ER
ON
PR
OG
RA
M

STA
BIL
STA ITY
BIL
ITY

BRIGH
T
BRIGH
T

DARK
DARK

ZE
RO

EN
T

(2)

Remove the display panel housing
by pulling it in the directions of the
arrows in the specified order.

1-19

1 Before Use

Push (1) and (2) outward in this order with a flat-blade screwdriver, and then
push the display panel to the front to remove the display panel attachment
ring.
Display panel
attachment ring

(1)

Display panel
attachment ring

(3)

(2)

1-20

Remove the display panel from the display panel housing.

1 Before Use

Combining the separate type controller

Attach the display panel to the display panel housing by aligning the two
protrusions on the housing with the display panel.

Display panel

Two protrusions

Display panel housing
(OP-84426, optional)

Secure the display panel with the display panel attachment ring, and connect
the 33 cm display panel cable (OP-84427, optional).

Display panel
attachment ring

Two cutouts

Secure the cable by fitting it
along the guide.

Align the claw of the display panel housing with the controller.

Claw

Controller

Display panel housing

1-21

1 Before Use

Attach the display panel housing by sliding it along the groove on the
controller.

1
OU

T1
HI
GO
LO

LK
-H
D5
TIM 00

T2
HI
GO
LO

HEAD
HEAD1
2

TIM
LAS
ER
LAS ON
ER
ON
PR
OG
RA

STA
BIL
STA ITY
BIL
ITY

BRIGH
T
BRIGH
T

DARK
DARK

EN
T

Slide the front panel in the direction of the arrow.

CAUTION
Be sure to check the orientation of the claw on the connector before attaching the display panel
housing. Using the incorrect orientation may break the claw, causing a malfunction.

5
6

1-22

Secure the display panel housing by tightening the display panel fixing screw.
Route the display panel cable along the guide, and connect it to the display
panel connector on the terminal panel of the controller.

1 Before Use

Connecting the head expansion unit
CAUTION
Turn off the power of the LK-G5000 Series before connecting the head expansion unit. Otherwise, you
may suffer a shock or damage the unit.

Connect the head expansion unit by aligning its connector to the connector on
the left side of the controller.
You need to remove the sticker attached to the left side of the controller beforehand.

Connector
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

R ON

-G

HE
RN

OU
T(V)
OU
T(A
)
OU
T 0V
OU
T(V)
OU
T(A
)
OU
T 0V

COM IN

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

2
HE

TIMING 1 ZERO 1

-232

LASER 1

-H
A1

DC 24V

DIS
PL
AY

PO
WE

ST
AB

ILI

IGH

(V)
(A)
(A)

Secure the head expansion unit by tightening the two fixing screws.
Screw position

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

R ON

-G

HE
RN

TIMING 1 ZERO 1

00
LK

OU
T(V)
OU
T(A
)
OU
T 0V
OU
T(V)
OU
T(A
)
OU
T 0V

-H
A1

PO
WE

ST
AB

ILI

IGH

2
HE

-232
C

LASER 1

COM IN

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

DC 24V

(V)
(A)

DIS
PL
AY

(A)

Screw position

Tightening torque
Limit the tightening torque to 0.7 Nm or less.

1-23

1 Before Use

In the Environment settings, specify the active head count and active OUT
count.
Refer to "Setting the Operating Environment settings (ENV)" (page 3-69) for details.

NOTE
When you change the active head count or active OUT count in the Environment settings, all
the settings of the LK-G5000 Series except for the Environment settings are reset. When you
connect the LK-HA100 head expansion unit(s) and add a sensor head(s), be sure to set the
active head count and active OUT count before changing the other measurement settings.

1-24

1 Before Use

Connecting the communication unit
Connect the LK-CC100 CC-Link communication unit or the LK-DN100 DeviceNet
communication unit to the controller.

CAUTION
Turn off the power of the LK-G5000 Series before connecting the communication unit. Otherwise, you
may suffer a shock or damage the unit.

Connect the communication unit by aligning its connector to the connector on
the right side of the controller.
You need to remove the sticker attached to the right side of the connector
beforehand.

Connector
-G

(V)
(A)
R ON
SE
LA

0V
1

(V)
(A)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

0V
2
ET
RN

1
HE

2 HE

COM IN

TIMING 1 ZERO 1

-D

-C

L RU

MS
NS

-23

PL
DIS

1 HE

LASER 1

DC 24V

TE
B RA

STATION No.

L ER

TE
B RA

DE
MO
V+
CAN
)
(FG
D

DG
DB
DA

CAN

V-

(FG

)

Secure the communication unit by tightening the two fixing screws.
Screw position

-G

(V)
(A)
R ON
SE
LA

0V
1

(V)
(A)

-D

MS
NS

-C

SD
10
RD
R

L ER

STATION No.

L RU

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

0V
2
1

ET
RN
HE
ET

2 HE

V+
CAN

ELD
SHI
DE
MO

)
(FG
D

DG
DB
DA

LK-CC100
or
LK-DN100

CAN

V-

-23

PL
DIS

1 HE

TIMING 1 ZERO 1

TE
B RA

LASER 1

COM IN

TE
B RA

DC 24V

STATION No.

ELD
SHI

LK-CC100
or
LK-DN100

)
(FG

Screw position

Tightening torque
Limit the tightening torque to 0.7 Nm or less.

1-25

1 Before Use

Connecting the units
CAUTION

• Be sure to turn off the power of the controller before connecting/disconnecting the cables. Failure to
do so may cause product breakdown.
• Check the orientation of the connector before connecting it. Improper connection may break the
connector pins, resulting in product breakdown.
• Part of the input/output circuit of the LK-G5000 Series is internally common. Be careful that no
potential difference is generated between the internally common terminals due to the potential
difference between the cables/external devices.
Refer to "Precautions on wiring" (page 7) for details.
0

-HD

TIM
LO
GO
HI

TIM

LO
GO
HI

Display panel cable
(0.33 m/3 m/10 m)

1
HEAD2
HEAD

ON
ER
LAS ON
ER
LAS
M
RA
OG
PR

TY
BILI
STA TY
BILI
STA

GHT
BRI
GHT
BRI

K
DAR
K
DAR

Display panel
(When the separate type controller is used)

T
EN

T
SE

Head-to-controller
extension cable (5 m/10 m)

-H

ER
POW
ITY

BIL

STA

(V)
(A)

IGH
BR

K
DAR

0V
(V)
(A)
0V
1
(V)
(A)
(A)

AD
HE

Head-to-controller cable
(0.7 m/2 m/5 m/10 m/20 m/30 m)
24 VDC power supply

Head 02
Head 01

Connecting the sensor head
Connect the connector of the head-to-controller cable to the head connector 1 or 2 on the
terminal panel of the controller. Ensure that a clicking sound is heard which indicates a
secure connection. When disconnecting the cable, pull out the connector while holding
down the buttons on both sides. Up to two sensor heads can be connected to the
controller at the same time.
Reference
When the LK-HA100 head expansion units are used, up to 12 sensor heads can be connected.

1-26

1 Before Use

Connecting the display panel
When using the separate type controller, connect the display panel cable between the
display panel connector of the controller and the display panel.
Reference
The LK-G5000 Series can also be operated without the display panel. Moreover, you can use the LKNavigator 2 software to operate the LK-G5000 Series from a PC or to display the measured value on a
PC.

Connecting the power supply
Connect the 24 VDC power supply to terminals 1 and 2 of the 12-pin terminal block.

CAUTION
Reference
Be sure to observe the following instructions. Otherwise, a connection failure may occur, causing a
malfunction in the LK-G5000.
• For the power supply cable, use lead wires with a nominal cross-section area of 0.8 mm2 to 1.3 mm2
(AWG17 to 18).
• The unsheathed wire length should be approx. 9 mm.
• Do not use soldering (preliminary soldering) to connect the wires.
• Insert the wires into the innermost position of the terminal block securely.
• Connect the wires to the terminal block directly, without using a crimp terminal, etc.

Reference
The CA-U3 or MS2 Series manufactured by KEYENCE is recommended for the 24 VDC power supply
unit.

Connection to the terminal block
The procedure to connect electrical wires to the terminal block are as follows:

Remove the terminal block from the controller.

Use a screwdriver to push in part (a) and insert a
lead wire into part (b) as indicated.

Remove the screwdriver once the wire is fully
inserted.

Loosen the two screws with a screwdriver and pull out
the terminal block.

Pull each lead wire gently to confirm that it is properly
secured.

(b)

(a)

1-27

1 Before Use

4
1

1-28

Attach the terminal block to the controller.

1 Before Use

Outline of the Measurement and Settings
Mode selection
In addition to the measuring mode to perform measurement, the LK-G5000 Series has
three other modes: the program switching mode to switch programs; the tolerance setting
mode to set tolerances; and the setting mode to specify various functions.

Tolerance setting mode

Setting mode
Set the various functions
including the sensor
head functions and
measurement
processing.
See "Function Settings"
(page 3-1) for details.

Set the upper limit,
lower limit, or
hysteresis for the
tolerance setting.

LK-HD500
HI

TIM

Press the SET key.

Press the PROGRAM key.

Press the SET key for 1 second.

HEAD1
HEAD2

LASER ON

STABILITY

BRIGHT

LASER ON

STABILITY

BRIGHT

PROGRAM

SET

DARK
DARK

Press the ENT key.

ZERO

ENT

Program switching mode

To display setting mode (page 2-3)

Call up the program
and change
parameters when
necessary.
See "Program
Function" (page 2-10)
for details.

1-29

1 Before Use

Setting mode
In the Setting mode, every time the
key is pressed, the setting category is switched in
the order of Head Settings -> OUT Settings -> Common Settings -> Environment Settings.

PROG. 0 to 7
OUT settings

Head settings

key

Environment settings

Common settings

key

PROG.
0 to 7

The LK-G5000 Series allows switching of eight programs assigned to
Program Nos. 0 to 7. You can register a set of parameters as a program
for a specific measurement process or target. When necessary, you can
call up one of the programs and change the setting easily.

Head settings
(page 3-3)

• Set the functions related to sensing ability to ensure stable detection.
• Setting items:
ABLE, measurement mode, alarm handling, ABLE calibration,
mounting mode, mask setting, median, LASER CTRL group, range,
base point

OUT settings
(page 3-24)

• Set the functions related to data processing.
• Setting items:
Calculation method, scaling, filter, measurement mode, trigger, offset,
minimum display unit, analog scaling, measurement type

Common
settings
(page 3-55)

• Set the functions common to the Head settings and OUT settings.
• Setting items:
Sampling cycle, mutual interference prevention, synchronization,
comparator output form, strobe time, data storage, analog output,
alarm output type

Environment
settings
(page 3-69)

• Set the operating environment of the devices.
• Setting items:
RS-232C, setting selection, program, panel lock, active OUT count,
active head count, active analog channel count, LAN setting

1-30

1 Before Use

Initializing the LK-G5000 Series to the
Factory Default Settings
You can initialize all the specified settings for the LK-G5000 Series back to the default
status when the unit was shipped from the factory.

Hold down the ENT key and turn on the power.

When "

The measured value display shows "

" (INIT).

" (OK) flashes in the lower window, press the ENT key again.

The settings of the LK-G5000 Series are initialized to the factory default settings and
the system enters the measuring status.
Refer to "Function Settings" (page 3-1) for details.

1-31

1 Before Use
MEMO

1-32

Operations during Measurement
and Their Functions
2

This chapter describes the operations that can be performed
during displacement measurement and their functions.

Switching the Measurement Value Displays......................... 2-2
Setting the Tolerance Comparator Value .............................. 2-4
Instantaneous Zero Setting (Auto-Zero) ............................... 2-7
Instantaneous Master Adjustment (Auto-offset) ................... 2-9
Program Function ............................................................... 2-10
Switching Program Nos. ..................................................... 2-11
Storing Measured Values in the Memory (Data Storage
Function)............................................................................. 2-12

2-1

2 Operations during Measurement and Their Functions

Switching the Measurement Value Displays
This section describes how to switch the measurement value displays.

Switching between the upper window display and lower window display

During measurement, you can switch the following three display types by pressing the
key.
• Upper window single display
• Lower window single display
• Dual display
Dual display (default setting)

key

Upper window single display
Reference
The selected display type is retained for each program No.

2-2

Lower window single display

2 Operations during Measurement and Their Functions

Assigning a desired OUT display to the upper/lower window (display setting)

Press the ENT key.

Press the
key to select the OUT No. to display in the
upper window and then press the ENT key.

The system enters the display setting mode.

out_01
disp1

Press the
key to select the OUT No. to display in the
lower window and then press the ENT key.
The display assignment is set.

out_01
disp2

2-3

2 Operations during Measurement and Their Functions

Setting the Tolerance Comparator Value
This section describes how to read the tolerance comparator display and how to set it.

The function of the tolerance comparator setting

You can set limit values (tolerance comparator values) used to decide whether the
measured value is within the allowable range. The measured values are classified into
three levels based on the limit: HI when the value exceeds the upper limit, LO when the
value is below the lower limit, and GO when the value is within the allowable range. The
result can be displayed or output.
Comparator status

Range

Display

HIGH

HI comparator value <
Measured value

The "HI" LED lights and the measured value is
displayed in red.

LO comparator value  Measured
value  HI comparator value

The "GO" LED lights and the measured value is
displayed in green.

LOW

Measured value < LO
comparator value

The "LO" LED lights and the measured value is
displayed in red.

Comparator standby

No LED lights and the measured value display shows
"_______".

Alarm

The "HI" and "LO" LEDs light simultaneously and the
measured value display shows "_ffffff".

When the comparator output form (page 3-63) is set to "Normal", the comparator output is
as follows.
Displayed value

HI comparator
value
LO comparator
value
t

HI output
GO output
LO output

ON
OFF
ON
OFF
ON
OFF

Reference
• Refer to "Setting the output form of the tolerance comparator result (Comparator output form)" (page
3-63) for details of the comparator output form.
• The tolerance comparator result is output from the 12-pin terminal block and expansion connector
on the terminal panel of the controller. Refer to "Function of the I/O terminals" (page 4-2) for details
of the external output terminals.

NOTE
Measurement stops during the setting.

2-4

2 Operations during Measurement and Their Functions

Setting the tolerance comparator value

Press the SET key.

Press the
key to select the OUT No. to set the
tolerance comparator value and then press the ENT key.

The system enters the tolerance setting mode.

out_01
limit

Use the
and
keys to set the HI comparator value
and then press the ENT key.
In this example, the HI tolerance for OUT01 is set to 4.0000.

04.0000
01_hi

Use the
and
keys to set the LO comparator value
and then press the ENT key.
In this example, the LO tolerance for OUT01 is set to -4.0000.
The specified tolerance comparator values are set.

_04.0000
01_lo

Press the SET key.
The system returns to the measuring status.

 Entering numerical values
A numerical value can be set by the following key operations.
• You can set the digit of a flashing number.
• When all digits are flashing, you can set the sign.
• When the
key is pressed, the digit that flashes after
all the digits flash shifts to the right. When the key is
pressed for one second or more, digits shift
continuously.

• When the
key is pressed, the value increments one
at a time.
When the key is pressed and held for one second or
more, the value increments continuously.

All digits
flash.

key

Reference
When the ZERO key is pressed and held for three seconds during
the setting, the setting returns to the default value.

2-5

2 Operations during Measurement and Their Functions

Hysteresis

If the measurement value is fluctuating around the tolerance comparator value, the
comparator output may repeatedly turn on and off. By setting a hysteresis, an allowance
can be made between the detected value and the return value of the tolerance
comparator, preventing such a phenomenon. The diagram below shows the comparator
output when the comparator output form is set to Normal. Hysteresis is disabled by
default.
Displayed value

HI comparator
value
LO comparator
value

GO output

ON
OFF
ON
OFF

LO output

ON
OFF

HI output

Detection

Recovery

Hysteresis

NOTE
Measurement stops during the setting.

Reference
Refer to "Setting the output form of the tolerance comparator result (Comparator output form)" (page 363) for details of the comparator output form.

Setting the hysteresis

1
2

Press the SET key.
The system enters the tolerance setting mode.
Press the
key to select the OUT No. to set the
hysteresis and then press the ENT key.

out_01
limit

3
4

Press the ENT key several times until "[Target OUT No.]
" is displayed in the lower window.
Use the
and
press the ENT key.

keys to set the hysteresis and then

The specified hysteresis is set.

5
2-6

Press the SET key.
The system returns to the measuring status.

000.000
01_hys

2 Operations during Measurement and Their Functions

Instantaneous Zero Setting (Auto-Zero)
This section describes the auto-zero function which is used for reference zero point
compensation.

The auto-zero function can be used to set a reference point at "0", for example, when the
target is changed. You can instantaneously reset the currently displayed value to "0" by
pressing the [ZERO] key or other operation. An increase or decrease in the displayed
value relative to the zero point (reference point) can be displayed with the "+" or "-".
Displayed value

Auto-zero performed

t
NOTE
The auto-zero cannot be set during the comparator standby status ("++++++" is displayed), over
range status, or alarm status. (Canceling auto-zero is possible.)

Reference
• The auto-zero value is stored for each program No. and OUT No.
• The auto-zero value is retained even if the power is turned off.
• When the measurement mode is other than Normal, the system enters the comparator standby
status ("------") after auto-zero is set.
• Master target adjustment using the offset function (auto-offset function)
When the offset value has been set to the size of a master target, setting the auto-zero while the
master target is being measured will set the displayed value to the size of the master target (offset
value) (page 3-47).
• The auto-zero is applied to the measured value after it is processed with the measurement mode
operation (page 3-37).

2-7

2 Operations during Measurement and Their Functions

Setting the auto-zero from the display panel

1
2

Measure the target to be used as a reference.
In this example, assume that "

" is displayed.

1.2345

Press the ZERO key.
The measured value display shows zero.

0.0000

NOTE
• To specify the auto-zero setting for either the upper or lower window only, use the up and down
arrows to show only that display.
• To specify the same auto-zero setting for both the upper and lower windows, set the measured
value display mode to the dual display. Refer to "Switching the Measurement Value Displays" (page
2-2) for the procedure for switching the measured value display.
• The auto-zero cannot be set to the OUT No. which is not being displayed.
• The measured value at the moment when the ZERO key is released is set to "0.0000".
• Pressing the ZERO key for three seconds cancels the auto-zero setting.

Auto-zero input from the ZERO terminal
When ZERO1 (Terminal 10) and COM for input (Terminal 12) of the 12-pin terminal block
are turned ON, the auto-zero is set for all of the synchronized OUT.
When ZERO (Terminal 8) and COM for input (Terminal 1) of the expansion connector are
turned ON while DEC_IN (Terminal 16) and COM for input (Terminal 12) of the expansion
connector are turned ON, the auto-zero is set for the OUT selected with the B_IN terminal.
Limit the turn-on time for the terminals to less than two seconds.
• NPN type : OFF when opened/ON when short-circuited
• PNP type
: OFF when opened/ON when voltage is applied
Reference
• When the synchronization is not set, the auto-zero is set to OUT01 when the ZERO1 terminal is
turned ON.
• The measurement value at the instant when the terminal is turned on is set to "0.0000".
• If the ZERO1 or ZERO2 terminal is turned on for two seconds or more, the auto-zero is canceled.

Auto-zero input using the RS-232C interface
The auto-zero function can be set or canceled with the command sent from the external
devices through the RS-232C interface ("RS-232C" (page 5-1)).

2-8

2 Operations during Measurement and Their Functions

Instantaneous Master Adjustment
(Auto-offset)
The auto-offset function can be used for master adjustment, when the target is changed.

Set the size of the master target as the offset value and then use the auto-zero function
while measuring the master target. The size of the master target can be set as the master
value (reference value).
Refer to "Auto-Zero" (page 2-7).
Refer to "Offset" (page 3-47).
 Example
To adjust the master target dimension at "10.000", perform the auto-zero function after
setting an offset value of "10.000".
Displayed value

Auto-zero performed

10.000
(Reference value)

2-9

2 Operations during Measurement and Their Functions

Program Function
The LK-G5000 Series allows switching of eight programs assigned to Program Nos. 0 to 7.
You can register a set of parameters as a program for a specific measurement target.
When necessary, you can call up one of the programs and change the setting easily.
Program No.

2
Head settings

PRG0

PRG1

PRG2

OUT settings

PRG3

PRG4

PRG5

Common settings

PRG6

PRG7

NOTE
The Environment settings are common to all programs. These settings cannot be switched for each
program.

2-10

2 Operations during Measurement and Their Functions

Switching Program Nos.
This section describes the Program No. switch function used to easily change the
operation settings.

Using the display panel

Press the PROGRAM key.

Press the
key to select the desired program number
and then press the ENT key.

The program selection screen appears.

prg_0
panel

The program is switched and the system returns to the
measuring status.

Using the external input terminal
The program number can be changed using the P1, P2, and P3 terminals of the
expansion connector (page 4-5).

Using the RS-232C interface
The program numbers can be switched with the command sent from the external devices
through the RS-232C interface (page 5-11).
NOTE
The method for switching the program numbers varies depending on the setting of "Setting the
program switching method (Setting selection)" (page 3-73) in the Environment settings.

Function No.

Selection item

Possible operation
Panel operation/RS-232C interface
External terminal input

Reference
It is also possible to switch program numbers by using the LK-HD1001 dedicated touch panel or the
LK-Navigator 2 setup support software.

2-11

2 Operations during Measurement and Their Functions

Storing Measured Values in the Memory
(Data Storage Function)
This function stores measured values of an arbitrary OUT No. in the controller's internal
memory.

The LK-G5000 series can store data for up to a total of 1,200,000 measured data points in
the internal memory, at each synchronous input, or in a storage cycle.
For the storage timing, "Synchronized with sampling cycle" or "Synchronized with
synchronous input" can be selected.
To start and stop data storage, and to read data, use the RS-232C interface or the LKNavigator2. (Refer to LK-Navigator2 User's Manual.)
 When storage cycle is "x1"
Starting/stopping
data storage

1.
Start

Sampling cycle

4.
Stop

Storage timing

3.
Storing data into
internal memory

1. The LK-G5000 starts storing data according to "Conditions to start storing data".
2. The measured value to be stored is determined in each "sampling cycle".
3. The measurement result is stored in the internal memory.
4. The LK-G5000 stops storing data according to "Conditions to stop storing data".
5. While the data storage function is stopped, measured values will not be stored.

2-12

2 Operations during Measurement and Their Functions
 When storage cycle is "Synchronization input"
Starting/stopping
data storage

Synchronous
input

1.
Start

4.
Stop

Storing data into
internal memory

1. The LK-G5000 starts storing data according to "Conditions to start storing data".
2. The measured value to be stored is determined according to "synchronous input".
TIMING1 input, RS-232C interface input and LK-HD1000 timing buttons are
available for "synchronous input".
3. The measurement result is stored in the internal memory.
4. The LK-G5000 stops storing data according to "Conditions to stop storing data".
5. While the data storage function is stopped, measured values will not be stored.

Storage timing
Storage timing is specified with "Storage cycle".
For details on storage cycle, refer to "Storage cycle selection" (page 3-65).
Storage cycle

Storage timing

Stores all measurement data.

x2 to x1000

Samples measurement data, and stores sample data in the sampling cycle
that are a multiple of the specified number.

Synchronization input

Stores data determined at each synchronous input.

Starting/stopping data storage and clearing data
Conditions to start storing data

• Start command from the RS-232C interface
• Operation from the LK-Navigator 2 setup support software

Conditions to stop storing data

• Stop command from the RS-232C interface
• Operation from the LK-Navigator 2 setup support software

Any of the following cases while the storing operation is stopped:
• When the data for the specified number of measured values are stored
• When the setting mode or communication mode is changed to the
measuring mode
Conditions to clear the stored
• When the initialization command is sent through the RS-232C interface
data
• When the initialization is ordered from the LK-Navigator 2 setup support
software
• When the power is turned off
• When the program number is changed

2-13

2 Operations during Measurement and Their Functions

Reading data
Data stored on the controller's internal memory can be read by the following method:
• Reading data via LK-Navigator2 (LK-Navigator2 User's Manual)
• Reading data with the read command via the RS-232C interface (page 5-12)

2-14

Function Settings

This chapter describes the functions of the LK-G5000 Series and
how to set them.

Measurement, Data Flow and Functions.............................. 3-2
Setting the sensor head (HEAD) .......................................... 3-3
Setting the measurement value output conditions (OUT)... 3-24
Setting the Common Function (OPTION)........................... 3-55
Setting the Operating Environment settings (ENV) ............ 3-69

3-1

3 Function Settings

Measurement, Data Flow and Functions
The LK-G5000 Series can be connected with two sensor heads (12 heads max. when the
expansion units are used). You can perform measurement using the individual sensor
head or calculate the measurement values between the sensor heads.
Flow of head 12 data

Flow of head 02 data

Sampling

Flow of head 01 data

Sampling

Median

Measured value of
head 12

Measured value of
head 02

Measured value of
head 01

Alarm handling

…

3
OUT calculation

Flow of
OUT12 data

Flow of
OUT01 data

Flow of
OUT02 data

Filtering

Scaling

Measurement mode

Auto-zero

Offset

Tolerance
comparator

Measured value of
OUT12

Measured value of
OUT02

Measured value of
OUT01

Auto-zero

…

Measured values of OUT01 through 12 can be used up to three times in the calculation.

The functions of the LK-G5000 Series can be categorized into the following four groups.
Head settings (page 3-3)

Set the functions related to sensing ability to ensure stable detection.

OUT settings (page 3-24)

Set the functions related to data processing.

Common settings (page 3-55)

Set the functions common to the Head settings and OUT settings.

Environment settings (page 3-69)

Set the operating environment of the devices.

Function symbol and function display
Function
symbol
display

3-2

Function
display

3 Function Settings

Setting the sensor head (HEAD)
This section describes the settings related to sensing ability to ensure stable detection.
NOTE
When you change the active head count or active OUT count in the Environment settings, all the
settings of the LK-G5000 Series are reset. When you connect the LK-HA100 head expansion unit(s)
and add a sensor head(s), be sure to specify the active head count and active OUT count before
changing the other measurement settings.

List of functions and function Nos.
Function
symbol

Function

Function No.

Function display
ABLE

0
AUTO

Reference
page

MANUAL
page 3-6

Measurement
mode

Alarm handling

ABLE
calibration

Normal

Translucent Transparent Transparent Semi
object
object 2
opaque
object

• Process count (
, 0 to 9999, initial value: 8)
• Recovery count (
, 0 to 9999, initial value: 0)
• Level (
, 0 to 9, initial value:4)

page 3-8

page 3-10

START/STOP
page 3-13

/
Mounting mode

Mask setting

Diffuse
reflection

Specular
reflection

OFF

page 3-15

page 3-16
Median

OFF

31
page 3-18

LASER CTRL
group

LASER
CTRL1

LASER
CTRL2

Range

CENTER

FAR

page 3-20

page 3-21
Base point

NEAR

FAR
page 3-22

* The shaded cells (

) are set by default.

3-3

3 Function Settings

List of initial values and setting ranges
Function symbol

Item
ABLE

Upper limit of control

3-4

Setting range
-

1 to 99

Initial value

Remark

AUTO

Values smaller
than the lower
limit of control
cannot be
selected.

Values larger
than the upper
limit of control
cannot be
selected.

Lower limit of control

1 to 99

Measurement mode

Normal/Translucent object/
Transparent object/
Normal
Transparent object 2/
Semi opaque

Process count

0 to 9999

Recovery count

0 to 9999

0
4

Level

0 to 9

ABLE calibration

START/STOP

Mounting mode

Diffuse reflection/Specular
reflection

Diffuse
reflection

Mask setting

OFF/ON

OFF

P-1

-9999.99 to 9999.99

0000.00

P-2

-9999.99 to 9999.99

0000.00

Median

OFF/7/15/31

OFF

LASER CTRL group

LASER CTRL1/LASER
CTRL2

LASER
CTRL1

Range

CENTER/FAR

CENTER

Base point

NEAR/FAR

NEAR

3 Function Settings

List of the Head settings screens
HEAD

HEAD 01

ABLE

HEAD 02

Measurement mode

Alarm handling

HEAD 12

ABLE calibration

Mounting mode

Mask

Median

LASER CTRL
group

Range

Base point

3-5

3 Function Settings

Setting ABLE (ABLE)
The LK-G5000 Series measures the displacement of a target by measuring the laser beam
reflected from the surface of the target. The ABLE function automatically adjusts the light
intensity and sensitivity to their optimum levels according to the conditions of the target
surface (color, luster, and material).
The following two types of settings are available for ABLE.

Function No.

Light intensity
adjustment

Function

Auto

The light intensity is automatically adjusted to the optimum level. Select
this option during normal operation.

Manual

The light intensity and sensitivity can be adjusted by limiting the
adjustment range for the light intensity and sensitivity to the desired
range between 1 and 99.
Select this option when the reflectance of the target changes greatly in
a short cycle.

Setting ABLE (AUTO)
The following procedure changes the setting of head 01 as an example.

1
2

Hold down the SET key.

Press the
key to select the target sensor head (
and then press the ENT key.

Press the
key to select function symbol A (ABLE,
and then press the ENT key.

Press the
the ENT key.

Press the
key to select the Head setting (
press the ENT key.

) and then

head
)

head01
head01
)

abcdef
able

key to select A-0 (AUTO,

The setting is saved.

6
3-6

Press the SET key.
The system returns to the measuring status.

) and then press

a_0
auto

3 Function Settings

Setting ABLE (MANUAL)
The following procedure changes the setting of head 01 as an example.

1
2

Press the
key to select the Head settings (
press the ENT key.

Press the
(HEAD01,

Hold down the SET key.
) and then

head

3
key to select the target sensor head
) and then press the ENT key.

head01
head01

Press the
key to select function symbol A (ABLE, )
and then press the ENT key.

abcdef
able

Press the
key to select A-1 (MANUAL,
press the ENT key.

) and then

a_1
manual

Use the
and
press the ENT key.

keys to set the HI value and then

In this example, "60" is set.

60
hi

Use the
and
press the ENT key.

keys to set the LO value and then

In this example, "20" is set.
The setting is saved.

Press the SET key.

20
lo

The system returns to the measuring status.

3-7

3 Function Settings

Setting the measurement mode according to the target (Measurement mode)
This function is used to ensure more stable detection by specifying the type of
measurement target.
Function No.

Target

Description

Normal

Select this option during normal operation.

Translucent object

Use this option for a target that absorbs light such as a
translucent plastic.

Transparent object

Use this option to measure the displacement or thickness of a
transparent object.
This option is intended for the case where the reflectance
values of the multiple surfaces of the transparent object are
the same.

Use this option when the reflectance values of the multiple
Transparent object 2 surfaces of the transparent object, such as the front side and
back side, are different (four surfaces maximum).
Semi opaque

Use this option for a plastic target with a high gloss surface.

NOTE
• When "Transparent object 2" is selected, the sampling cycle is quadrupled at maximum in order to
obtain optimum control over the detection of up to four surfaces.
• Using the "Transparent object 2" setting requires the K type sensor head.
• The relationship between the measurement mode of the sensor head, the sampling cycle, and the
active OUT count is shown in the table below.
Measurement mode (page 3-8)
Semi
opaque

Sampling cycle (page 3-58)

Normal/
Transparent Transparent
Translucent
object
object 2
object

2.55 µs

5 µs

10 µs

20 to 100 200 µs or
µs
longer





- (-)

12 (12)





- (-)

8 (-)

12 (12)





- (-)

4 (-)

8 (-)

12 (12)



2 (-)

4 (-)

8 (-)

12 (12)

 : When at least one sensor head set to the corresponding measurement mode is connected
 : A sensor head set to the corresponding measurement mode can be connected

x : When a sensor head set to the corresponding measurement mode is not used
- : Setting impossible
The values in parentheses are the number of OUT which can be used for the calculation of ADD, SUB,
P-P, MAX, MIN, and AVE among OUT.

3-8

3 Function Settings

Setting the measurement mode
The following procedure changes the setting of head 01 as an example.

1
2

Hold down the SET key.

Press the
key to select the target sensor head (HEAD01,
) and then press the ENT key.

Press the
key to select the Head settings (
press the ENT key.

) and then

head

3
head01
head01

Press the
key to select function symbol B
(Measurement mode, ) and then press the ENT key.

abcdef
meas

Press the
key to select B-2 (Transparent object,
and then press the ENT key.
The setting is saved.

Press the SET key.

)

b_2
tran_1

The system returns to the measuring status.

3-9

3 Function Settings

Specifying the action when measurement becomes impossible (Alarm handling)
Measurement becomes impossible when the result is out of the measurement range or
when the received light intensity is excessive/insufficient. The alarm handling function is
used to specify how to process data in these situations.
Setting

Function

Specifies the number of sampling times for which the last normal value is held after
measurement becomes impossible.
• Setting range: 0 to 9999
• If measurement is still impossible after the number of sampling times exceeds this value,
the measured value is
Process count displayed as "-FFFFFF".
• Holding is released when the system recovers to the measuring status within the specified
process count.
• When the process count is set to "9999", the normal value is continuously held until
measurement becomes possible.
• If the alarm occurs immediately after the power is turned on and there is no measured
value, "-------" is held.
Recovery
count

Level

3-10

After measurement becomes impossible and an alarm is issued (-FFFFFF is displayed), if the
number of valid measured values reaches the specified recovery count, the system recovers
from the alarm.
• Setting range: 0 to 9999
• If another alarm is issued before the number of valid measured values reaches the
specified recovery count, the count is reset.
Sets the threshold level of the received light status below which a peak is judged as invalid.
• Setting range: 0 to 9
• "0" is the least sensitive to the alarm and "9" is the most sensitive.

3 Function Settings

Process count and recovery count
 Process count

Measurement value with
“Process Count” disabled.
(count set to 0)
-FFFFFF

Measurement value with
“Process Count” enabled.

This setting can cancel the status when the measurement becomes impossible
temporarily due to holes or other causes.
Reference

This setting does not hold the statuses of the sensor head status indicator on the display
panel and the laser emission LED on the sensor head.
 Recovery count

Measurement value with
“Recovery Count”
disabled. (count set to 0)
-FFFFF

Measurement value
with “Recovery Count”
enabled.
-FFFFF

This setting can cancel irregular values resulting from stray light or other causes.

3-11

3 Function Settings

Setting the alarm handling
The following procedure changes the setting of head 01 as an example.

1
2

Hold down the SET key.

Press the
key to select the target sensor head (HEAD01,
) and then press the ENT key.

Press the
key to select the Head settings (
press the ENT key.

) and then

head

head01
head01

Press the
key to select function symbol C (Alarm
handling, ) and then press the ENT key.

abcdef
alarm

Use the
and
keys to specify the number of
sampling times to hold the last normal value (
) and
then press the ENT key.
In this example, "500" is set.

Use the
and
keys to specify the number of
sampling times to count the valid values to recover
(
) and then press the ENT key.
In this example, "500" is set.

Press the
key to specify the level of light-receiving
status to determine that the measurement is impossible
(
) and then press the ENT key.
In this example, "8" is set.
The setting is saved.

8
3-12

Press the SET key.
The system returns to the measuring status.

0500
count1
0500
count2
8
level

3 Function Settings

Automatically adjusting the ABLE adjustment range according to the target (ABLE calibration)
The ABLE calibration function optimizes the adjustment range for ABLE based on the
actual measurement of the target. This function is useful when the reflectance of the target
changes greatly in a short cycle.
NOTE
• The ABLE calibration must be conducted after the completion of the OUT settings and Common
settings.
• Note that the ABLE calibration fails in the following cases:

- The target sensor head for the ABLE calibration is not assigned to any OUT.
- The target sensor head for the ABLE calibration is set to "AB-ON" but assigned to
group "C" in the mutual interference prevention setting.
- The input to the REMOTE terminal or LASER CTRL1/LASER CTRL2 terminal for the
target sensor head for the ABLE calibration is turned off.

Operation flow of the ABLE calibration

Measure an actual target as shown in the figure.

2
3
4

Start the ABLE calibration (page 3-14).
The data collection starts.
Move the target slowly.
Stop the ABLE calibration.
The data collection finishes and the optimum range for ABLE is set.

Reference
• When the ABLE calibration is performed, the ABLE setting for function symbol A (page 3-6) is set to
MANUAL, and the upper and lower limits of control are set to the adjusted values.
• By slowly moving the target, you can optimize the adjustment range for ABLE. Such optimization of
the adjustment range improves the response when the reflectance of the target changes greatly in a
short cycle.

3-13

3 Function Settings

Performing the ABLE calibration
The following procedure changes the setting of head 01 as an example.

1
2

Hold down the SET key.

Press the
key to select the target sensor head (HEAD01,
) and then press the ENT key.

Press the
key to select the Head settings (
press the ENT key.

) and then

head

head01
head01

Press the
key to select function symbol D (ABLE
calibration, ) and then press the ENT key.

abcdef
able_t

" is displayed.

start
able_t

Press the ENT key.

6
7

Press the ENT key.

3-14

"
" is displayed and the measurement starts.
The measurement continues while "
" is displayed.

The setting is saved.
Press the SET key.
The system returns to the measuring status.

stop
able_t

3 Function Settings

Setting the mounting mode according to the sensor head mounting method (Mounting mode)
The LK-G5000 Series measures the displacement of a target by measuring the laser beam
reflected from the surface of the target. When the target surface is flat, such as a mirror or
glass plate, the specular reflection component of the reflected light increases. In such a
case, use the specular reflection mounting so that the sensor head receives the specular
reflection light properly.
The following two types of mounting modes are available.
Function No.

Mounting
mode

Function

Diffuse
reflection

Set the diffuse reflection mounting. Select this option during normal
operation.

Specular
reflection

Set the specular reflection mounting. Select this option when the
target is a mirror, a glass plate, or other similar object. The
displayed value is corrected for the specular reflection mounting.

Setting the mounting mode
The following procedure changes the setting of head 01 as an example.

1
2

Press the
key to select the Head settings (
press the ENT key.

Press the
key to select the target sensor head (HEAD01,
) and then press the ENT key.

Press the
key to select function symbol E (Mounting
mode, ) and then press the ENT key.

Press the
key to select E-0 (Diffuse reflection,
then press the ENT key.
The setting is saved.

Press the SET key.
The system returns to the measuring status.

Hold down the SET key.
) and then

head
head01
head01
abcdef
mount
) and

e_0
diff_s

NOTE
The K type sensor head is always set to the specular reflection mode regardless of the mounting mode
setting.

3-15

3 Function Settings

Specifying two points in the measurement range to exclude a certain area from the measurement (Mask setting)
The mask setting function is used to specify two points in the measurement range to mask
a certain area. By setting the mask, you can exclude the area within or outside of the area
between the points from the measurement.

Setting the mask
The following procedure changes the setting of head 01 as an example.

3 1
2
3

Hold down the SET key.
Press the
key to select the Head settings (
press the ENT key.

) and then

head

Press the
key to select the target sensor head (HEAD01,
) and then press the ENT key.

head01
head01

Press the
key to select function symbol F (Mask
setting, ) and then press the ENT key.

abcdef
mask

Press the
key to select F-1 (Mask setting: ON,
then press the ENT key.

) and

f_1
on

Use the
and
keys to set the mask starting point
(P-1) and then press the ENT key.
Reference

0000.00
pos_1

The starting and ending points for the Mask setting can be specified in
the unit of 0.01 mm.
Values smaller than 0.01 mm are automatically processed inside the system.

3-16

3 Function Settings

Use the
and
keys to set the mask ending point (P2) and then press the ENT key.
The setting is saved.

0000.00
pos_2

Press the SET key.
The system returns to the measuring status.

Area masked with the mask setting
The area to be masked depends on the values of the starting point (P-1) and ending point
(P-2).
 When the starting point (P-1) is larger than the ending point (P-2)
The mask is set to the area outside the area between these points.
Measurement
range upper limit

P-1

P-2

Measurement
range lower limit

Mask area
Area to be measured

Mask area

Area to be measured

Mask area

Measurement
range upper limit
P-1

P-2
Mask area Measurement
range lower limit

 When the starting point (P-1) is smaller than the ending point (P-2)
The mask is set to the area inside the area between these points.
Measurement
range upper limit

P-2

P-1

Measurement
range lower limit

Area to be measured

Mask area

Area to be measured

Measurement
range upper limit
P-2

Mask area
P-1
Area to be measured Measurement
range lower limit

 When the starting point (P-1) equals the ending point (P-2)
The entire measurement range is measured (no mask is set).

3-17

3 Function Settings

Preventing measurement fluctuations by ignoring sudden changes in the measured value (Median)
This function applies a 7-, 15-, or 31-point median filter to prevent measurement
fluctuations by ignoring sudden changes in the measured value. This function is useful
when the target moves fast.
 Example when the 7-point median filter is used
Seven measured values are arranged in the order of magnitude and the value at the
center is considered to be the measured value.

Measurements count (1)
1.1
Measured value

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

1.0

1.5

0.9

1.0

1.1

1.0

First median

1.0

Second median

1.0

Third median

In the case of the first median, for example, the measured values (1) to (7) are sorted
in the following order.
Consequently, the value at the center, 1.0, is the measured value.
1.5

1.1

1.0

0.9

Setting the median
The following procedure changes the setting of head 01 as an example.

1
2

Hold down the SET key.

Press the
key to select the target sensor head (HEAD01,
) and then press the ENT key.

Press the
key to select the Head settings (
press the ENT key.

) and then

head

head01
head01

Press the
key to select function symbol G (Median,
and then press the ENT key.

)

ghij
median

3-18

3 Function Settings

Press the
key to select G-1 (Median: 7,
press the ENT key.
The setting is saved.

Press the SET key.

) and then

G_1
7

The system returns to the measuring status.

3-19

3 Function Settings

Grouping the laser control operation (LASER CTRL group)
This function is used to control laser operation such as turning on/off two or more sensor
heads by grouping them into two groups. It is useful when sensor heads are used in
different production lines.
Function No.

LASER CTRL
group

Function

LASER CTRL1

Assign the currently selected sensor head to the LASER CTRL1
group.

LASER CTRL2

Assign the currently selected sensor head to the LASER CTRL2
group.

Setting the LASER CTRL group
The following procedure changes the setting of head 01 as an example.

1
2

Hold down the SET key.

Press the
key to select the target sensor head (HEAD01,
) and then press the ENT key.

Press the
key to select the Head settings (
press the ENT key.

) and then

head

head01
head01

Press the
key to select function symbol H (LASER
CTRL group, ) and then press the ENT key.

ghij
l_off

Press the
key to select H-1 (LASER CTRL group2,
and then press the ENT key.
The setting is saved.

3-20

Press the SET key.
The system returns to the measuring status.

)

h_1
2

3 Function Settings

Setting the measurement position (Range)
This function is used to set the measurement range to either the reference position or the
FAR side when the sampling cycle is between 2.55 μs and 10 μs.
Function No.

Range

Function

CENTER

Set the measurement range at the reference position.

FAR

Set the measurement range at the FAR side.

Setting the range
The following procedure changes the setting of head 01 as an example.

1
2

Press the
key to select the Head settings (
press the ENT key.

Press the
key to select the target sensor head (HEAD01,
) and then press the ENT key.

Hold down the SET key.
) and then

head

head01
head01

Press the
key to select function symbol I (Range, )
and then press the ENT key.

ghij
range

Press the
the ENT key.

key to select I-1 (FAR,

) and then press

The setting is saved.

Press the SET key.

i_1
far

The system returns to the measuring status.

Reference
• For details about the relationship between the sampling cycle and measurement range, refer to
page 1-12 (for the 20 mm type sensor head) or page 1-13 (for the 50 mm type sensor head).
• When the sampling cycle is 20 μs to 1 ms, the measurement range in the specification table is used
regardless of the CENTER/FAR setting.

3-21

3 Function Settings

Setting the reference starting point for peak counting (Base point)
This function is used when the measurement mode is set to Transparent object and
several peaks are detected within the measurement range. You can specify which peak
will be used as a base point, either the one on the side nearest to the sensor head (NEAR)
or the one on the side farthest from the sensor head (FAR).
Function No.

Base point

Function
Start counting from the peak nearest to the sensor head.

Example when the measurement target is the second peak
NEAR

Peak 1
Peak 2
Peak 3
Peak 4
Start counting from the peak farthest from the sensor head.

Example when the measurement target is the second peak
FAR

Peak 4
Peak 3
Peak 2
Peak 1

NOTE
• When the Transparent object 2 mode is selected, the counting starts from the nearest peak
regardless of the base point setting.
• Even when the Transparent object mode is selected and the base point is set to FAR, if the number
of peaks exceeds four, the fourth peak from the NEAR side is counted as 1.
Peak 4
Peak 3
Peak 2
Peak 1
These peaks are not counted.

3-22

3 Function Settings

Setting the base point
The following procedure changes the setting of head 01 as an example.

1
2

Press the
key to select the Head settings (
press the ENT key.

Press the
key to select the target sensor head (HEAD01,
) and then press the ENT key.

Hold down the SET key.
) and then

head

3
head01
head01

Press the
key to select function symbol J (Base point,
) and then press the ENT key.

ghij
base

Press the
the ENT key.

key to select J-1 (FAR,

The setting is saved.

Press the SET key.

) and then press

j_1
far

The system returns to the measuring status.

3-23

3 Function Settings

Setting the measurement value output
conditions (OUT)
This section describes the settings of the functions related to data processing.
NOTE

When you change the active head count or active OUT count in the Environment settings, all the
settings of the LK-G5000 Series except for the Environment settings (ENV) are reset. When you
connect the LK-HA100 head expansion unit(s) and add a sensor head(s), be sure to specify the
active head count and active OUT count before changing the other measurement settings.

List of functions and function Nos.
Function
symbol

Function
Function
display
OUT
calculation

Function No.
0

Sensor
Addition
OUT
head
between
selection
selection
OUT

Subtracti
on
between
OUT

Average
of
selected
OUT

Peak-topeak of
selected
OUT

Maximum
value of
selected
OUT

Scaling

Filter

Averaging

Low-pass Highfilter
pass filter

Peak
hold

Bottom
hold

P-to-P
hold

Sample Average
hold
hold

page
3-37

Trigger 1 Trigger 2

Minimum
In mm
display unit

page
3-45
page
3-47

In mm

Analog
scaling

In μm

page
3-48

page
3-50

Measurement Displace
AcceVelocity
type
-ment
leration

3-24

Minimum
value of
selected page
3-28
OUT

page
3-33

Offset

* The shaded cells (

Reference
page

page
3-31

Measurement
Normal
mode

Trigger

) are set by default.

page
3-53

3 Function Settings
Functions A-0 and C require settings for the following sub-functions.
Subfunction
symbol

Subfunction
symbol

Function

Function No.

Function
display

Sensor
head for
transparent Surface 1
object
detection

Surface 2

Surface 3

Surface 4

Surface 1 - Surface 1 2
3

Moving
average

1 time

4 times

16 times

64 times

256 times

1024 times

Low-pass
filter

3000 Hz

1000 Hz

300 Hz

100 Hz

30 Hz

10 Hz

High-pass
filter

3000 Hz

1000 Hz

300 Hz

100 Hz

30 Hz

10 Hz

Function

Function No.

Function
display

Reference
page

Sensor
head for
Surface 2 - Surface 2 - Surface 3 transparent Surface 1 - 4
3
4
4
page 3-28
object
detection

Moving
average

4096 times

16384
times

65536
times

262144
times

Low-pass
filter

3 Hz

1 Hz

0.3 Hz

0.1 Hz

High-pass
filter

3 Hz

* The shaded cells (

page 3-33

1 Hz

0.3 Hz

0.1 Hz

) are set by default.

3-25

3 Function Settings

List of initial values and setting ranges
Function
symbol

Item

Setting range

Calculation method

HEAD/OUT/ADD/SUB/AVE/P-P/MAX/MIN HEAD

Sensor head

Head 01 to 12

Surface to be measured

1, 2, 3, 4, 1-2, 1-3, 1-4, 2-3. 2-4, 3-4

OUT
ADD

Initial value

Remark

02
OUT01 to 12
02/02

SUB
AVE
P-P

ON/OFF of OUT01 to 12

OFF

MAX
MIN
Input value for the first point -999999 to +999999

000.000

Display value for the first
point

-999999 to +999999

000.000

Input value for the second
-999999 to +999999
point

001.000

Display value for the
second point

-999999 to +999999

001.000

Number of moving
average operations

1/4/16/64/256/1024/4096/16384/65536/
256
262144

Cutoff frequency

3000/1000/300/100/30/10/3/1/0.3/0.1

Measurement mode

Normal/peak hold/bottom hold/peak-toNormal
peak hold/average hold/sample hold

Trigger

Trigger 1/Trigger 2

Trigger 1

Offset

-999999 to +999999

000.000

Minimum display unit

0.01 mm/0.001 mm/0.0001 mm/
0.00001 mm/0.1 μm/0.01 μm/0.001 μm

0.001 mm

Display value for the first
point

-999999 to +999999

001.000

Output value for the first
point

-10.5 V to +10.5 V

01.000

Display value for the
second point

-999999 to +999999

-001.000

Output value for the
second point

-10.5 V to +10.5 V

-01.000

Measurement type

Displacement/velocity/acceleration

Displacement

Upper tolerance limit

-999999 to +999999

005.000

-999999 to +999999

-005.000

0 to +999999

000.000

Tolerance Lower tolerance limit
Hysteresis width

3-26

100 Hz

Setting range
is the same
for both LPF
and HPF.

3 Function Settings

List of the OUT settings screens
OUT

OUT01

OUT calculation

OUT02

Scaling

Filter

OUT12

Measurement
mode

Trigger

Offset

Minimum display
unit

Analog scaling

Measurement type

3-27

3 Function Settings

Setting the OUT calculation (Calculation method)
This function is used to select the calculation method according to the target, whether to
measure surface displacement, thickness, or height difference, based on the data obtained
with the Head settings.

Function Nos. and measurement examples
Function No.

Calculation

Function

Sensor head

Measures surface displacement using the specified
sensor head.

OUT

Specifies the measured value of the other sensor
head to be input.

Addition

Measures
thickness
using head
01 and 02.*
Thickness
measurement

Subtraction

Measures
height
difference
using head
01 and 02.

Height
difference
measurement

AVE (Average among OUT)

Calculates the average of several OUT channels.

P-P (Peak-to-peak value)

Calculates the P-P value of several OUT channels.

MAX (Maximum value among OUT) Calculates the maximum value of several OUT channels.
MIN (Minimum value among OUT)

Calculates the minimum value of several OUT channels.

* The auto-zero function is required.

Sub-functions and the surface to be measured
The following settings are used when the Transparent object or Transparent object 2 mode is
selected.
Sub-function symbol Surface to be measured
1
2

Function
Measures displacement of one
surface.

3
1(4)*
2(3)
3(2)
4(1)

4
1-2
1-3
1-4
2-3
2-4
3-4

Measures and calculates the
relationship between two
surfaces.
When "4" is selected, the
thickness of the first glass plate
is measured.
When "7" is selected, the gap
between the first and second
glass plates is measured.

1(4)*
2(3)
3(2)
4(1)

* The values in parentheses indicate the surface to be measured when the Transparent object mode is
selected and the base point is set to FAR.

3-28

3 Function Settings

Using the output value of OUT in calculations more than once
The output value of OUT can be used in calculations up to two times as shown below.

Example when the output value of OUT01 is used repeatedly in calculations
OUT01

OUT02

1st time Head 01

Head 02

2nd time

OUT03

OUT05

OUT01 + OUT02

3rd time
4th time

OUT04

OUT03 + OUT01

OUT04 + OUT01

• Output data of OUT01: Measured value of head 01
• Output data of OUT02: Measured value of head 02
• Output data of OUT03: Sum of OUT01 and OUT02 (Value calculated using the
measured values of head 01 and head 02)
• Output data of OUT04: Sum of OUT03 and OUT01 (Value calculated using the measured
values of head 01 and head 02 as well as using the measured value of head 01)
NOTE
The measured value of one sensor head cannot be used four times or more. (Refer to the case of the
4th time in the figure above.)

Setting the calculation among OUT
The following procedure changes the setting of OUT01 as an example.

1
2

Press the
key to select the OUT settings (
press the ENT key.

Press the
key to select the target OUT (OUT01,
and then press the ENT key.

Hold down the SET key.
) and then

out
)

out_01
out_01

3-29

3 Function Settings

Press the
key to select function symbol A (Calculation
among OUT, ) and then press the ENT key.

abcdef
calc

Press the
key to select A-2 (Addition,
press the ENT key.

) and then

a_2
add

Press the
key to select the target OUT to assign as
Add-1 and then press the ENT key.

out_02
add_1

Press the
key to select the target OUT to assign as
Add-2 and then press the ENT key.

Press the SET key.

out_02
add_2

The system returns to the measuring status.

NOTE
• When the Transparent object 2 mode (page 3-8) is set, select the surface on which the
measurement target actually exists.
• The OUT data obtained with the velocity or acceleration measurement cannot be specified as
calculation data for the other OUT.

3-30

3 Function Settings

Calibrating the displayed value based on the measured value (Scaling)
This function is used to calibrate the value displayed for each OUT based on the
measured value.
You need to select two points and specify values to be displayed for them respectively as
a result of the calibration.

Setting the scaling
This section describes the setting procedure for the following calibration as an example.
Setting item
Point 1

Point 2

Setting value

Original input value 1

-1.0200

Calibrated displayed
value 1

-1.0000

Original input value 2

0.9900

Calibrated displayed
value 2

1.0000

Display

Before
calibration

After
calibration
1.0000

0.99
-1.02

-1.02
0.99

Input

0.99

-1.02

Input

-1.0000

The following procedure changes the setting of OUT01 as an example.

1
2

Press the
key to select the OUT settings (
press the ENT key.

Press the
key to select the target OUT (OUT01,
and then press the ENT key.

Hold down the SET key.
) and then

out
)

out_01
out_01
3-31

3 Function Settings

Press the
key to select function symbol B (Scaling, )
and then press the ENT key.

abcdef
scal

Use the
and
keys to set the input value 1 for point
1 for OUT01 and then press the ENT key.
The current measured value can be loaded by pressing the
ZERO key.

3
6

Use the
and
keys to set the displayed value 1 for
point 1 for OUT01 and then press the ENT key.

000.000
inpt1
000.000
disp1

Use the
and
keys to set the input value 2 for point
2 for OUT01 and then press the ENT key.
The current measured value can be loaded by pressing the
ZERO key.

Use the
and
keys to set the displayed value 2 for
point 2 for OUT01 and then press the ENT key.
The setting is saved.

000.000
inpt2
000.000
disp2

Press the SET key.
The system returns to the measuring status.

NOTE
When the following conditions are not satisfied, "
" is displayed and the setting is disabled.
Press the ENT key to cancel the error and then set the scaling again.
(1) Input value 1 - Input value 2  0
(2)
Displayed value 2 - Displayed value 1

2

Input value 2 - Input value 1
Reference
If the ZERO key is pressed during the value input step, the current measured value is used as an input
value. If this key is pressed and held for three seconds, the initial value is input.

3-32

3 Function Settings

Apply a filter to ensure stable measurement (Filter)
The LK-G5000 Series offers the following three types of filter operations.
Function No.

Filter name

Function

Averaging

The moving average of the measured values is calculated.
Set the number of averaging measurements.

Low-pass filter

Abrupt changes are ignored and only moderate changes are
detected. Set the cutoff frequency.

High-pass filter

Moderate changes are ignored and only abrupt changes are
detected. Set the cutoff frequency.

Setting the averaging filter
The averaging filter calculates the moving average of the measured values within the
range of 1 to 262144 times.
The following is an example of the process when the number of averaging measurements
is set to four.
Sampling cycle

Measurement
averaging time
Internal data

Outputs data A by averaging data
1 to 4 .

Measurement
averaging time

Outputs data B by averaging data
2 to 5 .

Measurement
averaging time
Outputs data C by averaging data
3 to 6 .
Output data

Refresh Refresh
cycle
cycle

Reference
The sampling cycle, measurement averaging time, and refresh cycle vary depending on the settings.
Refer to "Response delay time" (page 6-14) for details.

3-33

3 Function Settings
The following procedure sets the averaging filter to OUT01 as an example.

1
2
3 3

Hold down the SET key.
Press the
key to select the OUT settings (
press the ENT key.

) and then

out

Press the
key to select the target OUT (OUT01,
and then press the ENT key.

)

out_01
out_01

Press the
key to select function symbol C (Filter, )
and then press the ENT key.

abcdef
filter

Press the
key to select C-0 (Averaging,
press the ENT key.

) and then

c_0
avg

Press the
key to set the number of averaging
measurements and then press the ENT key.
In this example, "1024" is set.
The setting is saved.

3-34

Press the SET key.
The system returns to the measuring status.

c_a5
1024

3 Function Settings

Setting the low-pass filter/high-pass filter
Each of these filters requires a cutoff frequency to be set.
When the filter is set, the data is processed as follows:
Measured value

Input waveform

Time

Measured value

Waveform processed with the
high-pass filter

Waveform processed with the
low-pass filter

Time

The following procedure sets the low-pass filter to OUT01 as an example.

1
2

Press the
key to select the OUT settings (
press the ENT key.

Press the
key to select the target OUT (OUT01,
and then press the ENT key.

Hold down the SET key.
) and then

out
)

out_01
out_01

Press the
key to select function symbol C (Filter, )
and then press the ENT key.

abcdef
filter
3-35

3 Function Settings

Press the
key to select C-1 (Low-pass filter,
then press the ENT key.
To set the high-pass filter, select

) and

c_1
lpf

Press the
key to select C-L4 (30 Hz,
press the ENT key.
The setting is saved.

3 7

Press the SET key.

) and then

c_l4
30

The system returns to the measuring status.

Reference
The cutoff frequency setting is restricted as follows by the sampling cycle (page 3-58) setting.
• When the sampling cycle is set to 1000 μs or 500 μs: Even if the cutoff frequency is set to 3000 Hz,
1000 Hz, or 300 Hz, the setting of 100 Hz is used.
• When the sampling cycle is set to 200 μs: Even if the cutoff frequency is set to 3000 Hz or 1000 Hz,
the setting of 300 Hz is used.
• When the sampling cycle is set to 50 μs or 100 μs: Even if the cutoff frequency is set to 3000 Hz, the
setting of 1000 Hz is used.
• When the sampling cycle is set to 5.0 μs or 10 μs: Even if the cutoff frequency is set to 0.1 Hz, the
setting of 0.3 Hz is used.
• When the sampling cycle is set to 2.55 μs: Even if the cutoff frequency is set to 0.1 Hz or 0.3 Hz, the
setting of 1 Hz is used.

3-36

3 Function Settings

Using the Hold function (Measurement mode)
The LK-G5000 Series offers six types of measurement modes.

The following table describes the operations of these measurement modes.
Function No.

Mode name

Reference
page

Description

The measurement
result can be
displayed/output
page 3-39
constantly.

Normal

Max.
value

Peak hold

The maximum
value during the
specified period
can be measured. page 3-40

Sampling period

The minimum
value during the
specified period
can be measured. page 3-40

Min. value

Bottom hold
Sampling period

The "maximum
value - minimum
value" during the
specified period page 3-40
can be measured.

Max. value Min. value

Peak-topeak hold
Sampling period

Sample hold
value

Sample hold

The value at the
specified
moment
can be
measured.

page 3-42,
page 3-43

Synchronous input

Average
hold

Average
value

The average
value during the
specified period
can be measured. page 3-40

Sampling period

There are two sampling period types which are determined by the trigger condition
settings Trigger 1 and Trigger 2 (page 3-45).

3-37

3 Function Settings

Setting the measurement mode
The following procedure sets the peak hold to OUT01 as an example.

1
2

Press the
key to select the OUT settings (
press the ENT key.

Press the
key to select the target OUT (OUT01,
and then press the ENT key.

Hold down the SET key.
) and then

out
)

out_01
out_01

Press the
key to select function symbol D (Hold, ) and
then press the ENT key.

abcdef
hold

Press the
key to select D-1 (Peak hold,
press the ENT key.
The setting is saved.

3-38

Press the SET key.
The system returns to the measuring status.

) and then

d_1
p_h

3 Function Settings

Normal
Measurement is performed continuously and the measured value is displayed/output
constantly.
Measured value

Measured value in Normal mode

Internal measured value

RESET operation

HI setting value

LO setting value

Comparator standby
("--------" is displayed)
t

HI output

ON
OFF

GO output

ON
OFF

LO output

ON
OFF

Synchronous input

ON
OFF

RESET input

ON
OFF

RS-232C output

Measured value

• The ON state of each output indicates that the NPN or PNP open-collector output is
turned on.
• The ON state of each input indicates the following: For NPN type, the corresponding
terminal and the COM terminal are short-circuited; and for PNP type, the voltage is
applied between the corresponding terminal and the COM terminal.
• The RS-232C output is synchronized with the input to the TIMING1 terminal when
"Automatic transmission" in the Environment settings is set to ON (page 3-72).
• Refer to "Functions of the I/O Signals" (page 4-8) for details about binary output.
• If an alarm occurs for the internal measured value during the sampling period, the
measurement result is displayed differently depending on the alarm handling setting as
follows:
Process count set to 9999: The measurement result is output using the last held value.
Process count set to 0 to 9998: When the alarm continues for longer than the specified
process count during the sampling period, an alarm value (-FFFFFF) is output as the
measurement result.
Reference
• If the reset input is turned ON while the synchronous input is on, the comparator standby status (the
display shows "______") continues until the synchronous input turns off.
• The synchronous input and reset input can be controlled using the RS-232C (5-9 and page 5-11).
• The operation is the same regardless of the setting of Trigger 1 or Trigger 2.

3-39

3 Function Settings

Peak hold/bottom hold/peak-to-peak hold/average hold
Measurement is performed within the period of time specified with the external
synchronous input (sampling period), and the displayed/output value is retained. The
sampling period differs between the Trigger 1 and Trigger 2 settings.

Peak hold

Measures the maximum value within the specified period of time (sampling period).

Bottom hold

Measures the minimum value within the specified period of time (sampling period).

Peak-to-peak hold

Measures the "maximum value - minimum value" within the specified period of time
(sampling period).

Average hold

Measures the average value within the specified period of time (sampling period).
Measured value

(Example) Measured value in peak-hold mode

Internal measured value

Comparator standby
("--------" is displayed)
Trigger 1
Trigger 2
Synchronous input
RESET input
Comparator output
Binary output
RS-232C output

Sampling
period
Sampling
period

Sampling period

RESET
operation

Sampling period
Sampling period
t

ON
OFF
ON
OFF
ON
OFF

Comparator operation
--------

Measured value
Measured value

Comparator operation

Comparator operation
Measured value
Measured value

--------

Measured value
Measured value

• When Trigger 1 is selected (page 3-45), the sampling period is the period between the
instant when the synchronous input turns on and the instant when the next synchronous
input turns on. When the synchronous input turns on, the measured value for the
preceding sampling period is output.
The RESET operation is not performed when the synchronous input is turned on.
• When Trigger 2 is selected (page 3-45), the sampling period is the period when the
synchronous input is turned off. When the synchronous input turns on, the measured
value for the preceding sampling period is output.
The RESET operation for the internal measured value is performed when the
synchronous input turns off.
• In the following cases, the comparator standby status (the display shows "______")
continues until the first measured value is determined:
When the power is turned on, when a setting is changed, when a program number is
changed, when RESET is input, or when auto-zero is input.
• The comparator output is provided according to the measured value.
• The ON state of each output indicates that the NPN or PNP open-collector output is
turned on.
• The ON state of each input indicates the following: For NPN type, the corresponding
terminal and the COM terminal are short-circuited; and for PNP type, the voltage is
applied between the corresponding terminal and the COM terminal.
• The RS-232C output is synchronized with the input to the TIMING1 terminal when
"Automatic transmission" in the Environment settings is set to ON (page 3-72).

3-40

3 Function Settings
• Refer to "Functions of the I/O Signals" (page 4-8) for details about binary output.
• If the synchronous input turns on during the RESET operation, the comparator standby
status (the display shows "
") starts.
• If an alarm occurs for the internal measured value during the sampling period, the
measurement result is displayed differently depending on the alarm handling setting as
follows:
Process count set to 9999:The measurement result is output using the last held value.
Process count set to 0 to 9998:When the alarm continues for longer than the specified
process count during the sampling period, an alarm value (-FFFFFF) is output as the
measurement result.

Reference
• The synchronous input and reset input can be controlled using the RS-232C (page 5-9 and page 511).
• The strobe output time can also be changed. Refer to "Setting the strobe output time (Strobe time)"
(page 3-64) for details.

NOTE
When the average hold is selected for the measurement mode, set the filter function to the averaging
filter with the number of averaging measurements set to one.

3-41

3 Function Settings

Sample hold (Trigger 1)
Measured value
Measured value in sample hold mode

Internal measured
value

Comparator standby
("--------" is displayed)

RESET
operation
t

Synchronous input
RESET input
Comparator output
Binary output
RS-232C output

ON
OFF
ON
OFF
ON
OFF

Comparator operation

Measured value

------Measured value

Measured value

Comparator operation
-------

Measured value
Measured value

• The internal measured value when the synchronous input turns on is held and output.
• In the following cases, the comparator standby status (the display shows "______")
continues until the first measured value is determined:
When the power is turned on, when the mode is changed, when a program number is
changed, when RESET is input, or when auto-zero is input.
• The comparator output is provided according to the measured value.
• The ON state of each output indicates that the NPN or PNP open-collector output is
turned on.
• The ON state of each input indicates the following: For NPN type, the corresponding
terminal and the COM terminal are short-circuited; and for PNP type, the voltage is
applied between the corresponding terminal and the COM terminal.
• The RS-232C output is synchronized with the input to the TIMING1 terminal when
"Automatic transmission" in the Environment settings is set to ON (page 3-72).
• If an alarm occurs for the internal measured value during the sampling period, the
measurement result is displayed differently depending on the alarm handling setting as
follows:
Process count set to 9999: The measurement result is output using the last held value.
Process count set to 0 to 9998: When the alarm continues for longer than the specified
process count during the sampling period, an alarm value (-FFFFFF) is output as the
measurement result.
Reference
• The synchronous input and reset input can be controlled using the RS-232C (5-9 and page 5-11).
• The strobe output time can also be changed. Refer to "Setting the strobe output time (Strobe time)"
(page 3-64) for details.

3-42

3 Function Settings

Sample hold (Trigger 2)
Measured value

Internal measured value
Measured value in sample hold mode

Comparator standby
("--------" is displayed)

Synchronous input

ON
OFF

RESET input

ON
OFF

Comparator output

ON
OFF

Strobe output

ON
OFF

Binary output
RS-232C output

Sampling
period

Comparator operation

----------

Measured value
Measured value

RESET
operation

Measured value

3
Comparator operation

Comparator operation

Measured value

Sampling
period

----------

Measured value
Measured value

• When the synchronous input turns on, the internal measurement value, which is
determined by sampling the data from the specified number of averaging
measurements obtained since the synchronous input, is held and output.
• In the following cases, the comparator standby status (the display shows "______")
continues until the first measured value is determined:
When the power is turned on, when the mode is changed, when a program number is
changed, when RESET is input, or when auto-zero is input.
• The comparator output is provided according to the measured value.
• The ON state of each output indicates that the NPN or PNP open-collector output is
turned on.
• The ON state of each input indicates the following: For NPN type, the corresponding
terminal and the COM terminal are short-circuited; and for PNP type, the voltage is
applied between the corresponding terminal and the COM terminal.
• The RS-232C output is synchronized with the input to the TIMING1 terminal when
"Automatic transmission" in the Environment settings is set to ON (page 3-72).
• If the synchronous input turns on during the RESET operation, the system stops the
RESET operation and starts sampling.
• If an alarm occurs for the internal measured value during the sampling period, the
measurement result is displayed differently depending on the alarm handling setting as
follows:
Process count set to 9999: The measurement result is output using the last held value.
Process count set to 0 to 9998: When the alarm continues for longer than the specified
process count during the sampling period, an alarm value (-FFFFFF) is output as the
measurement result.
• If the RESET input or ZERO input is turned on during the sampling period, the sampling
stops and the comparator standby status starts.

3-43

3 Function Settings
Reference
• The synchronous input and reset input can be controlled using the RS-232C (page 5-9 and page 511).
• The strobe output time can be changed. Refer to "Setting the strobe output time (Strobe time)"
(page 3-64) for details.

NOTE
The filter function should be set to "Averaging" (page 3-33). The number of averaging measurements
can be set as desired.

3-44

3 Function Settings

Setting the trigger condition (Trigger)
The Trigger 1 and Trigger 2 settings determine the sampling period during which the
measured value is held for the specified measurement mode operation. For the
differences in the timing, refer to "Using the Hold function (Measurement mode)" (page 337).
Trigger
Function
No.

Function
Normal

Trigger 1

Peak hold/
bottom hold/
peak-to-peak hold/
average hold

Sample hold

Sets the sampling period
from the rising edge of the
synchronous signal to the
next rising edge.

Holds the internal
measured value at the
rising edge of the
synchronous signal.

Holds the internal
measured value at the
rising edge of the
synchronous signal for the Sets the sampling period
period while the signal is
from the falling edge of the
Trigger 2 turned ON.
synchronous signal to the
next rising edge.

When the synchronous
input rises (turns on), it
holds the internal
measurement value which
is determined by sampling
the data of the specified
number of averaging
measurements obtained
since the synchronous
input.

The following procedure sets Trigger 2 to OUT01 as an example.

1
2

Press the
key to select the OUT settings (
press the ENT key.

Press the
key to select the target OUT (OUT01,
and then press the ENT key.

Hold down the SET key.
) and then

out
)

out_01
out_01

Press the
key to select function symbol E (Trigger, )
and then press the ENT key.

abcdef
trig
3-45

3 Function Settings

Press the
key to select E-1 (Trigger 2,
press the ENT key.
The setting is saved.

6
3

3-46

Press the SET key.
The system returns to the measuring status.

) and then

e_1
tim2

3 Function Settings

Using offset in the measurement (Offset)
The offset function is used to add or subtract a desired value to or from the displayed
value. By setting the offset value in advance, you can display that value when performing
the auto-zero operation.
The offset value is applied to the measured value after it is processed with the specified
measurement mode and auto-zero operations. Refer to "List of initial values and setting
ranges" (page 3-26) for the setting range and restrictions of the offset function.
Reference
The offset value can also be used for master adjustment by using the auto-zero function (auto-offset
function).
Set the size of the master target as the offset value and then use the auto-zero function while measuring
the master target. The size of the master target can be set as the master value (reference value).

Setting the offset value
The following procedure sets the offset to OUT01 as an example.

1
2

Press the
key to select the OUT settings (
press the ENT key.

Press the
key to select the target OUT (OUT01,
and then press the ENT key.

Hold down the SET key.
) and then

out
)

out_01
out_01

Press the
key to select function symbol F (Offset, )
and then press the ENT key.

abcdef
offset

Use the
and
press the ENT key.

keys to set the offset value and then

In this example, "0.03" is set.
The setting is saved.

Press the SET key.

000.030
offset

The system returns to the measuring status.

3-47

3 Function Settings

Setting the unit and minimum display unit (Minimum display unit)
With the LK-G5000 Series, the display unit and minimum display unit can be selected from
the six options listed in the tables below.
The factory default setting is "
".
 When "Displacement" is selected for the measurement type (page 3-53)
Function No.

Minimum display unit

Unit

Display range

0.01

-9999.99 to +9999.99

0.001

-999.999 to +999.999

0.0001

-99.9999 to +99.9999

0.00001

-9.99999 to +9.99999

0.1

μm

-99999.9 to +99999.9

0.01

μm

-9999.99 to +9999.99

0.001

μm

-999.999 to +999.999

 When "Velocity" is selected for the measurement type (page 3-53)
Function No.

Minimum display unit

Unit

Display range

0.1

m/s

-99999.9 to +99999.9

0.01

m/s

-9999.99 to +9999.99

0.001

m/s

-999.999 to +999.999

0.1

mm/s

-99999.9 to +99999.9
-9999.99 to +9999.99

0.01

mm/s

0.001

mm/s

-999.999 to +999.999

0.0001

mm/s

-99.9999 to +99.9999

 When "Acceleration" is selected for the measurement type (page 3-53)
Function No.

3-48

Minimum display unit

Unit

Display range

0.1

km/s2

-99999.9 to +99999.9

0.01

km/s2

-9999.99 to +9999.99

0.001

km/s2

-999.999 to +999.999

0.1

m/s2

-99999.9 to +99999.9

0.01

m/s2

-9999.99 to +9999.99

0.001

m/s2

-999.999 to +999.999

0.0001

m/s2

-99.9999 to +99.9999

3 Function Settings

Setting the unit and minimum display unit
The following procedure sets OUT01 as an example.

1
2

Press the
key to select the OUT settings (
press the ENT key.

Press the
key to select the target OUT (OUT01,
and then press the ENT key.

Hold down the SET key.
) and then

out

3
)

out_01
out_01

Press the
key to select function symbol G (Minimum
display unit, ) and then press the ENT key.

ghi
decpt

Press the
key to select G-3 (Unit: mm, Minimum
display unit: 0.00001,
) and then press the ENT key.
The setting is saved.

Press the SET key.

g_3
0.00001

The system returns to the measuring status.

NOTE
If the unit and minimum display unit are changed, the settings related to the numerical value display
for the same OUT of the same program number (tolerance, scaling, offset, and analog output scaling)
as well as the auto-zero setting value are initialized.

3-49

3 Function Settings

Scaling the analog output (Analog scaling)
The analog voltage output can be scaled into a desired output voltage value within the
range of ±10.5 V.
To set the scaling, select two displayed values and specify analog output values
respectively.
To set the scaling of the analog current output (4 to 20 mA), use a voltage value which is
converted from the current value using the following formula:
Voltage value (V) = (Current value [mA] - 12 mA)/0.8

Voltage (Current)

Over range section on the positive side
+10.8 V (20.64 mA)

+10.5 V (20.4 mA)
+10 V (20 mA)

Point 2

0 V (12 mA)

–10 V (4 mA)
–10.5 V (3.6 mA)

Point 1

When the scaling is set to:
+10 V: +5 mm
-10 V: -5 mm

-5
0
+5
Displayed value [mm]
Over range section on the negative side
–10.8 V (3.36 mA)

NOTE
When the following conditions are not satisfied, "
" is displayed and the setting is disabled.
Press the ENT key to cancel the error and then set the scaling again.
(1) Displayed value 1 - Displayed value 2  0
(2)
Output voltage value 2 - Output voltage value 1

10

Displayed value 2 - Displayed value 1
The output voltage is calculated in the unit of 1 mV, and the displayed value is calculated in the
specified unit and minimum display unit.

3-50

3 Function Settings

Setting the analog output scaling
The following procedure sets the following analog scaling to OUT01 as an example.
Measurement details
Displayed value 1

Measured value

Display

-5.000

Point 1
Analog output voltage value 1 -10.000
Displayed value 2

5.000

Point 2
Analog output voltage value 2 10.000

1
2

Hold down the SET key.

Press the
key to select the target OUT (OUT01,
and then press the ENT key.

Press the
key to select the OUT settings (
press the ENT key.

) and then

out
)

out_01
out_01

Press the
key to select function symbol H (Analog
scaling, ) and then press the ENT key.

ghi
a_scal

Use the
and
keys to set the displayed value 1 for
point 1 and then press the ENT key.

_005.000
1_disp

Use the
and
keys to set the analog output voltage
value 1 for point 1 and then press the ENT key.

_ 10.000
1_out

3-51

3 Function Settings

Use the
and
keys to set the displayed value 2 for
point 2 and then press the ENT key.

005.000
2_disp

Use the
and
keys to set the analog output voltage
value 2 for point 2 and then press the ENT key.
The setting is saved.

3 9

3-52

Press the SET key.
The system returns to the measuring status.

10.000
2_out

3 Function Settings

Setting the type of measurement (Measurement type)
This function is used to set the measurement type according to the required
measurement.
Function No.

Measurement
type

Measurement

Displacement

Measures displacement.

Velocity

Calculates the velocity based on the displacement in the
sampling cycle.

Acceleration

Calculates the acceleration based on the displacement in the
sampling cycle.

NOTE
• The velocity and acceleration which can be calculated vary depending on the sampling cycle.
Refer to "Relationship Between the Sampling Cycle and Velocity/Acceleration Measurement Range"
(page A-11) for details.
• The OUT data obtained with the velocity or acceleration measurement cannot be specified as
calculation data for another OUT.
• The number of OUT which can be set to the velocity/acceleration measurement varies depending
on the sampling cycle as follows: 2.55 μs: 1, 5 μs: 2, 10 μs: 4, and 20 μs or longer: 12. (When the
number of OUT exceeds the limitation, an alarm value is output for the exceeding OUT.)
• When the sensor head measurement mode used for the measurement is Transparent object or
Transparent object 2, the velocity/acceleration is always calculated for the first peak.

Setting the measurement type
The following procedure sets OUT01 as an example.

1
2

Press the
key to select the OUT settings (
press the ENT key.

Press the
key to select the target OUT (OUT01,
and then press the ENT key.

Hold down the SET key.
) and then

out
)

out_01
out_01

3-53

3 Function Settings

Press the
key to select function symbol I
(Measurement type, ) and then press the ENT key.

ghi
apl

Press the
key to select I-1 (Displacement,
then press the ENT key.
The setting is saved.

3 6

3-54

Press the SET key.
The system returns to the measuring status.

) and

i_1
vel

3 Function Settings

Setting the Common Function (OPTION)
This section describes the functions common to all program numbers.

List of functions and function Nos.
Function
symbol

Function

Function No.

Function
display
Sampling
cycle

0
2.55 μs

Mutual
interference OFF
prevention

5 μs

10 μs

2
groups

3
groups

20 μs 50 μs

100
μs

200
μs

500
μs

8
1000
μs

Reference
page

page
3-58

page
3-60

Synchronization
SYNC01 to 12
setting
Set to ON/OFF

page
3-62

Comparator
Normal
output
form

Hold

Offdelay

Strobe time 2 ms

5 ms

10 ms

Data
storage

page
3-63
20 ms

page
3-64
page
3-65

Analog
output

CH01 to CH12

Alarm
output type

System
alarm

Measured
Both
value
alarm

page
3-67

page
3-68

• The shaded cells (
) are set by default.
• Function " " requires the sub-function settings of the number of data and storage cycle (page 365).

3-55

3 Function Settings

List of initial values and setting ranges
Function
symbol

3-56

Item

Setting range

Initial value

Sampling cycle

2.55/5/10/20/50/100/200/500/1000 μs

200 μs

Mutual interference
prevention

OFF/AB-ON/ABC-ON

OFF

Synchronization
setting

ON/OFF for OUT01 to 12

All OFF

Comparator output
form

Normal/Hold/Off-delay

Normal

Strobe time

2/5/10/20 ms

2 ms

Number of data

1 to 1200000 (depends on the number of
OUT for which data is stored)

100000

Storage cycle

1/2/5/10/20/50/100/200/500/1000/TIM

Analog output

CH01 to 12

CH01 =
OUT01,
CH02 =
OUT02

Alarm output type

System alarm/measured value alarm/
both

System
alarm

Remark

3 Function Settings

List of the common function settings screens
OPTION

Sampling cycle

Mutual interference
prevention

Synchronization
setting

Comparator output
form

Strobe time

Data storage

Analog output

Alarm output type

3-57

3 Function Settings

Setting the sampling cycle for the measurement (Sampling cycle)
This function is used to set the sampling cycle for the measurement. Use the initial value
during normal operation. If you want the sampling to be performed more quickly, change it
to shorter values. If the received light intensity is extremely low, change it to longer values.
Function No.

Function (sampling cycle)
2.55 μs
5 μs

10 μs
20 μs
50 μs
100 μs
200 μs
500 μs
1000 μs

The following procedure sets the sampling cycle to 500 μs as an example.

1
2

Press the
key to select the Common settings (
and then press the ENT key.

Press the
key to select function symbol A (Sampling
cycle, ) and then press the ENT key.

Hold down the SET key.
)

option

abcdef
cycle

Press the
key to select A-7 (500 µs,
press the ENT key.
The setting is saved.

3-58

Press the SET key.
The system returns to the measuring status.

) and then

a_7
500

3 Function Settings

NOTE
• The relationships among the measurement mode of the sensor head, the sampling cycle, and the
active OUT count are shown in the table below.
Measurement mode (page 3-8)
Semi
opaque

Sampling cycle (page 3-58)

Normal/
Transparent Transparent
Translucent
object
object 2
object

2.55 µs

5 µs

10 µs

20 to 100 200 µs or
µs
longer





- (-)

12 (12)





- (-)

8 (-)

12 (2)

12 (12)





- (-)

4 (-)

8 (-)

12 (2)

12 (12)



2 (-)

4 (-)

8 (-)

12 (2)

12 (12)

 : When at least one sensor head set to the corresponding measurement mode is connected
 : A sensor head set to the corresponding measurement mode can be connected

X : When a sensor head set to the corresponding measurement mode is not used
- : Setting impossible
The values in the parentheses are the number of OUT which can be used for the calculation of ADD,
SUB, P-P, MAX, MIN, and AVE among OUT.
• The number of OUT which can be set to the velocity/acceleration measurement varies depending
on the sampling cycle as follows: 2.55 μs: 1, 5 μs: 2, 10 μs: 4, and 20 μs or longer: 12. (When the
number of OUT exceeds the limitation, an alarm value is output for the exceeding OUT.)

3-59

3 Function Settings

Setting the mutual interference prevention function (Mutual interference prevention)
When more than one sensor head are connected and mounted in close proximity, they
may receive the light emitted from the other sensor head, resulting in a measurement error.
The mutual interference prevention function assigns the sensor heads to three groups at
maximum, A to C, to allow these groups to emit light alternately. This prevents interference
with the sensor heads in the other group.
When the measurement
points are close

When the thickness of a transparent
object is measured

The following procedure enables the mutual interference prevention function for groups A
and B as an example.

1
2

Press the
key to select the Common settings (
and then press the ENT key.

Press the
key to select function symbol B (Mutual
interference prevention, ) and then press the ENT key.

Hold down the SET key.
)

option
abcdef
alter

Press the
key to select B-1 (AB-ON,
press the ENT key.

) and then

b_1
ab_on

3-60

3 Function Settings

Press the
key to select the group to which head 01 is
assigned and then press the ENT key.
The setting is saved.
Repeat this step for all sensor heads specified with the active
head count (page 3-79).

gr_a
b_g01

Press the SET key.
The system returns to the measuring status.

NOTE
The sampling cycle is double the specified value when the mutual interference prevention function is
set to AB-ON; and is tripled when the function is set to ABC-ON.

3-61

3 Function Settings

Setting the external synchronous input (Synchronization setting)
This function is used to set whether to use synchronous input control for each OUT. The
following two operations can be selected.
Function No.

Synchronization

Function



Asynchronous

Disables synchronization control using TIMING1, ZERO1, and
RESET1, as well as automatic transmission through RS-232C.



Synchronous

Enables synchronization control using TIMING1, ZERO1, and
RESET1, automatic transmission through RS-232C, and
synchronization of storage operation.

*  represents OUT No. (01 to 12)

Setting the synchronization

1
2

Press the
key to select the Common settings (
and then press the ENT key.

Press the
key to select function symbol C
(Synchronization, ) and then press the ENT key.

Hold down the SET key.
)

option

abcdef
sync

Press the
key to select Asynchronous (
) or
Synchronous ( ) and then press the ENT key.
The setting is saved.
Repeat this step for all OUT specified with the active OUT
count (page 3-78).

Press the SET key.
The system returns to the measuring status.

Reference
Also refer to "I/O terminals" (page 4-1).

3-62

off
sync01

3 Function Settings

Setting the output form of the tolerance comparator result (Comparator output form)
This function is used to set the output form of the tolerance comparator result. The
following three types are available.
Function No.

Output form

Function

Normal

Produces outputs according to the tolerance comparator result.

Hold

Holds the output that is turned on. The hold is released when the
measured value is reset.

Off-delay

Applies off-delay of 60 ms to the normal output. The hold is released
when the measured value is reset.

Setting the output form of the tolerance comparator result

1
2

Press the
key to select the Common settings (
and then press the ENT key.

Press the
output form,

Hold down the SET key.
)

key to select function symbol D (Comparator
) and then press the ENT key.

option

abcdef
o_form

Press the
the ENT key.

key to select D-1 (Hold,

The setting is saved.

Press the SET key.

) and then press

d_1
hold

The system returns to the measuring status.

3-63

3 Function Settings

Setting the strobe output time (Strobe time)
This function is used to set the period of time for the strobe output to turn ON (one-shot
output time).
The pulse width can be selected from the following four types.
Function No.

Function (Strobe output time)
2 ms
5 ms

10 ms
20 ms

Reference
• Refer to "Timing diagrams" (page 4-15) for details about the timing diagram.
• Refer to "Binary output" (page 4-19) for details about binary output timing.

Setting the pulse width of the strobe signal

1
2

Press the
key to select the Common settings (
and then press the ENT key.

Press the
key to select function symbol E (Strobe time,
) and then press the ENT key.

Hold down the SET key.
)

option

abcdef
s_time

Press the
key to select E-2 (Pulse width: 10 ms,
and then press the ENT key.

)

The setting is saved.

Press the SET key.
The system returns to the measuring status.

NOTE
This setting is ignored when the measurement mode (page 3-37) is "Normal".

3-64

e_2
10

3 Function Settings

Storing the measured values in the memory (Data storage function)
The LK-G5000 Series can store up to 1,200,000 measured values (1,200,000 is a total and
the available number for each Out Channel depends on the number of Out Channels to
store data) in the internal memory using the external synchronous input or in every storage
cycle. The stored data can be read and checked by using the RS-232C interface or the
LK-Navigator 2 software.
The settings of the function numbers and sub-functions are as follows.
Sub-function symbol Storage cycle selection

Sub-function symbol Storage cycle selection

x 1 (of the sampling cycle)

x 100

x 200

x 500

x 10

x 1000

x 20

Synchronization input

x 50

Reference
• The data to be stored is the measured value of the Out Channel after it is processed with the
specified measurement mode and other operations (page 3-2).
• The "storage cycle" is specified as the multiple of the sampling cycle. When the storage cycle is set
to "Synchronization input", the data is stored in synchronization with the TIMING1 input, the LKNavigator 2 operation, or the simultaneous timing button of the LK-HD1001.
• The storing operation stops when the number of stored data exceeds the specified number.
• The storage time can be calculated as "Sampling cycle x Storage cycle x Number of data".
• Even when the refresh cycle, which is determined with the number of averaging measurements, is
longer than the sampling cycle, the data is stored based on the sampling cycle. In this case, the
same measured value is stored until the measured value is updated.
• Even if "auto-zero" or "RESET" is input during data storage operation, the storage continues without
clearing the stored data.
• When this function is started and stopped repeatedly, the new data is stored after the old data.
• From the display panel (HD500), the number of stored data can be set to only 999,999 at maximum.

Starting/stopping data storage and clearing data
Conditions to start storing data

• Start command from the RS-232C interface
• Operation from the LK-Navigator 2 setup support software

Conditions to stop storing data

• Stop command from the RS-232C interface
• Operation from the LK-Navigator 2 setup support software

3-65

3 Function Settings

Setting the data storage method

1
2
3 3

Hold down the SET key.
Press the
key to select the Common settings (
and then press the ENT key.

)

Press the
key to select function symbol F (Data
storage, ) and then press the ENT key.

option

abcdef
d_str

Use the
and
keys to set the number of data to be
stored and then press the ENT key.
In this example, "1000" is set.

001000
num

Press the
key to select the storage cycle and then
press the ENT key.
In this example, "50x" is set.

f_f05
50

Press the
key to select whether to include the
currently displayed OUT value in the stored data ( ) or not
(
) and then press the ENT key.
The setting is saved.
Repeat this step for all OUT specified with the active OUT
count (page 3-78).

3-66

Press the SET key.
The system returns to the measuring status.

on
f_o01

3 Function Settings

Assigning OUT to the analog output channel (Analog output)
Assigning "OUT" as Analog Output Channel. The number of analog outputs which can be
used are two for the controller unit and one for each head expansion unit.

Setting the analog output

1
2

Press the
key to select the Common settings (
and then press the ENT key.

Press the
key to select function symbol G (Analog
output, ) and then press the ENT key.

Hold down the SET key.
)

option
gh
ao_out

Press the
key to select the analog output channel to
which OUT is assigned and then press the ENT key.

ach_01
ao_out

Press the
to select OUT to be assigned to the analog
output channel selected in step 4 and then press the ENT
key.

out01

The setting is saved.
Repeat steps 4 to 5 for all OUT specified with the active OUT
count (page 3-78).

ach_01

Press the SET key.
The system returns to the measuring status.

3-67

3 Function Settings

Setting the type of alarm output (Alarm output type)
This function is used to select the type of alarm to be output from a system alarm, a
measured value alarm, or both.
Function No.

Alarm output type

Function

System alarm

Outputs an alarm when a system alarm occurred. Once the
alarm is output, the ON state is retained until the power is
turned off.

Measured value
alarm

Outputs an alarm when the received light intensity is
insufficient or excessive.

Both

Outputs both system alarm and measured value alarm.

NOTE
The output uses an N.C. (normally closed) contact. The contact is short-circuited when it is OFF and is
open when it is ON.

Setting the alarm output type

1
2

Press the
key to select the Common settings (
and then press the ENT key.

Press the
output type,

Hold down the SET key.

key to select function symbol H (Alarm
) and then press the ENT key.

)

option

gh
alm

Press the
key to select H-1 (Measured value alarm,
) and then press the ENT key.
The setting is saved.

3-68

Press the SET key.
The system returns to the measuring status.

h_1
outalm

3 Function Settings

Setting the Operating Environment
settings (ENV)
This section describes how to set the device operations.

List of functions and function Nos.
The following five settings are available for the Environment settings. The functions and
setting values are shown below.
Function
symbol

Function

Function No.

Function display
RS-232C

Reference
page

Baud rate

Parity

page
3-72

Automatic transmission

Setting selection

Panel

Terminal
input

Program

Copy

Initialization

page
3-74

Panel lock

OFF

page
3-76

page
3-73

Active OUT count
2(

) to 12 (

)

page
3-78

Active head
count

) to 12 (

)

page
3-79

Active analog
output
channel count

) to 12 (

)

page
3-80

LAN setting

* The shaded cells (

The initial values are as follows:
IP address: 192.168.10.10
Subnet mask: 255.255.255.0
Default gateway: 0.0.0.0

page
3-81

) are set by default.

3-69

3 Function Settings

List of initial values and setting ranges
The function settings at the time of shipment (initial values) and the available setting
ranges are as follows.
Function
symbol

3-70

Item

Setting range

Initial value

Baud rate

9600/19200/38400/57600/115200 bps

9600 bps

Parity

NON/EVEN/ODD

NON

Automatic
transmission

OFF/ON

OFF

Setting selection

Panel operation/external terminal

Panel
operation

Program

Copy/initialization

Panel lock

ON/OFF

OFF

Active OUT count

2 to 12

Active head count

2 to 12

Active analog
output channel
count

2 to 12

LAN setting

Address setting range:
000.000.000.000 to 255.255.255.255
The initial values are as follows:
• IP address:192.168.10.10
• Subnet mask:255.255.255.0
• Default gateway:0.0.0.0

Remark

3 Function Settings

List of the Environment settings screens
ENV

RS-232C

Setting selection

Program

Panel lock

Active OUT count

Active head count

Active analog output
channel count

LAN setting

3-71

3 Function Settings

Setting the RS-232C communication parameters (RS-232C)
This function is used to set the communication parameters and output operations of the
RS-232C interface.
Refer to "RS-232C" (page 5-1) for details of the RS-232C communication of the LK-G5000
Series.
Function No.

Setting item

Selection item

Remark

Set the data communication
speed.

9600/19200/38400/57600/
115200

Set the type of parity.

None (NON)/Even (EVEN)/Odd
(ODD)

Set the automatic transmission.

OFF/ON

Unit: bps

Changing the RS-232C communication settings

1
2

Press the
key to select the Environment settings (
and then press the ENT key.

Press the
key to select function symbol A (RS-232C, )
and then press the ENT key.

Hold down the SET key.
)

env

abcdef
rs232

Press the
key to select A-B2 (Baud rate: 38400 bps,
) and then press the ENT key.
The setting is saved.

5
6

3-72

Set the parity type and automatic transmission using the
same procedure.
Press the SET key.
The system returns to the measuring status.

a_b2
38400

3 Function Settings

Setting the program switching method (Setting selection)
This function is used to select whether to switch program numbers from the display panel
or from an external terminal input.
Function No.

Setting selection

Function

Panel

Panel operation/LK-Navigator 2/RS-232C/
Expansion unit (CC-Link or DeviceNet)

Terminal input

External terminal input

Setting the program switching method

1
2

Press the
key to select the Environment settings (
and then press the ENT key.

Press the
selection,

Hold down the SET key.
)

key to select function symbol B (Setting
) and then press the ENT key.

env

abcdef
change

Press the
the ENT key.

key to select B-0 (Panel,

The setting is saved.

Press the SET key.

) and then press

b_0
panel

The system returns to the measuring status.

NOTE
To switch program numbers by using the command for the RS-232C interface, CC-Link, or DeviceNet,
set this setting to "Panel operation".

3-73

3 Function Settings

Copying/initializing the program (Program)
This function is used to copy or initialize a program.
Function No.

Operation

Function

Copy

Copy a program by specifying the source program number and
destination program number.

Initialization

Initialize a program by specifying the program number of the
program.

Copying a program

1
2

Press the
key to select the Environment settings (
and then press the ENT key.

Press the
key to select function symbol C (Program, )
and then press the ENT key.

Hold down the SET key.
)

env

abcdef
prg

Press the
the ENT key.

key to select C-0 (Copy,

) and then press

c_0
copy

Press the
key to select the source program number
and then press the ENT key.
In this example, Program No. 1 is specified as the source
program.

from

Press the
key to select the destination program
number and then press the ENT key.
In this example, Program No. 2 is specified as the destination
program.

3-74

2
to

3 Function Settings

Confirm the source and destination program numbers and
then press the ENT key.
The program is copied.
To cancel copying, press the SET key instead.

1_ 2
go

Press the SET key.
The system returns to the measuring status.

Initializing a program

1
2
3

Press the
key to select the Environment settings (
and then press the ENT key.

Press the
key to select function symbol C (Program, )
and then press the ENT key.

Select the program number to be initialized.
Hold down the SET key.
)

env

abcdef
prg

Press the
key to select C-1 (Initialization,
press the ENT key.

) and then

In this example, Program No. 3 is specified as the program to
be initialized.

Confirm the program number and then press the ENT key.

Press the SET key.

The program is initialized.
To cancel the initialization, press the SET key instead.

The system returns to the measuring status.

c_1
erase
prg_3
go

3-75

3 Function Settings

Preventing erroneous panel operation (Panel lock)
This function is used to prohibit operations from the display panel. Erroneous operations
can be prevented even if an operation key is accidentally touched.
Function No.

Panel lock

Function

OFF

Enables key operations from the display panel.

Disables key operations from the display panel.

NOTE
When the panel is locked, all operations other than canceling the panel lock function are disabled.

Setting the panel lock

1
2

Press the
key to select the Environment settings (
and then press the ENT key.

Press the
key to select function symbol D (Panel lock,
) and then press the ENT key.

Hold down the SET key.
)

env

abcdef
lock

Press the
the ENT key.

key to select D-1 (ON,

The setting is saved.

) and then press

d_1
on

3-76

3 Function Settings

Canceling the panel lock

Press and hold the SET key for two seconds or more.

d_1

The panel lock setting screen is displayed.

2
3

Press the
the ENT key.

key to select D-0 (OFF,

) and then press

d_0

Press the SET key.
The panel lock is canceled and the system returns to the
measuring status.

off

3-77

3 Function Settings

Specifying the number of OUT to be used (Active OUT count)
This function is used to set the number of OUT to be used.
NOTE

When you change the active head count or active OUT count in the Environment settings, all the
settings of the LK-G5000 Series except for the Environment settings are reset. When you connect
the LK-HA100 head expansion unit(s) and add a sensor head(s), be sure to specify the active head
count and active OUT count before changing the other measurement settings.

Changing the value of the active OUT count

1
2

Press the
key to select the Environment settings (
and then press the ENT key.

Press the
key to select function symbol E (Active OUT
count, ) and then press the ENT key.

Hold down the SET key.
)

env

abcdef
o_cnt

Press the
key to select the value of the active OUT
count and then press the ENT key.
A confirmation screen is displayed.

e_00
2

To change the value of the active OUT count to this value,
press the
key, select "
", and then press the ENT
key.
The setting is saved.
To cancel the change, select "

3-78

Press the SET key.
The system returns to the measuring status.

yes
no

3 Function Settings

Specifying the number of sensor heads to be used (Active head count)
This function is used to set the number of sensor heads to be used.
NOTE
When you change the active head count or active OUT count in the Environment settings, all the
settings of the LK-G5000 Series except for the Environment settings are reset. When you connect
the LK-HA100 head expansion unit(s) and add a sensor head(s), be sure to specify the active head
count and active OUT count before changing the other measurement settings.

Changing the value of the active head count

1
2

Press the
key to select the Environment settings (
and then press the ENT key.

Press the
key to select function symbol F (Active head
count, ) and then press the ENT key.

Hold down the SET key.
)

env

abcdef
h_cnt

Press the
key to select the value of the active head
count and then press the ENT key.
A confirmation screen is displayed.

f_00
2

To change the value of the active head count to this value,
press the
key, select "
", and then press the ENT
key.
The setting is saved.
To cancel the change, select "

yes
no

Press the SET key.
The system returns to the measuring status.

3-79

3 Function Settings

Specifying the number of analog output channels (Active analog output channel count)
This function is used to set the number of analog output channels to be used.

Changing the value of the active analog output channel count

1
2
3

Hold down the SET key.
Press the
key to select the Environment settings (
and then press the ENT key.

)

Press the
key to select function symbol G (Active
analog output channel count, ) and then press the ENT
key.

env

gh
ao_cnt

Press the
key to select the value of the active analog
output channel count and then press the ENT key.
The setting is saved.

3-80

Press the SET key.
The system returns to the measuring status.

g_00
2

3 Function Settings

Setting the necessary information to connect to a network (LAN setting)
This function is used to set the necessary information to connect to a PC through Ethernet
(such as the IP address, subnet mask, and default gateway of the LK-G5000 Series).
Function No.

LAN setting

Function

IP address

Specify the IP address of the LK-G5000 Series using the four fields
of field 0 to field 3.
The format of "[Field 0].[Field 1].[Field 2].[Field 3]" should be used.

Subnet
mask

Specify the subnet mask of the LK-G5000 Series using the four
fields of field 0 to field 3.

Default
gateway

Specify the default gateway of the LK-G5000 Series using the four
fields of field 0 to field 3.

Setting the network information

1
2

Press the
key to select the Environment settings (
and then press the ENT key.

Press the
key to select function symbol H (LAN setting,
) and then press the ENT key.

Hold down the SET key.
)

env

gh
lan

Press the
key to select H-0 (IP address,
press the ENT key.

) and then

The input screen for field 0 is displayed.

h_0
ipadr

Use the
and
keys to set field 0 of the IP address to
be assigned to the LK-G5000 Series and then press the
ENT key.

Set fields 1 to 3 in the same manner and then press the
ENT key.

192
a_fld0

The setting is saved.

3-81

3 Function Settings

7
8
3

3-82

Set the subnet mask (
steps 4 to 6.

) and default gateway (

Press the SET key.
The system returns to the measuring status.

) in the same manner as in

I/O terminals

This chapter describes the I/O terminal specifications and timing
diagrams.

Names and functions of the I/O terminals ............................ 4-2
Timing diagrams ................................................................. 4-15

4-1

4 I/O terminals

Names and functions of the I/O terminals
This section describes the names and functions of the I/O (input/output) terminals of the LK-G5000
Series provided in the 12-pin terminal block, 6-pin terminal block, and expansion connector.

Function of the I/O terminals
This section includes an overview and functions of the I/O terminals.

12-pin terminal block

-G

(V)
(A)
R ON

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

0V
ET

EA
2 H

COM IN

(V)
(A)

RS-

EA
1 H

LAY

DISP

LASER 1

TIMING 1 ZERO 1

0V
1

12
11
10
9
8
7
6
5
4
3
2
1

DC 24V

The 12-pin terminal block is used for the general comparator output and control input.
Applicable cable specification: AWG 28 to 16, Cable preparation: The cable should be
stripped to 6.5 mm from the end.

Terminal No.

Signal name

Description

COM_IN

COM for input

REMOTE

Laser remote interlock input

Non-voltage input

ZERO1

Auto-zero (synchronous) input

RESET1

Reset (synchronous) input

Non-voltage input (NPN type)
Voltage input (PNP type)

TIMING1

TIMING (synchronous) input

COM_OUT

COM for output

General comparator output

ALARM

System alarm or measured value
alarm

5
4

LASER_CTRL1

Laser control input 1

LASER_CTRL2

Laser control input 2

24 VDC (+)

24 VDC input for power supply

24 VDC (-)

0 V input for power supply

Non-voltage input 2 (NPN type)
Voltage input 2 (PNP type)

NPN open-collector output (NPN type)
PNP open-collector output (PNP type)
Non-voltage input (NPN type)*1
Voltage input (PNP type)*1

*1 When the laser class 3B sensor head is connected, the laser emission is activated when this
terminal is short-circuited. When the laser class 1, 2 or 3R sensor head is connected, the laser
emission is activated when this terminal is opened.

4-2

4 I/O terminals
CAUTION
• Precautions on wiring:
Parts of the input/output circuits of the LK-G5000 Series are common internally. Be careful that no
potential difference is generated between the internally common terminals due to the potential
difference between the cables/external devices. Refer to "Precautions on wiring" (page -7) for
details.
• NPN type:
The 24 VDC (-), COM OUT, and COM IN terminals are common through choke coils. They are also
common with 0 V of the 6-pin terminal block and COM of the expansion connector through choke
coils. Be careful of the potential difference being generated among these terminals.
• PNP type:
The 24 VDC (-) and COM IN terminals are common through choke coils. These terminals are also
common with 0 V of the 6-pin terminal block and COM IN of the expansion connector through choke
coils. Be careful of the potential difference being generated among these terminals. The COM OUT
terminals of the 12-pin terminal block and the expansion connector are common.
• The 24 VDC (-) terminal and the SG (GND) terminal of the RS-232C connector are common through
choke coils.
Be careful of the potential difference being generated among these terminals.

Reference
• Refer to "Electrical specifications for the NPN type models" (page 4-12) for details about the
electrical specifications.
• Refer to "Timing diagrams" (page 4-15) for details about the timing diagram.

4-3

4 I/O terminals

6-pin terminal block
The 6-pin terminal block is used for analog monitor output.
Applicable cable specification: AWG 28 to 16, Cable preparation: The cable should be
stripped to 6.5 mm from the end.

6
-G

(V)

(A)
R ON

0V
1

(V)

(A)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

0V
2
ET

EA
2 H

COM IN

RS-

2
1

EA
1 H

LAY

DISP

DC 24V

LASER 1

TIMING 1 ZERO 1

Terminal No.

Signal name

Description

OUT01 (V)

Analog voltage output of OUT01
Voltage output within the range of ±10.5 V proportional to the displayed
value

OUT01 (A)

Analog current output of OUT01
Current output within the range of 3.6 mA to 20.4 mA proportional to the
displayed value

OUT01 0 V

0 V terminal of OUT01

OUT02 (V)

Analog voltage output of OUT02
Voltage output within the range of ±10.5 V proportional to the displayed
value

OUT02 (A)

Analog current output of OUT02
Current output within the range of 3.6 mA to 20.4 mA proportional to the
displayed value

OUT02 0 V

0 V terminal of OUT02

*The 0 V terminals No. 1 and No. 4 are common.

NOTE
The 0 V terminal of the 6-pin terminal block and 24 VDC (-) terminal of the 12-pin terminal block are
common through choke coils. Be careful of the potential difference being generated among these
terminals.

Reference
• Refer to "Electrical specifications for the NPN type models" (page 4-12) for details about the
electrical specifications.
• Refer to "Scaling the analog output (Analog scaling)" (page 3-50) for details about the analog output
scaling.

4-4

4 I/O terminals

Expansion connector
The expansion connector is used for the comparator output for OUT02, control input, and
binary output.
Applicable connector: FX2B Series (HIROSE Electric Co., Ltd.)
A 3-m expansion connector cable (OP-51657) is available ("List of Optional Accessories"
(page A-7)).

1
-G

(V)
(A)
R ON

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

EA
2 H

COM IN

(V)
(A)

2
RN

RS-

EA
1 H

LAY

DISP

DC 24V

LASER 1

TIMING 1 ZERO 1

0V
1

Terminal
No.

Signal name

Description
Comparator output

Cable
Binary value output Circuit (page 4-12) color

COM_IN

COM for input

Brown

Program No. switch input

Orange

B_IN1

B_IN2

B_IN3

B_IN4

B_OUT1

B_OUT2

B_OUT3

B_OUT4

ZERO

Auto-zero input (binary selection)

RESET

RESET input (binary selection)

TIMING

TIMING input (binary selection)

Non-voltage input 2
(NPN type)
Green
Voltage input 2
(PNP type)

DEC_IN

Binary selection confirmation input

Non-voltage input
(NPN type)
Voltage input
(PNP type)

Red

Non-voltage input
(NPN type)
Voltage input
(PNP type)
Binary selection input

Yellow
Green
Blue
Purple
Gray

Binary selection output

White
NPN open-collector
Black
output (NPN type)
PNP open-collector Brown
output (PNP type)
Red
Non-voltage input
(NPN type)
Voltage input
(PNP type)

Orange
Yellow

Blue

4-5

4 I/O terminals

Terminal
No.

4-6

Signal name

Description
Comparator output

Cable
Binary value output Circuit (page 4-12) color
NPN open-collector
output (NPN type)
Purple
PNP open-collector
output (PNP type)

DEC_OUT

Binary selection confirmation output

COM_OUT

COM for output

STROBE

Strobe output

OUT1
OUT1 (8) HI/binary
comparator
(0) (LSB)
HI output

OUT8
comparator
HI output

Binary (0)
output (LSB)

OUT1 (8) GO/
binary (1)

OUT1
comparator
GO output

OUT8
comparator
GO output

Binary (1)
output

Brown

OUT1
OUT1 (8) LO/binary
comparator
(2)
LO output

OUT8
comparator
LO output

Binary (2)
output

Red

OUT2
OUT2 (9) HI/binary
comparator
(3)
HI output

OUT9
comparator
HI output

Binary (3)
output

Orange

OUT2 (9) GO/
binary (4)

OUT2
comparator
GO output

OUT9
comparator
GO output

Binary (4)
output

Yellow

OUT2
OUT2 (9) LO/binary
comparator
(5)
LO output

OUT9
comparator
LO output

Binary (5)
output

Green

OUT3 (10) HI/
binary (6)

OUT3
comparator
HI output

OUT10
comparator
HI output

Binary (6)
output

Blue

OUT3 (10) GO/
binary (7)

OUT3
comparator
GO output

OUT10
comparator
GO output

Binary (7)
output

Purple

OUT3 (10) LO/
binary (8)

OUT3
comparator
LO output

OUT10
comparator
LO output

Binary (8)
output

Gray

OUT4 (11) HI/
binary (9)

OUT4
comparator
HI output

OUT11
comparator
HI output

Binary (9)
output

White

OUT4 (11) GO/
binary (10)

OUT4
comparator
GO output

OUT11
comparator
GO output

Binary (10)
output

Black

OUT4 (11) LO/
binary (11)

OUT4
comparator
LO output

OUT11
comparator
LO output

Binary (11)
output

Brown

OUT5 (12) HI/
binary (12)

OUT5
comparator
HI output

OUT12
comparator
HI output

Binary (12)
output

Red

OUT5 (12) GO/
binary (13)

OUT5
comparator
GO output

OUT12
comparator
GO output

Binary (13)
output

Orange

Gray
NPN open-collector White
output (NPN type)
PNP open-collector
output (PNP type) Black

4 I/O terminals

Terminal
No.

Signal name

Description
Comparator output

Cable
Binary value output Circuit (page 4-12) color

OUT5 (12) LO/
binary (14)

OUT5
comparator
LO output

OUT12
comparator
LO output

Binary (14)
output

OUT6 HI/
binary (15)

OUT6
comparator
HI output

Not used
(OFF)

Binary (15)
output

Green

OUT6 GO/
binary (16)

OUT6
comparator
GO output

Not used
(OFF)

Binary (16)
output

Blue

OUT6 LO/
binary (17)

OUT6
comparator
LO output

Not used
(OFF)

Binary (17)
output

Purple

OUT7 HI/
binary (18)

OUT7
comparator
HI output

Not used
(OFF)

Binary (18)
output

Gray

OUT7 GO/
binary (19)

OUT7
comparator
GO output

Not used
(OFF)

Binary (19)
output

White

OUT7 LO/
binary (20) (MSB)

OUT7
comparator
LO output

Not used
(OFF)

Binary (20)
output (MSB)

Black

NPN open-collector
output (NPN type) Yellow
PNP open-collector
output (PNP type)

• The cable colors represent the wire colors of the expansion connector cable (OP-51657).
• The signal functions of terminal numbers 20 to 40 vary depending on the binary selection input
through terminal numbers 5 to 8.

CAUTION
• Precautions on wiring:
Parts of the input/output circuits of the LK-G5000 Series are common internally. Be careful that no
potential difference is generated between the internally common terminals due to the potential
difference between the cables/external devices. Refer to "Precautions on wiring" (page -7) for
details.
• NPN type:
The COM OUT and COM IN terminals are common through choke coils. They are also common with
the 24 VDC (-), COM OUT and COM IN terminals of the 12-pin terminal block through choke coils.
Be careful of the potential difference being generated among these terminals.
• PNP type:
The COM IN and 24 VDC (-) terminals are common through choke coils. They are also common with
the 24 VDC (-) and COM IN terminals of the 12-pin terminal block through choke coils. Be careful of
the potential difference being generated among these terminals. The COM OUT terminals of the
expansion connector and 12-pin terminal block are common.

4-7

4 I/O terminals

Functions of the I/O Signals
This section describes the functions of the I/O (input/output) signals. Refer to "Names and
functions of the I/O terminals" (page 4-2) for details about the layout of the individual
terminals.

Comparator output
Name

Tolerance comparator
output
(OUT HI, OUT GO, OUT
LO)

Description

Reference page

Outputs the tolerance comparator result of the corresponding
OUT when the binary selection input is set to select the
comparator output.

Description

Reference page

Alarm output
Name
Alarm (N.C.) output
(ALARM)

Outputs an alarm of the type specified with the "Alarm output
type" (system alarm or measured value alarm).

page 3-68

Measurement control input/output
Name

Description

Reference page

TIMING input (TIMING)

Inputs a synchronous signal to the OUT selected with the
binary selection input. *1

RESET input (RESET)

Resets the measured value of the OUT selected with the binary
selection input. *1

TIMING1 input (TIMING1) Inputs a synchronous signal to the synchronized OUT.

RESET1 input (RESET1)

Resets the measured value of the synchronized OUT.

*1 This input is valid when the binary selection input is set to select the binary output and the binary
selection confirmation input is turned on. The input is not accepted when the binary selection input
is set to select the comparator output or the binary selection confirmation input is turned off.

Auto-zero input
Name

Description

Reference page

ZERO input (ZERO)

Sets the current measured value of the OUT selected with the
binary selection input to 0 (zero). *1

ZERO1 input (ZERO1)

Sets the current measured value of the synchronized OUT to 0.

4-8

4 I/O terminals

General comparator output
Name
General comparator
output (GO)

Description

Reference page

Outputs a signal when GO output is the result for all OUTs
specified with the available OUT count which are not in the
comparator standby status.

Program No. switch input
Name
P1, P2, P3

Description

Reference page

Changes the program No. from an external device.

page 4-5

The relationship between the program numbers and the statuses of the P1 to P3 terminals
is as follows.
Program No.

P1
OFF

OFF

Status

NPN type

PNP type

Short-circuited with the COM terminal

Voltage being applied

OFF

Open

Reference
To change the program number with the I/O terminals, you need to change the "Setting selection" of
the Environment settings to "Terminal input" (page 3-73).

4-9

4 I/O terminals

Binary selection input/output
Name

Description

Reference page

Binary selection input
(B_IN1 to B_IN4)

Changes the range of the comparator output or the OUT No.
for the binary output.

Binary selection output
(B_OUT1 to B_OUT4)

Outputs the data provided from the comparator/binary output
terminal.

Binary selection
confirmation input
(DEC_IN)

When turned on, applies the TIMING input, RESET input, and
ZERO input to the selected OUT.

Binary selection
confirmation output
(DEC_OUT)

Outputs a signal when the binary selection confirmation input
is turned on.

The statuses of the binary selection input/output (B_IN1 to B_IN4) are as follows.
Output data

B_IN4
B_IN3
B_IN2
B_IN1
B_OUT4 B_OUT3 B_OUT2 B_OUT1

Comparator output OUT1 to OUT7

OFF

OUT1 binary output

OFF

OFF
ON

OUT2 binary output

OFF

OUT3 binary output

OFF

OUT4 binary output

OFF

OUT5 binary output

OFF

OUT6 binary output

OFF

OUT7 binary output

OFF

OUT8 binary output

OFF

OUT9 binary output

OFF

OUT10 binary output

OFF

OUT11 binary output

OFF

OUT12 binary output

OFF

Comparator output OUT1 to OUT7

OFF

Comparator output OUT1 to OUT7

OFF

Comparator output OUT8 to OUT12

4-10

4 I/O terminals

Binary output
Name

Description

Binary output

Outputs the measured value as binary data (21 bits).
A negative value is represented as a two's complement number.
Negative logic is used ("1" when the NPN or PNP open-collector output
is turned on).
Comparator standby status (All digits are shown with "-"): 0 x 100000
Over range on the positive side: 0 x 0FFFFF
Over range on the negative side: 0 x 100000
Alarm: 0x100000

Reference page

page 4-5
page 4-12

STROBE output

Strobe output for binary output

page 4-5

 Binary output indication
The LK-G5000 Series outputs the measured value as a binary number (two’s complement)
of 21 bits. The decimal point is ignored.
• Example 1: When the measured value is "+134.97"
13497 (decimal)  0 0000 0011 0100 1011 1001 (binary)
• Example 2: When the measured value is "-134.97"
-13497 (decimal)  1 1111 1100 1011 0100 0111 (binary)

LASER CTRL input
Name

Reference
page

Description
Controls the lasers for each group specified as LASER CTRL group. The
operation depends on the laser class of the sensor head.
"LASER CTRL1" controls LASER CTRL group 1, and "LASER CTRL2" controls
LASER CTRL group 2.
When only the laser class 1, 2 or 3R
sensor head is used

LASER CTRL
input

When the laser class 3B sensor head
(LK-H023/LK-H028/LK-H053/LKH058) is used

• NPN output type: The laser beam
• NPN output type: The laser beam
emission stops when the LASER
emission starts when the LASER
CTRL1/2 and COM IN terminals are
CTRL1/2 and COM IN terminals are
short-circuited.
short-circuited with the key• PNP output type: The laser beam
operated switch.
emission stops when voltage is
• PNP output type: The laser beam
applied to the section between the
emission starts when voltage is
LASER CTRL1/2 and COM IN
applied to the section between the
terminals.
LASER CTRL1/2 and COM IN
terminals with the key-operated
switch.

page 3-20
page 4-2
page 4-12
page A-11

Laser remote interlock input
Name

REMOTE

Description

Reference page

This is the laser remote interlock terminal. The laser beam is
emitted when this terminal is short-circuited with COM. The
emission is stopped when this terminal is open. This terminal is
common to sensor heads A and B. This input overrides the
LASER OFF input.

page 4-2

4-11

4 I/O terminals

Electrical specifications for the NPN type models
CAUTION
Be sure to read "Precautions on wiring" (page -7) before wiring.

 Non-voltage input
+5 V

+5 V

Internal circuit

2.2 kΩ
1 kΩ
Input

1 V max.

OFF current

0.6 mA max.

Short-circuit current (Typical)

2 mA

Input

Input
or

COM

 Non-voltage input 2 (TIMING/TIMING1)

Internal circuit

+14 V

330 Ω
1.6 kΩ
TIMING

ON voltage

5 V or less

OFF current

1 mA max.

Short-circuit current
(Typical)

8 mA

Input

Input
or

COM

COM
for input

COM

Compatible with the DC 2-wire model
of the Keyence EV Series proximity
sensor.
 NPN open-collector output
Maximum applied voltage

+5 V
Internal circuit

COM
for input

ON voltage

4-12

Output
4.7 kΩ
10 kΩ
1 kΩ
COM
for output

40 V

Maximum sink current

50 mA

Residual voltage

0.5 V max.

Leakage current

0.1 mA max.

4 I/O terminals

Electrical specifications for the PNP type models
CAUTION
Be sure to read "Precautions on wiring" (page 7) before wiring.

 Voltage input
Maximum input voltage rating 26.4 V

Input
1.5 kΩ
COM
for input

Internal circuit

+5 V
4.7 kΩ

ON voltage

10.8 V min.

OFF current

0.6 mA max.

Short-circuit current (Typical)

2 mA

Input

Input
or

COM

 Voltage input 2 (TIMING/TIMING1)
Maximum input voltage rating 26.4 V

Internal circuit

3.9 kΩ
TIMING
680 Ω
COM
for input

ON voltage

10.8 V min.

ON current (Typical)

3 mA

OFF voltage

5 V max.

OFF current

1 mA max.

Maximum applied voltage

30 V

 PNP open-collector output
+5 V
Internal circuit

10 kΩ

COM
for output

10 kΩ

Maximum source current

50 mA

Residual voltage

0.5 V max.

Leakage current

0.1 mA max.

Output

4-13

4 I/O terminals

Electrical specifications common to the NPN and PNP type models
 Analog voltage output/analog current output

Internal circuit

47 Ω

Current output
Voltage output

Voltage output

Current output
3.36 to 20.64 mA
(Measured data: 3.6 to 20.4
mA)

±10.8 V
(Measured data: ±10.5 V)

Output range

Resolution

2 mV

Resolution

40 μA

Accuracy

±0.05% of F.S.
(F.S. = 20 V, accuracy with
reference to
the displayed value)

Accuracy

±0.25% of F.S.
(F.S. = 16 mA, accuracy with
reference to
the displayed value)

Output
impedance

Approx. 100 

Applicable load

350  max.

Output range

Response delay Approx. 1.5 μs (after the
time
measured value is updated)

4-14

Response delay Approx. 10 μs (after the
time
measured value is updated)

4 I/O terminals

Timing diagrams
This section describes the timing of the I/O signal operations.

Normal
T5

Comparator output
Binary output

ON
OFF
ON
OFF
T6/2

STROBE output

T6/2

OFF
T1 min.

TIMING/
TIMING1 input

T6/2

T1 min.

ON
OFF
T1 min.
T2 max.

RESET/RESET1/
ZERO/ZERO1 input
P1 to P3 input

T2 max.
T1 min.

OFF
T2 max.
ON

Min

T1 min.

OFF
T7 max.

• The minimum input time (T1), input response time (T2), RESET time (T4), refresh cycle
(T5), sampling cycle (T6), and program No. change time (T7) vary depending on the
settings (page 4-26).
• When the sampling cycle (T6) is 20 μs or less, the STROBE output’s T6 is fixed to 20 μs.
• Auto-zero is canceled when the ZERO input is turned on for two seconds or more.

4-15

4 I/O terminals

Peak hold/bottom hold/peak-to-peak hold/average hold/sample hold
(Trigger 1)
Comparator output
Binary output

ON
OFF
ON
OFF
0.2 ms

STROBE output

ON
OFF
Min

T1 min.

TIMING/
TIMING1 input

RESET/RESET1/
ZERO/ZERO1 input

OFF
T1 min.

T2 max.
OFF

When Trigger 1
is selected

Sampling period

When Trigger 2
is selected
P1 to P3 input

T1 min.

T2 max.

Sampling
period

T2 max.

Min
T1

T1 min.

ON
OFF
T7 max.

• The minimum input time (T1), input response time (T2), RESET time (T4), and program
No. change time (T7) vary depending on the settings (page 4-26).
• The STROBE time (T3) can be changed (page 3-64).
• Auto-zero is canceled when the ZERO input is turned on for two seconds or more.
• The internal measured value of the RESET input is determined after the RESET time (T4)
has elapsed.

4-16

4 I/O terminals

Sample hold (Trigger 2)
Comparator output
Binary output

ON
OFF
ON
OFF
0.2ms

STROBE output

ON
OFF
Min

TIMING/
TIMING1 input

RESET/RESET1/
ZERO/ZERO1 input

T1 min.

OFF
T2 max.

Sampling

T1 min.

period (T4)
OFF
T2 max.

P1 to P3 input

T1 min.

ON
OFF
T7 max.

• The TIMING input ON signal is used as a trigger and the measured value is determined
after the sampling period (T4) has elapsed.
• The minimum input time (T1), input response time (T2), sampling period (T4), and
program No. change time (T7) vary depending on the settings (page 4-26).
• The STROBE time (T3) can be changed (page 3-64).
• Auto-zero is canceled when the ZERO input is turned on for two seconds or more.
• If the RESET input or ZERO input is turned on during the sampling period, the sampling
stops and the comparator standby status starts.

4-17

4 I/O terminals

General comparator output GO
HI

OUT1
LO

OUT2
LO

4
HI

OUT3
LO

When the comparator output form is
Normal
ON

OUT1

GO output

OUT2

GO output

OUT3

GO output

General
comparator
output GO

GO output

OFF
ON
OFF
ON
OFF
ON
OFF

When the comparator output form is
Off-delay

60 ms
60 ms

60 ms

OUT1

GO output

OUT2

HI output

OUT2

GO output

OUT3

GO output

General
comparator
output GO

GO output

OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF

• The general comparator output GO turns on when GO outputs are turned ON for all OUTs
which are not in the comparator standby status.
• Since the output is affected by the comparator output form setting, the general comparator
output GO may be output when the HI or LO output is turned on for some OUT (page 3-63).

4-18

4 I/O terminals

Binary output
 BINARY (Normal mode)
OUT1
Measured value
OUT1

BINARY

OUT1

T6/2

STROBE output

OUT1

T6/2

ON
OFF

• When the sampling cycle (T6) is 20 μs or less, the STROBE output’s T6 is fixed to 20 μs.

 BINARY (Measurement mode with Trigger 1 selected)
TIMING (TIMING 1)

ON
OFF
T1 min. T1 min.

OUT1
Measured value
BINARY
T2 max.
0.2 ms

STROBE output

T2 max.
Less than T3

0.2 ms

ON
OFF

 BINARY (Measurement mode other than the sample hold with Trigger 2 selected)
TIMING (TIMING1)

ON
OFF
T1 min. T1 min. T2 max.

T2 max.

OUT1
Measured value
BINARY

Max. T2 + T4 + Sampling period
0.2 ms
Less than T3

STROBE output

Max. T2 + T4 + Sampling period
0.2 ms

ON
OFF

4-19

4 I/O terminals
 BINARY (Sample hold with Trigger 2 selected)
TIMING (TIMING1)
T1 min. T1 min.
Measurement is reset.

OUT1
Measured value
BINARY
T2 max.

T4
T2 max.

T2 max.

T4
T2 max.

T4
0.2 ms

STROBE output

ON
OFF

• After the synchronous signal turns ON and before the strobe output is turned on, if the
synchronous input turns ON again, the internal measured value will be reset, and the
strobe signal will turn ON after a period of "MaxT2 + T4 + 0.2 ms" has elapsed.

4-20

4 I/O terminals
 B_IN, B_OUT
OUT1
Measured value
TIMING

Alarm value
ON
OFF

T2 max.

OUT2
Measured value

Alarm value

B_IN

OUT1

OUT2

OUT1

B_OUT

OUT1

OUT2

OUT1

T1 max.

OUT1
Alarm value

BINARY

OUT1

T6/2

STROBE output

T6/2

T1 max.

OUT2

0.2ms

OUT1

ON
OFF

Alarm output (NC)
When the measured
value alarm is set
ON (Output is open)
OFF (Output is short-circuited)

• This timing diagram shows an example for settings other than OUT1: Normal, OUT2:
Normal, or Sample hold with Trigger 2 selected.
• The OUT which is set with the B_IN input can be selected for binary output.
• The OUT No. which is providing the current binary output can be checked with the
B_OUT output.
• The binary data should be imported in synchronization with the strobe signal being
turned on.
• The minimum input time (T1), input response time (T2) and refresh cycle (T5) vary
depending on the settings.
• The STROBE time (T3) can be changed.
• When the sampling cycle (T6) is 20 μs or less, the STROBE output’s T6 is fixed to 20 μs.
• In any of the measurement modes, when the BINARY output is switched while strobe
output is turned on, the binary output is turned off even in less than T3.
• In the normal mode, the BINARY output is switched at the timing when strobe output is
turned off.
• The alarm output uses a normally-closed contact.

4-21

4 I/O terminals
 DEC_IN
DEC_IN

ON
OFF
T1 max.

DEC_OUT

T1 max.

ON
OFF
0 µs min.

TIMING/
ZERO/RESET

ON
OFF

B_IN

OUT1
T1 max.

B_OUT

OUT2
T1 max.

OUT1

OUT2

• When DEC_OUT is off, TIMING/ZERO/RESET is ignored.
• When B_IN specifies the comparator output, TIMING/ZERO/RESET is ignored.
• When synchronized OUT is selected, ZERO/RESET can be input but TIMING is not
accepted.
• To switch the B_IN signal, turn OFF the DEC_IN signal, then switch the B_IN signal, and
then turn DEC_IN ON again after confirming that B_OUT has been switched.
• When DEC_IN is turned on while TIMING (ZERO/RESET) is on, this input is applied to
the OUT specified after DEC_IN is turned on.

4-22

4 I/O terminals
 External synchronization for data storage, RS-232C automatic transmission
The STROBE output type depends on the synchronization setting.
• When the measurement mode for synchronized OUT is not sample hold (Trigger 2):
T1 min. T1 min.

TIMING1

T2 max.

ON
OFF
T2 max.

STROBE
(in Normal mode)

ON
OFF

Data storage
RS-232C
automatic transmission

T2 + 2 ms

After TIMING1 is input and the input response time (T2) has elapsed, data storage (RS232C automatic transmission) is performed.
• When the sample hold (Trigger 2) is selected as the measurement mode for some of the
synchronized OUTs:
– The STROBE output method is decided by the smallest OUT No. among the OUTs
selected for synchronization control. (For example, when all of OUT1 to OUT12 are
set for synchronization control and comparator outputs 8 to 12 are selected with B_IN,
the smallest OUT No. is "OUT1", regardless of the B_IN input.)
– If comparator output is selected with B_IN and synchronization control is not set,
STROBE output is disabled.
T1 min. T1 min.

TIMING1

T2 max.

ON
OFF

B_IN set to comparator output:
When OUT of the smallest number is
set to Normal mode
ON
STROBE OFF
B_IN set to comparator output:
When OUT of the smallest number is
set to measurement mode except for
sample hold (trigger 2)
ON
STROBE OFF
B_IN set to comparator output:
When OUT of the smallest number is
set to sample hold (trigger 2) and
measurement periods vary among OUTs
ON
STROBE OFF

0.2 ms

T4
Measurement period
for OUT of the smallest
number

0.2 ms
T2 max.

Data storage

T4
The longest measurement period
among the synchronized OUTs

RS-232C
automatic transmission
T2 + T6 + 2 ms

4-23

4 I/O terminals
 TIMING signal interval for the RS-232C automatic transmission
T1 min. T1 min.

TIMING1

T1 min. T1 min.

ON
OFF
Data is not sent.

RS-232C
automatic transmission

T2+2ms*

Transmission period

T2 + 2 ms*

* This period will be T2 + T4 + 2 ms when the "sample hold (Trigger 2)" is selected as the
measurement mode for some of the synchronized OUTs.

• Even when the next data is determined during the automatic transmission, the data is
not sent.
 Refresh timing during high-speed sampling
+FFFFFF

Measured value

HI
LO

---- display

-FFFFFF

Internal tolerance
comparator result
HI

ON
OFF

BINARY

OFF
Comparator standby

0 x 100000
Comparator standby

Alarm display

0x100000
Alarm

STROBE
I/O refresh cycle

• The operations when the sampling cycle is shorter than the I/O refresh cycle are as
follows:
• If all comparator results are GO in one refresh cycle, GO turns on at the next refresh.
• If at least one comparator result is HI (LO) in one refresh cycle, HI (LO) turns on at the
next refresh.
• If both HI and LO exist in one refresh cycle, both HI and LO turn on at the next refresh.
• Binary output is updated to the latest value in every refresh cycle.
• The I/O refresh cycle depends on the sampling cycle and mutual interference
prevention setting.

4-24

4 I/O terminals

LASER REMOTE/LASER CTRL1/2
ON

REMOTE
OFF

LASER CTRL1(2)
When laser class
3B sensor head is
not used
LASER CTRL1(2)
When laser class
3B sensor head
is used

OFF

Emit

Laser emission
Stop

Measured value

Measurement

Alarm

Measurement

• T8 is the laser control emission response time and T9 is the laser control measurement
response time (page 4-26).
• The REMOTE input turns on when opened and turns off when short-circuited.
• The status of LASER CTRL 1/2 is operated as follows:
Status

NPN type

PNP type

Short-circuited with
the COM terminal

Voltage applied

OFF

Open

4-25

4 I/O terminals

Timing details
 Minimum input time (T1), input response time (T2), and refresh cycle (T5)
I/O refresh cycle
Sampling
cycle (T6)

Minimum
input time
(T1)

Input
response
time (T2)

Laser control
emission
response
time (T8)

Laser control
measurement
response
time (T9)

Mutual
interference
prevention
function:
OFF

Mutual
interference
prevention
function: ABON/ABC-ON

2.55 μs

1000 μs +
T6 x 131

T6 x 139
+ 50 μs

T6 x 8

T6 x 4

5 μs

1000 μs +
T6 x 67

T6 x 75
+ 50 μs

T6 x 4

T6 x 2

T6 x 43
+ 50 μs

T6 x 2

10 μs

1000 μs

1000 μs +
T6 x 35

1000 μs

1000 μs +
T6 x 19

20 μs

T6 x 27
+ 50 μs

1000 μs +
T6 x 11

50 μs

T6 x 19
+ 50 μs

100 μs
200 μs
500 μs

1000 μs
+ T6

1000 μs +
T6 x 6
+100 μs

1000 μs
+ T6

T6 x 13
+ 100 μs

T6 x 1
For the
sampling
cycles longer
than 20 μs:
Same as the
value for 20 μs

T6 x 1
For the
sampling
cycles longer
than 10 μs:
Same as the
value for 10 μs

1000 μs

• The sampling cycle can be changed (15).
• When the sampling cycle is changed, the measurement response time, measurement
averaging time, RESET time, and refresh cycle also change accordingly.
• When the mutual interference prevention function is used, the sampling cycle T6 is
calculated as T6 x 2 (for AB_ON) or T6 x 3 (for ABC_ON).
• When "Velocity" is selected for the measurement type, T4 is calculated as T4 + T6; when
"Acceleration" is selected, T4 is calculated as T4 + 2 x T6.

4-26

4 I/O terminals
 Measurement averaging time and RESET time (T4)
Filter

Measurement
averaging time

RESET time (T4)

T6 x 1

T6 x 4

T6 x 16

T6 x 1

T6 x 64

No. of
256
averaging
measurements 1024

T6 x 256

T6 x 1024

4096

T6 x 4096

16384

T6 x 16384

65536

T6 x 65536

262144

T6 x 262144

Low-pass filter

T6 x 12

High-pass filter

T6 x 12

• When the mutual interference prevention function is used, the sampling cycle T6 is
calculated as T6 x 2 (for AB_ON) or T6 x 3 (for ABC_ON).
• When "Velocity" is selected for the measurement type, T4 is calculated as T4 + T6; when
"Acceleration" is selected, T4 is calculated as T4 + 2 x T6.
 Program No. change time (T7)
Program No. change time (T7) = Number of sensor heads connected to the controller x 50 ms
+ Number of sensor heads connected to the head
expansion unit x 110 ms + 5 ms

4-27

4 I/O terminals
MEMO

4-28

RS-232C

This chapter describes how to connect external devices and the
communication functions used for external control.

Specifications ....................................................................... 5-2
Measured Value Output and Changing Settings through
Commands ........................................................................... 5-4
Data Storage Function........................................................ 5-36
Measured Value Output through External Synchronization .... 5-38

5-1

5 RS-232C

Specifications
Pin assignment

-G

(V)
(A)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

R ON

(1)

ET
RN

(2)

EA
2 H

(3)

(4)
2C

COM IN

(V)
(A)

2
1

RS-

EA
1 H

(5)
(6)

LAY

DISP

DC 24V

LASER 1

TIMING 1 ZERO 1

0V
1

Applicable connector specifications: 6-pin modular plug connector
Terminal No.

Terminal name

(Not used)

Description
-

(Not used)

SD (TXD)

Signal reception from an external device
(input)

SG (GND)

GND

RD (RXD)

Signal transmission to an external device
(output)

(Not used)

* Do not use the terminals indicated as "Not used". Using these terminals may lead to product
breakdown.

NOTE
• The SG (GND) and 24 VDC (-) terminals are common through choke coils. Be careful of the potential
difference being generated among these terminals.
• Be sure to read "Precautions on wiring" (page 7) before starting wiring.

5-2

5 RS-232C

Communication parameters
EIA RS-232C compliant (Modem definition)
Transmission method

Full duplex

Synchronization

Start-stop

Transmission code

ASCII

Data length

8 bits

Stop bit length

1 bit

Parity check*

None/even/odd

Baud rate*

9600/19200/38400/57600/115200 bps

Data delimiter

Flow control

None

Refer to "Setting the RS-232C communication parameters (RS-232C)" (page 3-72) for the setting of the
communication parameters.

Communication operations for the measuring status and communication mode

General mode

During measurement The measurement control commands are accepted.
Commands such as writing/reading setting values are not accepted.
During tolerance/
function setting

Communication
mode

Communication is not accepted.
The measurement stops.
• When the command "Q" "0" "CR" is received, the mode changes to
the communication mode, and the setting values are written/read.
• The measurement stops during the communication mode.

NOTE
You need to complete a sequence of command inputs/outputs before shifting from the measuring
status to the tolerance/function setting status.

Setting outline according to external devices
Set the automatic transmission function (page 3-72) as described in the table below
according to the external device to be connected.
External device

Automatic transmission Reference page

Non-procedure communication with
a PC or a PLC link unit
OFF
(Communication commands are
required.)

"Measured Value Output and Changing
Settings through Commands" (page 5-4)

Communication with a PC or a PLC
link unit (Measured values are
ON
output in synchronization with the
external synchronous input.)

"Measured Value Output through External
Synchronization" (page 5-38)

*The operations described in "Measured Value Output and Changing Settings through Commands" are
also valid when the automatic transmission is set to ON.

5-3

5 RS-232C

Measured Value Output and Changing
Settings through Commands
You can import measured values and change parameter settings by connecting the LKG5000 Series to a PC or a PLC link unit.

Connecting a PC/PLC link unit
The connection requires the OP-96368 dedicated cable (2.5-m straight cable) and either
the OP-26401 (D-sub 9-pin) or OP-96369 (D-sub 25-pin) conversion adapter.
Reference
Also refer to the instruction manual for the PC or PLC link unit before starting connection.

Connection diagram
PC side
LK-G side
RD (RXD) (5)
SG (GND) (4)
SD (TXD) (3)

OP-96369

(3)
(7)
(2)
(4)
(5)
(6)
(8)
(20)

OP-26401

(2)
(5)
(3)
(7)
(8)
(6)
(1)
(4)

Signal name
RD (RXD)
SG (GND)
SD (TXD)
RS (RTS)
CS (CTS)
DR (DSR)
CD (DCD)
ER (DTR)

5000
LK-G
(V)
(A)
0V
(V)
(A)
0V
1

5000
LK-G
(V)
(A)
0V
(V)
(A)

PLC link unit

0V
1

NOTE
Be sure to read "Precautions on wiring" (page 7) before starting wiring.

Environment settings parameters
Change the following parameters according to the PC or PLC link unit to be connected
(page 3-72).
Item

Setting value

Baud rate

9600/19200/38400/57600/115200

Parity check

None/even/odd

5-4

Remark
Set the appropriate parameter according to
the external device to be connected.

5 RS-232C

Outline of the command format
The LK-G5000 Series controls operation based on the incoming command received from
the external device, and then sends back the response command to the external device.
CR is used to delimit each piece of data in the incoming/response command format.
Incoming command
Incoming command format

OUT1
HI
GO
LO

LK-HD50

OUT2

TIM

HI
GO
LO

HEAD1
HEAD2

TIM
LASER
LASER ON
ON

STABILITY
STABILITY

PROGRAM

SET

BRIGHT
BRIGHT

DARK
DARK

ZERO

ENT

Response command
Response command format

NOTE
When creating a control program, build it so that you confirm the reception of the response command
from the LK-G5000 Series before sending the next command.

Reference
Both upper-case and lower-case characters can be used in the command.
The presence or absence of the section enclosed with brackets ([ ]) in the command format depends
on the condition.

 Error response command format
The table below lists the major error codes. Refer to "Error Codes" (page A-5) for details.
Response

ER, (Issued command), (Error code) CR

Error code

•
•
•
•
•
•
•

50: Command error
51: Status error
60: Command length error
61: Parameter count error
62: Parameter range error
88: Timeout error
99: Other error

5-5

5 RS-232C

Measured value format (hhhhhhh)
A measured value is output in the format shown below.
Sign

Integer portion

Decimal
point

Fractional
portion

Fixed length data consisting of seven characters in total.
The decimal point is counted as a single character.
The presence/absence and the position of the decimal
point vary depending on the settings.
The measured value is aligned to the right.
Fixed length data of one character and the value is "+" or "–".

The following table provides format examples.
Displayed value

Output format

+01.2345
-00.0120

+1234.56
-00001.2
+000.000
XXXXXXXX
+FFFFFFF
-FFFFFFF

Setting value format (fffffff)
 Setting change format
Fixed length format that consists of one sign and six-digit numerical values. No decimal
point is included.
 Setting confirmation format
Fixed length format that consists of one sign, six-digit numerical value and one decimal
point.

5-6

5 RS-232C

Mode change command
This section describes the command format used to switch between the "General mode"
and "Communication mode".
Reference
Refer to "Communication operations for the measuring status and communication mode" (page 5-3)
for details about the general mode and communication mode.

 Changing to the communication mode
The mode is changed to the communication mode.
Incoming command

Q0 CR

Response command

Q0 CR

Parameter description

Error code

Err-51: Command Q0 was sent when the unit was in the communication
mode.

 Changing to the general mode
The mode is changed to the general mode.
Incoming command

R0 CR

Response command

R0 CR

Parameter description

Error code

Err-51: Command R0 was sent when the unit was in the general mode.
Err-63: The repeated use of an OUT value in calculation exceeds the limit.
Err-65: The calculation method parameter does not satisfy the requirements
of the setting list. (OUT for velocity/acceleration was set for OUT calculation;
or an item other than the sensor head was specified for calculation of OUT
for velocity/acceleration.)
Err-66: The calculation method parameter does not satisfy the requirements
of the setting list. (No OUT was specified for AVE, MAX, MIN, or P-P
calculation.)

5-7

5 RS-232C

Measurement control command format
This section describes the command format used to control the measurement. The
incoming command is a command that the LK-G5000 Series can receive during the
measurement and the response command is a command that is sent after the incoming
command is processed properly.
The following subsections include details about the incoming commands and details
about the response commands that are sent after the incoming commands are processed
properly.
Refer to "Outline of the command format" (page 5-5) for the error response commands and
refer to "Timing diagrams" (page 5-35) for the response delay time.
NOTE
These commands are accepted only when the controller is in the "General mode".

 Measured value output (single)
Incoming command

MS,aa CR

Response command

MS,aa,hhhhhhhh CR

Parameter description

• Only the measured value for the specified OUT No. is output.
• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• hhhhhhhh: Measured value format

Error code

 Measured value output (multiple)
Incoming command

MM,iiiiiiiiiiii CR

Response command

MM,iiiiiiiiiiii,hhhhhhhh[,hhhhhhhh...,hhhhhhhh] CR

Parameter description

• Any number of OUT can be selected from 12 OUTs to output their
measured values.
• iiiiiiiiiiii: Sequence of numbers specifying 1 (output) or 0 (no output) for
each OUT (Example when OUT02 and OUT05 are specified:
010010000000)
• hhhhhhhh: Measured value format

Error code

• Err-62: All OUTs are specified with 0.
• Err-64: An OUT No. which exceeds the active OUT count was specified.

 Measured value output (ALL)
Incoming command

MA CR

Response command

MA,hhhhhhhh[,hhhhhhhh...,hhhhhhhh] CR

Parameter description

• The measured values for all OUT Nos. being used are output according to
"Active OUT count" in the Environment settings. (Example: When the
"active OUT count" is four, the measured values for OUT01 to OUT04 are
output.)
• hhhhhhhh: Measured value format

Error code

5-8

5 RS-232C


Timing ON/OFF (single)

Incoming command

TS,p,aa CR

Response command

TS,p,aa CR

Parameter description

• p: ON/OFF setting (0: OFF, 1: ON)
• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)

Error code

• Err-62: Synchronized OUT was specified.
• Err-64: An OUT No. which exceeds the active OUT count was specified.

 Timing ON/OFF (multiple)
Incoming command

TM,p,iiiiiiiiiiii CR

Response command

TM,p,iiiiiiiiiiii CR

Parameter description

• p: ON/OFF setting (0: OFF, 1: ON)
• iiiiiiiiiiii: Sequence of numbers specifying 1 (output) or 0 (no output) for
each OUT (Example when OUT02 and OUT05 are specified:
010010000000)

Error code

• Err-62: Synchronized OUT was specified.
• Err-64: An OUT No. which exceeds the active OUT count was specified.

 Timing ON/OFF (synchronous)
Incoming command

TP CR

Response command

TP CR

Parameter description

• This command is applied to all of the synchronized OUT.
• p: ON/OFF setting (0: OFF, 1: ON)

Error code

Err-62: Synchronized OUT does not exist.

 Auto-zero ON (single)
Incoming command

VS,aa CR

Response command

VS,aa CR

Parameter description

aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

5-9

5 RS-232C
 Auto-zero ON (multiple)
Incoming command

VM,iiiiiiiiiiii CR

Response command

VM,iiiiiiiiiiii CR

Parameter description

iiiiiiiiiiii: Sequence of numbers specifying 1 (output) or 0 (no output) for each
OUT (Example when OUT02 and OUT05 are specified: 010010000000)

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

 Auto-zero ON (synchronous)

Incoming command

VA CR

Response command

VA CR

Parameter description

This command is applied to all of the synchronized OUT.

Error code

Err-62: Synchronized OUT does not exist.

 Auto-zero OFF (single)
Incoming command

WS,aa CR

Response command

WS,aa CR

Parameter description

aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.



Auto-zero OFF (multiple)

Incoming command

WM,iiiiiiiiiiii CR

Response command

WM,iiiiiiiiiiii CR

Parameter description

iiiiiiiiiiii: Sequence of numbers specifying 1 (output) or 0 (no output) for each
OUT (Example when OUT02 and OUT05 are specified: 010010000000)

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

 Auto-zero OFF (synchronous)
Incoming command

WA CR

Response command

WA CR

Parameter description

This command is applied to all of the synchronized OUT channels.

Error code

Err-62: Synchronized OUT does not exist.

5-10

5 RS-232C
 Reset (single)
Incoming command

DS,aa CR

Response command

DS CR

Parameter description

aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

 Reset (multiple)
Incoming command

DM,iiiiiiiiiiii CR

Response command

DM CR

Parameter description

iiiiiiiiiiii: Sequence of numbers specifying 1 (output) or 0 (no output) for each
OUT (Example when OUT02 and OUT05 are specified: 010010000000)

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

 Reset (synchronous)
Incoming command

DA CR

Response command

DA CR

Parameter description

This command is applied to all of the synchronized OUT channels.

Error code

Err-62: Synchronized OUT does not exist.

 Panel lock
Incoming command

KL,p CR

Response command

KL CR

Parameter description

p: ON/OFF setting (0: OFF, 1: ON)

Error code

Err-62: The specified parameter is out of the parameter definition.

 Program switching
Incoming command

PW,o CR

Response command

PW CR

Parameter description

o: Program No. (0 to 7)

Error code

Err-62: The specified parameter is out of the parameter definition.

5-11

5 RS-232C
 Program confirmation
Incoming command

PR CR

Response command

PR,o CR

Parameter description

o: Program No. (0 to 7)

Error code

Err-51: Status error

 Data storage start

Incoming command

AS CR

Response command

AS CR

Parameter description

Error code

Err-51: The command was executed in a mode other than the Run mode.



Data storage stop

Incoming command

AP CR

Response command

AP CR

Parameter description

Error code

Err-51: Status error



Data storage initialization

Incoming command

AQ CR

Response command

AQ CR

Parameter description

Error code

Err-51: Status error

 Data storage data output
Incoming command

AO,aa CR

Response command

AO,hhhhhhhh...,hhhhhhhh CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• hhhhhhhh: Measured value format

Error code

Err-51: The specified OUT was not the OUT for which data is stored.

5-12

5 RS-232C
 Data storage status output
Incoming command

AN CR

Response command

AN,s,ddddddd[,ddddddd...ddddddd] CR

Parameter description

• s: Storage status (0: Data storage stopped, 1: Data being stored)
• ddddddd: Number of actually stored data (1200000 max. depending on
the number of specified OUT). As many values are output as the number
of OUT being used in the order of OUT01, OUT02, etc.

Error code

5-13

5 RS-232C

Setting change command
The following subsections include details about the incoming commands and details
about the response commands that are sent after the incoming commands are processed
properly.
Refer to "Outline of the command format" (page 5-5) for the error response commands and
refer to "Timing diagrams" (page 5-35) for the response delay time.
NOTE
These commands are accepted only when the controller is in the "Communication mode".

 Measurement display switching

Incoming command

DC,bb,bb CR

Response command

DC CR

Parameter description

bb: OUT No. to display data (01: OUT01, 02: OUT02,...12: OUT12, 00: No
display)
Values should be specified in the order of the upper window and lower
window.

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

 Tolerance setting
Incoming command

SW,LM,aa,fffffff,fffffff,fffffff CR

Response command

SW,LM CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• fffffff: Setting value format (Effective digits: 6).
Values should be specified in the order of the upper limit, lower limit, and
hysteresis. The most significant digit for the hysteresis is not a sign but 0.

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

Head settings
 ABLE
Incoming command

SW,HA,M,qq,m CR

Response command

SW,HA CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• m: Mode (0: AUTO, 1: MANUAL)

Error code

Err-64: A head No. which exceeds the active head count was specified.

5-14

5 RS-232C
 ABLE control range
Incoming command

SW,HA,R,qq,xx,xx CR

Response command

SW,HA CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• xx: Control range data (01 to 99). Values should be specified in the order
of the upper limit and lower limit.

Error code

• Err-62: The condition of "Upper limit  Lower limit" was not satisfied.
• Err-64: A head No. which exceeds the active head count was specified.

 Measurement mode
Incoming command

SW,HB,M,qq,c CR

Response command

SW,HB CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: Normal, 1: Translucent object, 2: Transparent object, 3:
Transparent object 2, 4: Semi opaque)

Error code

• Err-62: "c" is out of range.
• Err-64: A head No. which exceeds the active head count was specified.

 Base point
Incoming command

SW,HB,B,qq,c CR

Response command

SW,HB CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: NEAR, 1: FAR)

Error code

• Err-62: "c" is out of range.
• Err-64: A head No. which exceeds the active head count was specified.

 Alarm handling
Incoming command

SW,HC,N,qq,nnnn,nnnn CR

Response command

SW,HC CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• nnnn: Numerical value without a sign (0000 to 9999). Values should be
specified in the order of the process count and recovery count.

Error code

• Err-62: "nnnn" is out of range.
• Err-64: A head No. which exceeds the active head count was specified.

5-15

5 RS-232C
 Alarm level
Incoming command

SW,HC,L,qq,c CR

Response command

SW,HC CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Alarm level (0 to 9)

Error code

• Err-62: "c" is out of range.
• Err-64: A head No. which exceeds the active head count was specified.

 ABLE calibration start

Incoming command

SW,HD,S,qq CR

Response command

SW,HD CR

Parameter description

qq: Head No. (Numerical value from 01 to 12)

Error code

• Err-51: Unconnected sensor head was specified for the ABLE calibration.
• Err-64: A head No. which exceeds the active head count was specified.

 ABLE calibration finish
Incoming command

SW,HD,P CR

Response command

SW,HD CR

Parameter description

Error code

Err-51: The command was executed when the ABLE calibration was not
being performed.

 ABLE calibration stop
Incoming command

SW,HD,C CR

Response command

SW,HD CR

Parameter description

The sensor head being calibrated is automatically specified.

Error code

Err-51: The command was executed when the ABLE calibration was not
being performed.

 Mounting mode
Incoming command

SW,HE,qq,c CR

Response command

SW,HE CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: Diffuse reflection, 1: Specular reflection)

Error code

• Err-62: "c" is out of range.
• Err-64: A head No. which exceeds the active head count was specified.

5-16

5 RS-232C
 Mask setting
Incoming command

SW,HF,qq,c,fffffff,fffffff CR

Response command

SW,HF CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: OFF, 1: ON)
• fffffff: Setting value format (Effective digits: 6). Values should be specified
in the order of point 1 and point 2.

Error code

• Err-62: "c" or "fffffff" is out of range.
• Err-64: A head No. which exceeds the active head count was specified.

 Median
Incoming command

SW,HG,qq,c CR

Response command

SW,HG CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: OFF, 1: 7-point, 2: 15-point, 3: 31-point)

Error code

• Err-62: "c" is out of range.
• Err-64: A head No. which exceeds the active head count was specified.

 LASER CTRL group
Incoming command

SW,HH,qq,c CR

Response command

SW,HH,qq CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: LASER_CTRL1, 1: LASER_CTRL2)

Error code

• Err-62: "c" is out of range.
• Err-64: A head No. which exceeds the active head count was specified.

 Range setting
Incoming command

SW,HI,qq,c CR

Response command

SW,HI CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: CENTER, 1: FAR)

Error code

• Err-62: "c" is out of range.
• Err-64: A head No. which exceeds the active head count was specified.

5-17

5 RS-232C
 Mutual interference prevention group
Incoming command

SW,HJ,qq,c CR

Response command

SW,HJ CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: OFF, 1: AB-ON, 2: ABC-ON)

Error code

• Err-62: "c" is out of range.
• Err-64: A head No. which exceeds the active head count was specified.

OUT settings
 Calculation method
Incoming command

SW,OA,H,aa,ggg CR

Response command

SW,OA,aa CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• ggg: Head No. (H01 to H12) or OUT No. (O01 to O12), Calculation method
(C01: ADD, C02: SUB, C03: AVE, C04: MAX, C05: MIN, C06: P-P)

Error code

• Err-64: An OUT No. which exceeds the active OUT count was specified.
• Err-66: "ggg" does not conform to the specification described in the setting
list.

 Surface to be measured
Incoming command

SW,OA,T,aa,c CR

Response command

SW,OA,aa CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• c: Function No. (0: 1, 1: 2, 2: 3, 3: 4, 4: 1-2, 5: 1-3, 6: 1-4, 7: 2-3, 8: 2-4, 9:
3-4)

Error code

• Err-62: "c" is out of range.
• Err-64: An OUT No. which exceeds the active OUT count was specified.

 OUT to be calculated (ADD, SUB)
Incoming command

SW,OA,C,aa,jj,jj CR

Response command

SW,OA,aa CR

Parameter description

• The specified values are retained even after the "calculation method" is
changed.
• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• jj: OUT to be calculated (Numerical value from 01 to 12).
When the calculation is "OUT01 + OUT02", for example, these two "jj"
values will be "01" and "02".

Error code

• Err-64: An OUT No. which exceeds the active OUT count was specified.

5-18

5 RS-232C
 OUT to be calculated (AVE, MAX, MIN, P-P)
Incoming command

SW,OA,M,aa,iiiiiiiiiiii CR

Response command

SW,OA,aa CR

Parameter description

• This command is used when the selected calculation method is "AVE",
"MAX", "MIN", or "P-P".
• The specified values are retained even after the "calculation method" is
changed.
• iiiiiiiiiiii: Format used to specify multiple OUT, HEAD, or analog output
channel options. This is a sequence of numbers specifying 1 (output) or 0
(no output) for each OUT, HEAD, or analog output channel (Example when
OUT02 and OUT05 are specified: 010010000000)
• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)

Error code

• Err-64: An OUT No. which exceeds the active OUT count was specified.
• Err-66: "iiiiiiiiiiii" does not conform to the specification described in the
setting list.

 Scaling
Incoming command

SW,OB,aa,fffffff,fffffff,fffffff,fffffff CR

Response command

SW,OB CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• fffffff: Setting value format (Effective digits: 6). Values should be specified
in the order of the measured value for point 1 (input value), displayed value
for point 1, measured value for point 2 (input value), and displayed value
for point 2.

Error code

• Err-64: An OUT No. which exceeds the active OUT count was specified.
• Err-68: "fffffff" does not conform to the specification in the setting list.

 Filter
Incoming command

SW,OC,aa,c,c CR

Response command

SW,OC CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• c: Function No.
First c: Filter mode (0: Averaging, 1: Low-pass filter, 2: High-pass filter)
Second c: Function No. for the filter mode selected with the first c
(0: Averaging 1 time or 3000 Hz, 1: Averaging 4 times or 1000 Hz,
2: Averaging 16 times or 300 Hz, 3: Averaging 64 times or 100 Hz,
4: Averaging 256 times or 30 Hz, 5: Averaging 1024 times or 10 Hz,
6: Averaging 4096 times or 3 Hz, 7: Averaging 16384 times or 1 Hz,
8: Averaging 65536 times or 0.3 Hz, 9: Averaging 262144 times or 0.1 Hz)

Error code

• Err-62: "c" is out of range.
• Err-64: An OUT No. which exceeds the active OUT count was specified.

5-19

5 RS-232C
 Measurement (Hold) mode
Incoming command

SW,OD,aa,c CR

Response command

SW,OD CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• c: Function No. (0: Normal, 1: Peak hold, 2: Bottom hold, 3: Peak-to-peak
hold, 4: Sample hold, 5: Average hold)

Error code

• Err-62: "c" is out of range.
• Err-64: An OUT No. which exceeds the active OUT count was specified.

 Trigger mode
Incoming command

SW,OE,M,aa,c CR

Response command

SW,OE CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• c: Function No. (0: Trigger 1, 1: Trigger 2)

Error code

• Err-62: "c" is out of range.
• Err-64: An OUT No. which exceeds the active OUT count was specified.

 Offset
Incoming command

SW,OF,aa,fffffff CR

Response command

SW,OF CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• fffffff: Setting value format (Effective digits: 6)

Error code

• Err-62: "fffffff" is out of range.
• Err-64: An OUT No. which exceeds the active OUT count was specified.

 Minimum display unit
Incoming command

SW,OG,aa,c CR

Response command

SW,OG CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• c: Function No.
When "Displacement" is selected for the measurement type
(0: 0.01 mm, 1: 0.001 mm, 2: 0.0001 mm, 3: 0.00001 mm, 4: 0.1 μm,
5: 0.01 μm, 6: 0.001 μm)
When "Velocity" is selected for the measurement type
(0: 0.1 m/s, 1: 0.01 m/s, 2: 0.001 m/s, 3: 0.1 mm/s, 4: 0.01 mm/s,
5: 0.001 mm/s, 6: 0.0001 mm/s)
When "Acceleration" is selected for the measurement type
(0: 0.1 km/s2, 1: 0.01 km/s2, 2: 0.001 km/s2, 3: 0.1 m/s2, 4: 0.01 m/s2,
5: 0.001 m/s2, 6: 0.0001 m/s2)

Error code

• Err-62: "c" is out of range.
• Err-64: An OUT No. which exceeds the active OUT count was specified.

5-20

5 RS-232C
 Analog output scaling
Incoming command

SW,OH,aa,fffffff,fffffff,fffffff,fffffff CR

Response command

SW,OH CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• fffffff: Setting value format (Effective digits: 6). Values should be specified
in the order of the measured value for point 1, output value for point 1,
measured value for point 2, and output value for point 2.

Error code

• Err-64: An OUT No. which exceeds the active OUT count was specified.
• Err-69: "fffffff" does not conform to the specification in the setting list.

 Measurement type
Incoming command

SW,OI,aa,c CR

Response command

SW,OI CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• c: Function No. (0: Displacement, 1: Velocity, 2: Acceleration)

Error code

• Err-62: "c" is out of range.
• Err-64: An OUT No. which exceeds the active OUT count was specified.

 Synchronization setting
Incoming command

SW,OJ,aa,c CR

Response command

SW,OJ CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• c: Function No. (0: OFF, 1: ON)

Error code

• Err-62: "c" is out of range.
• Err-64: An OUT No. which exceeds the active OUT count was specified.

 Storage (OUT No. specification)
Incoming command

SW,OK,aa,c CR

Response command

SW,OK CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• c: Function No. (0: OFF, 1: ON)

Error code

• Err-62: "c" is out of range.
• Err-64: An OUT No. which exceeds the active OUT count was specified.

5-21

5 RS-232C

Common settings
 Sampling cycle
Incoming command

SW,CA,c CR

Response command

SW,CA CR

Parameter description

c: Function No. (0: 2.55 μs, 1: 5 μs, 2: 10 μs, 3: 20 μs, 4: 50 μs, 5: 100 μs, 6:
200 μs, 7: 500 μs, 8: 1000 μs)

Error code

Err-62: "c" is out of range.

 Mutual interference prevention

Incoming command

SW,CB,c CR

Response command

SW,CB CR

Parameter description

c: Function No. (0: OFF, 1: AB-ON, 2: ABC-ON)

Error code

Err-62: "c" is out of range.



Comparator output form

Incoming command

SW,CD,c CR

Response command

SW,CD CR

Parameter description

c: Function No. (0: Normal, 1: Hold, 2: Off-delay)

Error code

Err-62: "c" is out of range.

 Strobe time
Incoming command

SW,CE,c CR

Response command

SW,CE CR

Parameter description

c: Function No. (0: 2 ms, 1: 5 ms, 2: 10 ms, 3: 20 ms)

Error code

Err-62: "c" is out of range.

 Data storage
Incoming command

SW,CF,ddddddd,ll CR

Response command

SW,CF CR

Parameter description

• ddddddd: Number of data to be stored (0000000 to 1200000)
• ll: Storage cycle (0: 1x, 1: 2x, 2: 5x, 3: 10x, 4: 20x, 5: 50x,
6: 100x, 7: 200x, 8: 500x, 9: 1000x, 10: Synchronous input)

Error code

Err-62: "ddddddd" or "ll" is out of range.

5-22

5 RS-232C
 Analog output channel
Incoming command

SW,CG,ee,bb CR

Response command

SW,CG CR

Parameter description

• ee: Analog output channel No. (Numerical value from 01 to 12)
• bb: OUT No. to output data (01: OUT01, 02: OUT02,...12: OUT12, 00: No
output)

Error code

• Err-62: "ee" exceeds the active analog output channel count.
• Err-64: An OUT No. which exceeds the active OUT count was specified.

 Alarm output type
Incoming command

SW,CH,c CR

Response command

SW,CH CR

Parameter description

c: Function No. (0: System alarm, 1: Measured value alarm, 2: Both)

Error code

Err-62: "c" is out of range.

Environment settings
 Active OUT count
Incoming command

SW,EE,yy CR

Response command

SW,EE CR

Parameter description

yy: Active OUT/head count (02 to 12)

Error code

Err-62: "yy" is out of range.

 Active head count
Incoming command

SW,EF,yy CR

Response command

SW,EF CR

Parameter description

yy: Active OUT/head count (02 to 12)

Error code

Err-62: "yy" is out of range.

 Active analog output channel count
Incoming command

SW,EG,yy CR

Response command

SW,EG CR

Parameter description

yy: Active OUT/head count (02 to 12)

Error code

Err-62: "yy" is out of range.

5-23

5 RS-232C
 IP address
Incoming command
Response command

SW,EH,I,zzzzzzzzzzzz CR
SW,EH CR

Parameter description

zzzzzzzzzzzz: IP address (Numerical values of zzz.zzz.zzz.zzz)
Example: When the IP address is 10.10.1.9, specify "010010001009".

Error code

Err-62: "zzzzzzzzzzzz" is out of range.

 Subnet mask

Incoming command

SW,EH,M,zzzzzzzzzzzz CR

Response command

SW,EH CR

Parameter description

zzzzzzzzzzzz: Subnet mask (Numerical values of zzz.zzz.zzz.zzz)
Example: When the subnet mask is 255.255.0.0, specify "255255000000".

Error code

Err-62: "zzzzzzzzzzzz" is out of range.

 Default gateway
Incoming command

SW,EH,G,zzzzzzzzzzzz CR

Response command

SW,EH CR

Parameter description

zzzzzzzzzzzz: IP address of default gateway (Numerical values of
zzz.zzz.zzz.zzz)
Example: When the IP address is 10.10.1.9, specify "010010001009".

Error code

Err-62: "zzzzzzzzzzzz" is out of range.

5-24

5 RS-232C

Setting confirmation command format
This section describes the format for the commands used to confirm the setting.
NOTE
These commands are accepted only when the controller is in the "Communication mode".

• The setting value format is returned including a decimal point.
• Refer to "Setting change command" (page 5-14) for details about each command.
 Measurement display confirmation
Incoming command

DR CR

Response command

DR,bb,bb CR

Parameter description

bb: OUT No. to display/output data (01: OUT01, 02: OUT02,...12: OUT12,
00: No display/output). Values are returned in the order of the upper window
and lower window.

Error code

 Tolerance setting
Incoming command

SR,LM,aa CR

Response command

SR,LM,aa,ffffffff,ffffffff,fffffff CR

Parameter description

• aa: OUT (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• fffffff: Setting value format (Effective digits: 6). Values are returned in the
order of the upper limit, lower limit, and hysteresis.

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

Head settings
 ABLE
Incoming command

SR,HA,M,qq CR

Response command

SR,HA,M,qq,m CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• m: Mode (0: AUTO, 1: MANUAL)

Error code

Err-64: A head No. which exceeds the active head count was specified.

5-25

5 RS-232C


ABLE control range

Incoming command

SR,HA,R,qq CR

Response command

SR,HA,R,qq,xx,xx CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• xx: Control range data (01 to 99). Values are returned in the order of the
upper limit and lower limit.

Error code

Err-64: A head No. which exceeds the active head count was specified.

 Measurement mode
Incoming command

SR,HB,M,qq CR

Response command

SR,HB,M,qq,c CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: Normal, 1: Translucent object, 2: Transparent object, 3:
Transparent object 2, 4: Semi opaque)

Error code

Err-64: A head No. which exceeds the active head count was specified.

 Base point
Incoming command

SR,HB,B,qq CR

Response command

SR,HB,B,qq,c CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: NEAR, 1: FAR)

Error code

Err-64: A head No. which exceeds the active head count was specified.

 Alarm handling
Incoming command

SR,HC,N,qq CR

Response command

SR,HC,N,qq,nnnn,nnnn CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• nnnn: Numerical value without a sign (0000 to 9999). Values are returned
in the order of the process count and recovery count.

Error code

Err-64: A head No. which exceeds the active head count was specified.

 Alarm level
Incoming command

SR,HC,L,qq CR

Response command

SR,HC,L,qq,c CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0 to 9)

Error code

Err-64: A head No. which exceeds the active head count was specified.

5-26

5 RS-232C
 Mounting mode
Incoming command

SR,HE,qq CR

Response command

SR,HE,qq,c CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: Diffuse reflection, 1: Specular reflection)

Error code

Err-64: A head No. which exceeds the active head count was specified.

 Mask setting
Incoming command

SR,HF,qq,c CR

Response command

SR,HF,qq,c,fffffff,fffffff CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: OFF, 1: ON)
• fffffff: Setting value format (Effective digits: 6). Values are returned in the
order of point 1 and point 2.

Error code

• Err-62: "c" is out of range.
• Err-64: A head No. which exceeds the active head count was specified.

 Median
Incoming command

SR,HG,qq CR

Response command

SR,HG,qq,c CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: OFF, 1: 7-point, 2: 15-point, 3: 31-point)

Error code

Err-64: A head No. which exceeds the active head count was specified.

 LASER CTRL group
Incoming command

SR,HH,qq CR

Response command

SR,HH,qq,c CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: LASER CTRL1, 1: LASER CTRL2)

Error code

Err-64: A head No. which exceeds the active head count was specified.

 Range setting
Incoming command

SR,HI,qq CR

Response command

SR,HI,qq,c CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: CENTER, 1: FAR)

Error code

Err-64: A head No. which exceeds the active head count was specified.

5-27

5 RS-232C
 Mutual interference prevention group
Incoming command

SR,HJ,qq CR

Response command

SR,HJ,qq,c CR

Parameter description

• qq: Head No. (Numerical value from 01 to 12)
• c: Function No. (0: OFF, 1: AB-ON, 2: ABC-ON)

Error code

Err-64: A head No. which exceeds the active head count was specified.

OUT settings
 Calculation method
Incoming command

SR,OA,H,aa CR

Response command

SR,OA,H,aa,ggg CR

Parameter description

• aa: OUT/analog output channel No. (Numerical value from 01 to 12, 01:
OUT1, 02: OUT02,...12: OUT12)
• ggg: Head No. (H01 to H12) or OUT No. (O01 to O12), Calculation method
(C01: ADD, C02: SUB, C03: AVE, C04: MAX, C05: MIN, C06: P-P)

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

 Surface to be measured
Incoming command

SR,OA,T,aa CR

Response command

SR,OA,T,aa,c CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• c: Function No. (0: 1, 1: 2, 2: 3, 3: 4, 4: 1-2, 5: 1-3, 6: 1-4, 7: 2-3, 8: 2-4, 9:
3-4)

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

 OUT to be calculated (Add, Sub)
Incoming command

SR,OA,C,aa CR

Response command

SR,OA,C,aa,jj,jj CR

Parameter description

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

5-28

5 RS-232C
 OUT to be calculated (AVE, MAX, MIN, P-P)
Incoming command

SR,OA,M,aa CR

Response command

SR,OA,M,aa,iiiiiiiiiiii CR

Parameter description

• The specified values are retained even after the "calculation method" is
changed.
• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• iiiiiiiiiiii: Format used to specify multiple OUT or HEAD.

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

 Scaling
Incoming command

SR,OB,aa CR

Response command

SR,OB,aa,fffffff,fffffff,fffffff,fffffff CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• fffffff: Setting value format (Effective digits: 6). Values are returned in the
order of the measured value for point 1 (input value), displayed value for
point 1, measured value for point 2 (input value), and displayed value for
point 2.

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

 Filter
Incoming command

SR,OC,aa CR

Response command

SR,OC,aa,c,c CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• c: Function No.
First c: Filter mode (0: Averaging, 1: Low-pass filter, 2: High-pass filter)
Second c: Function No. for the filter mode selected with the first c
(0: Averaging 1 time or 3000 Hz, 1: Averaging 4 times or 1000 Hz,
2: Averaging 16 times or 300 Hz, 3: Averaging 64 times or 100Hz,
4: Averaging 256 times or 30Hz, 5: Averaging 1024 times or 10Hz,
6: Averaging 4096 times or 3 Hz, 7: Averaging 16384 times or 1 Hz,
8: Averaging 65536 times or 0.3 Hz, 9: Averaging 262144 times or 0.1 Hz)

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

 Measurement mode
Incoming command

SR,OD,aa CR

Response command

SR,OD,aa,c CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• c: Function No. (0: Normal, 1: Peak hold, 2: Bottom hold, 3: Peak-to-peak
hold, 4: Sample hold, 5: Average hold)

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

5-29

5 RS-232C
 Trigger mode
SR,OE,M,aa CR

Incoming command
Response command

SR,OE,M,aa,c CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• c: Function No. (0: Trigger 1, 1: Trigger 2)

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

 Offset
Incoming command

SR,OF,aa CR

Response command

SR,OF,aa,fffffff CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• fffffff: Setting value format (Effective digits: 6)

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

 Minimum display unit
Incoming command

SR,OG,aa CR

Response command

SR,OG,aa,c CR

Parameter description

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

 Analog output scaling
Incoming command

SR,OH,aa CR

Response command

SR,OH,aa,fffffff,fffffff,fffffff,fffffff CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• fffffff: Setting value format (Effective digits: 6). Values are returned in the
order of the measured value for point 1, output value for point 1, measured
value for point 2, and output value for point 2.

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

5-30

5 RS-232C
 Measurement type
Incoming command

SR,OI,aa CR

Response command

SR,OI,aa,c CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• c: Function No. (0: Displacement, 1: Velocity, 2: Acceleration)

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

 Synchronization setting
Incoming command

SR,OJ,aa CR

Response command

SR,OJ,aa,c CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• c: Function No. (0: OFF, 1: ON)

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

 Storage (OUT No. setting)
Incoming command

SR,OK,aa CR

Response command

SR,OK,aa,c CR

Parameter description

• aa: OUT No. (Numerical value from 01 to 12, 01: OUT1, 02: OUT02,...12:
OUT12)
• c: Function No. (0: OFF, 1: ON)

Error code

Err-64: An OUT No. which exceeds the active OUT count was specified.

Common settings
 Sampling cycle
Incoming command

SR,CA CR

Response command

SR,CA,c CR

Parameter description

c: Function No. (0: 2.55 μs, 1: 5 μs, 2: 10 μs, 3: 20 μs, 4: 50 μs, 5: 100 μs,
6: 200 μs, 7: 500 μs, 8: 1000 μs)

Error code

5-31

5 RS-232C
 Mutual interference prevention
Incoming command

SR,CB CR

Response command

SR,CB,c CR

Parameter description

c: Function No. (0: OFF, 1: AB-ON, 2: ABC-ON)

Error code

 Comparator output form

Incoming command

SR,CD CR

Response command

SR,CD,c CR

Parameter description

c: Function No. (0: Normal, 1: Hold, 2: Off-delay)

Error code

 Strobe time
Incoming command

SR,CE CR

Response command

SR,CE,c CR

Parameter description

c: Function No. (0: 2 ms, 1: 5 ms, 2: 10 ms, 3: 20 ms)

Error code

 Data storage
Incoming command

SR,CF CR

Response command

SR,CF,ddddddd,ll CR

Parameter description

• ddddddd: Number of data to be stored (0000000 to 1200000)
• ll: Storage cycle (0: 1x, 1: 2x, 2: 5x, 3: 10x, 4: 20x, 5: 50x, 6: 100x, 7: 200x,
8: 500x, 9: 1000x, 10: Synchronous input)

Error code

 Analog output channel
Incoming command

SR,CG,ee CR

Response command

SR,CG,ee,bb CR

Parameter description

• ee: Analog output channel No. (Numerical value from 01 to 12)
• bb: OUT No. to output data (01: OUT01, 02: OUT02,...12: OUT12)

Error code

Err-69: "ee" exceeds the active analog output channel count.

5-32

5 RS-232C
 Alarm output type
Incoming command

SR,CB CR

Response command

SR,CH,c CR

Parameter description

c: Function No. (0: System alarm, 1: Measured value alarm, 2: Both)

Error code

Environment settings
 Active OUT count
Incoming command

SR,EE CR

Response command

SR,EE,yy CR

Parameter description

yy: Active OUT/head/analog output channel count (02 to 12)

Error code

 Active head count
Incoming command

SR,EF CR

Response command

SR,EF,yy CR

Parameter description

yy: Active OUT/head/analog output channel count (02 to 12)

Error code

 Active analog output channel count
Incoming command

SR,EG CR

Response command

SR,EE,yy CR

Parameter description

yy: Active OUT/head/analog output channel count (02 to 12)

Error code

 IP address
Incoming command

SR,EH,I CR

Response command

SR,EH,I,zzzzzzzzzzzz CR

Parameter description

zzzzzzzzzzzz: IP address (Numerical values of zzz.zzz.zzz.zzz)
Example: When the IP address is 10.10.1.9, specify "010010001009".

Error code

5-33

5 RS-232C
 Subnet mask
Incoming command

SR,EH,M CR

Response command

SR,EH,M,zzzzzzzzzzzz CR

Parameter description

zzzzzzzzzzzz: Subnet mask (Numerical values of zzz.zzz.zzz.zzz)
Example: When the subnet mask is 255.255.0.0, specify "255255000000".

Error code

 Default gateway

Incoming command

SR,EH,G CR

Response command

SR,EH,G,zzzzzzzzzzzz CR

Parameter description

zzzzzzzzzzzz: IP address of default gateway (Numerical values of
zzz.zzz.zzz.zzz)
Example: When the IP address is 10.10.1.9, specify "010010001009".

Error code

5-34

5 RS-232C

Timing diagrams
The timing diagram of the incoming and response commands is as follows.
Incoming command

Reception

Response command

Response

The following table describes time t for each command.
Command
Measurement/control

Setting/confirmation

Mode change
Other

100 ms + Number of head expansion units x 100 ms

SW,HD,S

600 ms + Number of head expansion units x 750 ms

SW,HD,P

100 ms + Number of head expansion units x 10 ms

SW,HD,C

100 ms + Number of head expansion units x 20 ms

SW,EE

100 ms

SW,EF

100 ms

5 ms + Number of head expansion units x 10 ms

600 ms + Number of head expansion units x 750 ms

5 ms

Reference
The response speed becomes slower than the figures in the table during communication with the LKNavigator 2 setup support software or when the expansion unit is connected.

5-35

5 RS-232C

Data Storage Function
This section describes the data storage function using the RS-232C interface.
Reference
• For details on the data storage function, refer to page 2-11.
• For the procedure of operating the data storage function with LK-Navigator2, refer to LK-Navigator2
User's Manual.

Environmental settings
Item

Setting value

Remark

Baud rate

9600/19200/38400/57600/115200bps

Parity

None/Even/Odd

The settings depend on the external
device connected.

Command input/output procedure
The procedure for storing and reading measurement data is described below.
Reference
• The "data storage setting" and "storage (OUT)" commands can be received only when the controller
is set in "Communication mode".
• The "data storage start", "data storage stop" and "data storage/data output" commands can be
received only when the controller is set in "General mode".
• For switching between the "General mode" and the "Communication mode", refer to "Mode change
command" (page 5-7) in this manual.
• Timing signal input methods are as described below.
Input method
External terminal input (TIMING1)
Input via RS-232C interface
Input from dedicated touch panel LK-HD1000

5-36

Reference page
page 4-2
page 5-9
LK-HD1000 User’s Manual

5 RS-232C
 When the storage cycle is other than "Synchronization input"
1. Specify the number of storage points and the storage cycle with the "data storage
setting" command. (page 5-22)
2. Specify an OUT to be stored to with the "storage (OUT)" command. (page 5-21)
3. Start data storage with the "data storage start" command. (page 5-12)
4. Stop data storage with the "data storage stop" command. (page 5-12)
5. Output stored data with the "data storage/data output" command. (page 5-12)
 When storage cycle is "Synchronization input"
1. Select an OUT to be stored to in synchronization with synchronous input in
"Synchronization setting". (page 5-21)
2. Specify the number of storage points and the storage cycle with the "data storage
setting" command. The storage cycle is set in "Synchronization input". (page 5-22)
3. Specify an OUT to be stored to with the "storage (OUT)" command. (page 5-21)
4. Start data storage with the "data storage start" command. (page 5-12)
5. Input a synchronous signal.
6. Stop data storage with the "data storage stop" command. (page 5-12)
7. Output stored data with the "data storage/data output" command. (page 5-12)

5-37

5 RS-232C

Measured Value Output through External
Synchronization
This section describes how to output the measured value through the RS-232C interface
in synchronization with the measurement triggered by the signal from the input terminal
(TIMING1 input). Since no incoming command is used, this method is useful when you
only need to import the measured value or when the LK-G5000 Series is connected to a
device that cannot send commands such as a data logger. The OUT terminals which
output the measured values with this method are the synchronized OUT only.

Reference
Commands for measured value output and for changing settings can be used even when the
measured values are being output through the external synchronization (when the external trigger
input is not OFF).

NOTE
Do not attempt to determine the next measured value while the current measured value is being output
through the RS-232C interface. That next measured value will not be output.

Environment settings parameters
Set the environment settings as follows (page 3-72).
Item

Setting value

Remark

Baud rate

9600/19200/38400/57600/115200 bps

Parity

None/even/odd

Automatic
transmission

ON/OFF

Set the appropriate parameter
according to the external device to be
connected.
Select ON or OFF according to the
output type.

Output type
The measured value to be output is the value determined by the external synchronization
(TIMING1 input).
The output is set as follows depending on the automatic transmission setting.
Automatic transmission

Output type

OFF

Disables the measured value output through the external synchronization.

Enables the measured value output through the external synchronization.

5-38

5 RS-232C

Timing diagrams
 When the measurement mode is other than the sample hold (Trigger 2)
TIMING input

ON
OFF
Measured
value

RS-232C data output

T2 + 2 ms

 When the measurement mode is the sample hold (Trigger 2)
TIMING input

ON
OFF

5
Measured
value

RS-232C data output
T2 + T4 + 2 ms

Reference
For details on T2 (input response time) and T4 (sampling period), refer to "Timing details" (page 4-26).

5-39

5 RS-232C

Output format
The following command format is used for the measured value output.
Regardless of the synchronization setting (synchronous/asynchronous), the measured
value determined for each OUT No. is output in this format.
T G , a a , f f f f f f f f CR
OUT No.
01: OUT01 to 12: OUT12

Measured value format

ASCII code table (Reference)
High-order four bits

Low-order four bits

0 1 2 3 4 5 6 7

5-40

0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F

0
H
1 ！ 1
S
D
T
C
X
2 ” 2
E
D
T
C ＃ 3
X
3
E
D
O
C ＄ 4
T
4
E
N
N
A % 5
Q
K
A
S
C
Y & 6
K
N
B
E
E
T
7
L
B '
B CA （ 8
S N
H E ）9
T M
L SU * :
F B
V ES + ;
T C
F → , <
F
C ← - =
R
S ↑ . >
O
S ↓／ ?
I
U

L
E

@ P ｀ p
A Q a q
B R b r
C S c s
D T d t
E U e u
F V f v
G W g w
H X h x
I Y i y
J Z j z
K [ k {
L ￥ l ｜
M ] m }
N ＾ n ∼
O ＿ o DT

Specifications

This chapter includes the specifications of the controller and
sensor head, the outer dimensions, and the characteristics such
as the beam spot diameter.

Specifications ....................................................................... 6-2
Dimensions......................................................................... 6-15
Characteristics.................................................................... 6-25

6-1

6 Specifications

Specifications
Controller

Model

Single unit type

LK-G5001V

LK-G5001PV

Separate type

LK-G5001/
LK-HD500

LK-G5001P/
LK-HD500

Designation

Main controller

Sensor head compatibility

Compatible

No. of connectable sensor heads

Display
(LK-HD500)

LK-HA100
Head expansion unit

Minimum display unit

0.001 μm

Display range

±999.999 μm to ±9999.99 mm
(7 settings selectable)

N/A

Display cycle

Approx. 10 times/sec.

DISPLAY port

Either the display unit (LK-HD500) or
dedicated touch panel (LK-HD1001)
can be connected

N/A

LED indicator

LASER ON

POWER
STABILITY
BRIGHT
DARK

Display
interface

Analog voltage output ±10 V output, Output impedance: 100 
Analog current output 4 to 20 mA, Maximum load resistance: 350 
No. of analog outputs 2
TIMING1 input*1

Non-voltage input

Voltage input

Non-voltage input

Voltage input

RESET1 input*1
Terminal block

Auto-zero1 input*1
Laser control
input
Laser remote
input*2
Alarm output
General comparator
output
TIMING input

N/A
Non-voltage input
NPN open-collector
output

PNP open-collector
output

Non-voltage input

Voltage input

Non-voltage input

Voltage input

RESET input
Auto-zero input
Expansion
connector

Program switch input

N/A

Binary selection input
Alarm output
Comparator output
Binary output

6-2

NPN open-collector
output

PNP open-collector
output

6 Specifications

Model

Single unit type

LK-G5001V

LK-G5001PV

Separate type

LK-G5001/
LK-HD500

LK-G5001P/
LK-HD500

LK-HA100

RS-232C interface

Baud rate: 9600 to 115200 bps
Data length: 8 bits
Stop bit length: 1 bit
Parity: None/even/odd

USB interface

USB Revision 2.0 high speed compliant*3

Ethernet interface*4

100Base-TX/10Base-T

Head expansion unit connector

Up to 10 head expansion units can be connected to one main
controller

Expansion unit connector

Either of the CC-Link unit (LK-CC100) or
DeviceNet unit (LK-DN100) can be
connected

Power supply voltage 24 VDC±10%
Power supply

Environment
resistance
Weight

N/A

N/A
24 VDC±10%
(Supplied from
the controller)

Maximum current
consumption

3.5 A (when the maximum number of head expansion units are
connected)

Ambient temperature

When one or less head expansion unit is connected: 0 to 50C
When two or more head expansion units are connected: 0 to 40C

Relative humidity

35 to 85%RH (No condensation)
600 g

300 g

*7 This input is applied to all of the synchronized OUT.
*8 When the laser class 3B sensor head is connected, a key-operated switch must be used for the
input to this terminal. The laser is emitted only when the key-operated switch is set to the ON
position. (Select a key which can be removed only when it is set to the OFF position.) When the
laser class 1, 2/3R sensor head is connected, the laser turns on when this terminal is opened and
turns off when it is short-circuited.
*9 When a PC supporting USB Revision 1.1 or USB Revision 2.0 full speed is connected, the data
refresh cycle and other operations may slow down.
*10The Ethernet connection should be used only for one-to-one connection with a PC or for local
connection including only the PC and the LK-G5000 Series units.

NPN open-collector output rating: 50 mA max. (40 V max.), Residual voltage: 0.5 V max.
PNP open-collector output rating: 50 mA max. (30 V max.), Residual voltage: 0.5 V max.
Non-voltage input rating: ON voltage: 1 V max., OFF current: 0.6 mA max.
Voltage input rating: Maximum input rating: 26.4 V, ON voltage: 10.2 V, OFF current: 0.6
mA
• Parts of the input/output circuit of the LK-G5000 Series are internally common. Be
careful that no potential difference is generated between the internally common
terminals due to the potential difference between the cables/external devices. For
details, refer to "Precautions on wiring" (page 7).
•
•
•
•

6-3

6 Specifications

Sensor head
LK-H008/H008W
LK-H008/
LK-H008W

Model
Mounting mode

Specular reflection

Reference distance

8 mm

Measurement range*1

±0.5 mm
Red semiconductor laser

Wavelength
Light source

IEC60825-1

Laser
Class FDA(CDRH) Class 1
Part 1040.10
Output

655 nm
Class II

0.3 mW

Beam spot diameter (at reference
distance)

20 μm
20 μm x 550 μm

Linearity*2

±0.05% of F.S. (F.S. = 1.0 mm)

Repeatability*3

0.005 μm (0.001 μm)

Sampling cycle

2.55/5/10/20/50/100/200/500/1000 μs (9 steps selectable)

Temperature fluctuation

0.02% of F.S./C (F.S. = 1.0 mm)

Environment
resistance

Enclosure rating

IP67

Ambient light

Incandescent lamp or fluorescent lamp: 10000 lx max.

Ambient
temperature*4

0 to +50C

Relative humidity

35 to 85%RH (No condensation)

Vibration

10 to 55 Hz, 1.5 mm double amplitude in X, Y, and Z directions, 2
hours respectively

Material

Aluminum die-cast

Weight (including cable)

Approx. 240 g

*1 Measurement range when the sampling cycle is 20 μs or more.
*2 This value is obtained when the KEYENCE standard target (metal mirror workpiece) is measured in
the normal measurement mode.
*3 This value is obtained when the KEYENCE standard target (metal mirror workpiece) is measured at
the reference distance with the number of averaging measurements set to 16384.
*4 When the ambient temperature rises to 40 C or more, mount this on the metal plate for using.

6-4

6 Specifications

LK-H020/H025/H023/H028/H022/H027/H022K/H027K
LK-H020/
LK-H025

Model

LK-H023/
LK-H028

LK-H022/
LK-H027

LK-H022K/
LK-H027K

Mounting mode

Diffuse
reflection

Specular
reflection

Reference distance

20 mm

16.1 mm

Measurement range*1

±3 mm

±2.8 mm

Red semiconductor laser
Wavelength
Light source

IEC60825-1

650 nm

690 nm

650 nm

Class 3R

Class 3B

Class 2

Class IIIb

Class II

50 mW

0.95 mW

Laser
Class FDA(CDRH) Class IIIa
Part 1040.10
Output

4.8 mW

Beam spot diameter (at reference
distance)

25 μm (LK-H020/H023/H022/H022K)/
25 μm x 1400 μm (LK-H025/H028/H027/H027K)

Linearity*2

±0.02% of F.S. (F.S. = 6 mm)

Repeatability*3

0.02 μm (0.01 μm)

Sampling cycle

2.55/5/10/20/50/100/200/500/1000 μs (9 steps selectable)

Temperature fluctuation

0.01% of F.S./C (F.S. = 6 mm)

Environment
resistance

Enclosure rating

IP67

Ambient light

Incandescent lamp or fluorescent lamp: 10000 lx max.

Ambient
temperature*4

0 to +50C

0 to +45C

0 to +50C

Relative humidity

35 to 85%RH (No condensation)

Vibration

10 to 55 Hz, 1.5 mm double amplitude in X, Y, and Z directions, 2
hours respectively

Material

Aluminum die-cast

Weight (including cable)

Approx. 230 g

*1 For details about the measurement range, refer to page 1-12 (for the sampling cycles between 2.55
and 10 μs).
*2 This value is obtained when the KEYENCE standard target (light-diffusive white object) is measured
in the normal measurement mode.
*3 This value is obtained when the KEYENCE standard target (light-diffusive white object) is measured
at the reference distance with the number of averaging measurements set to 16384.
The value in parentheses is a typical example of a measurement with the number of averaging
measurements set to 65536.
*4 The LK-H023/H028 must be mounted on a metal plate when the ambient temperature rises to 40C
or more.

6-5

6 Specifications

LK-H050/H055/H053/H058/H052/H057/H052K/H057K
LK-H050/
LK-H055

Model

Diffuse
reflection

Mounting mode

LK-H053/
LK-H058
Diffuse
reflection

LK-H052/
LK-H057
Diffuse
reflection

LK-H052K/
LK-H057K
Specular
reflection

Reference distance

50 mm

46.3 mm

Measurement range*1

±10 mm

±5.2 mm

Red semiconductor laser
Wavelength
Light source

650 nm

690 nm

650 nm

Class 3R

Laser
Class FDA(CDRH) Class IIIa
Part 1040.10

Class 3B

Class 2

Class IIIb

Class II

Output

50 mW

0.95 mW

IEC60825-1

4.8 mW

Beam spot diameter (at reference
distance)

50 μm (LK-H050/H053/H052/H052K)/
50 μm x 2000 μm (LK-H055/H058/H057/H057K)

Linearity*2

±0.02% of F.S. (F.S. = 20 mm)

Repeatability*3

0.025 μm

Sampling cycle

2.55/5/10/20/50/100/200/500/1000 μs (9 steps selectable)

Temperature fluctuation

0.01% of F.S./C (F.S. = 20 mm)

Environment
resistance

Enclosure rating

IP67

Ambient light

Incandescent lamp or fluorescent lamp: 10000 lx max.

Ambient
temperature

0 to +50C

Relative humidity

35 to 85%RH (No condensation)

Vibration

10 to 55 Hz, 1.5 mm double amplitude in X, Y, and Z directions, 2
hours respectively

Material

Aluminum die-cast

Weight (including cable)

Approx. 260 g

*1 For details about the measurement range, refer to page 1-13 (for the sampling cycles between 2.55
and 10 μs).
*2 This value is obtained when the KEYENCE standard target (light-diffusive white object) is measured
in the normal measurement mode.
*3 This value is obtained when the KEYENCE standard target (light-diffusive white object) is measured
at the reference distance with the number of averaging measurements set to 16384.

6-6

6 Specifications

LK-H080/H085/H082/H087
LK-H080/
LK-H085

Model

LK-H082/
LK-H087

Mounting mode

Diffuse reflection

Reference distance

80 mm

Diffuse reflection
80 mm

Measurement range*1

±18 mm

Red semiconductor laser
Wavelength
Light source

IEC60825-1

655 nm

650 nm

Class 3R

Class 2

Laser
Class FDA(CDRH) Class IIIa
Part 1040.10
Output

4.8 mW

Beam spot diameter (at reference
distance)

 70 μm (LK-H080/082)

Linearity*2

±0.02% of F.S. (F.S. = 36 mm)

Repeatability*3

0.10 μm

Class II
0.95 mW

70 μm x 2500 μm (LK-H085/087)

Sampling cycle

2.55/5/10/20/50/100/200/500/1000 μs (9 steps selectable)

Temperature fluctuation

0.01% of F.S./C (F.S. = 36 mm)

Environment
resistance

Enclosure rating

IP67

Ambient light

Incandescent lamp or fluorescent lamp: 10000 lx max.

Ambient
temperature*4

0 to +50C

Relative humidity

35 to 85%RH (No condensation)

Vibration

10 to 55 Hz, 1.5 mm double amplitude in X, Y, and Z directions, 2
hours respectively

Material

Aluminum die-cast

Weight (including cable)

Approx. 280 g

*1 This measurement range is when the sampling cycle is over 20 μs.
*2 This value is obtained when the KEYENCE standard target (diffusive, white object) is measured
whilst using the standard mode.
*3 This value is obtained when the KEYENCE standard target (light-diffusive white object) is measured
at the reference distance with the number of averaging measurements set to 16384.
*4 Should the ambient temperature be above 40C, a metal plate must be attached before use.

6-7

6 Specifications

LK-H150/H155/H152/H157
LK-H150/
LK-H155

Model

LK-H152/
LK-H157

Mounting mode

Diffuse reflection

Reference distance

150 mm

Diffuse reflection
150 mm

Measurement range*1

±40 mm

Red semiconductor laser
Wavelength
Light source

IEC60825-1

650 nm
Class 2

Laser
Class FDA(CDRH) Class IIIa
Part 1040.10
Output

655 nm
Class 3R

4.8 mW

Class II
0.95 mW

 120 μm (LK-H150/152)

Beam spot diameter (at reference
distance)

120 μm x 4200 μm (LK-H155/157)

Linearity*2

±0.02% of F.S. (F.S. = 80 mm)

Repeatability*3

0.25 μm

Sampling cycle

2.55/5/10/20/50/100/200/500/1000 μs (9 steps selectable)

Temperature fluctuation

0.01% of F.S./C (F.S. = 80 mm)

Environment
resistance

Enclosure rating

IP67

Ambient light

Incandescent lamp or fluorescent Incandescent lamp or fluorescent
lamp: 10000 lx max.
lamp: 5000 lx max.

Ambient
temperature*4

0 to +50C

Relative humidity

35 to 85%RH (No condensation)

Vibration

10 to 55 Hz, 1.5 mm double amplitude in X, Y, and Z directions, 2
hours respectively

Material

Aluminum die-cast

Weight (including cable)

Approx. 300 g

6-8

6 Specifications

Expansion unit
LK-CC100 CC-Link unit
Model

LK-CC100

Designation

CC-Link communication unit dedicated to LK-G5000 Series
Supported CCLink*1 version

Ver. 1.10 (Extended cyclic setting: Single)
Ver. 2.00 (Extended cyclic setting: Double or more)*2

Master unit

CLPA-certified master unit (CC-Link Ver. 2.00/Ver. 1.10)

No. of occupied
1 to 4
stations
Network
connection

Environment
resistance

Communication
speed

156 kbps, 625 kbps, 2.5 Mbps, 5 Mbps, 10 Mbps

Connecting
cable

Dedicated CC-Link cable supporting Ver. 1.10
(Shielded 3-core twisted-pair cable: OP-79426, OP-79427)

Maximum total
cable extension
length

156 kbps: 1200 m
625 kbps: 900 m
2.5 Mbps: 400 m
5 Mbps: 160 m
10 Mbps: 100 m

Station type

Remote device station

Ambient
temperature

When one or less head expansion unit is connected: 0 to +50C
When two or more head expansion units are connected: 0 to +40C

Relative humidity 35 to 85%RH (No condensation)

Rated voltage

24 VDC±10% (supplied from controller)

Current consumption

200 mA max.

Weight

Approx. 300 g

*1 CC-Link is a registered trademark of Mitsubishi Electric Corporation.
*2 The LK-G5000 Series supports the "extended cyclic transmission" and "station-to-station cable
length relaxation" of CC-Link Ver. 2.00.

6-9

6 Specifications

LK-DN100 DeviceNet unit
Model

LK-DN100

Designation

Network
connection

6
Environment
resistance

DeviceNet communication unit dedicated to LK-G5000 Series
Communication
protocol

DeviceNet*1 compliant

Master unit

ODVA-certified master unit

Transmission
speed

500 kbps, 250 kbps, 125 kbps

Device type

Generic

Transmission
medium

Dedicated 5 cables (2 signal cables, 2 power supply cables, 1 shielding
cable)

Thick cable: 500 m (at transmission speed of 125 kbps)
Maximum trunk
/250 m (at 250 kbps)/125 m (at 500 kbps)
line cable length
Thin cable: 100 m (at all transmission speed settings)
Communication
type

I/O communication (Poll)
Explicit message communication

Power supply

11 VDC to 25 VDC

Current
consumption

10 mA max. (when network power supply 24 V is applied)

Ambient
temperature

When one or less head expansion unit is connected: 0 to +50C
When two or more head expansion units are connected: 0 to +40C

Relative humidity 35 to 85%RH (No condensation)

Rated voltage

24 VDC±10% (supplied from controller)

Current consumption

200 mA max.

Weight

Approx. 300 g

*1 DeviceNet is a registered trademark of ODVA (Open DeviceNet Vendor Association).

6-10

6 Specifications

Head-to-controller cable
Model
Cable length
Weight

CB-A07

CB-A2

CB-A5

CB-A10

CB-A20

CB-A30

0.7 m

10 m

20 m

30 m

Approx. 100 g

Approx. 200 g

Approx. 400 g

Approx. 750 g

Approx. 1400 g Approx. 2000 g

Head-to-controller extension cable
Model
Cable length
Weight

CB-A5E

CB-A10E

10 m

Approx. 400 g Approx. 750 g

6-11

6 Specifications

Status table
Display panel
Measured
value

Measured
value

Normal

Over range
on the positive side FFFFFF
Over range
-FFFFFF
on the negative side
During
Hold
hold

Measuring
mode
Alarm

During
alarm

Comparator
standby
During RESET
operation

-FFFFFF

------

Dark/Bright

Setting mode

System error

At power-on

-----(Starting up
process is
being
checked)

•
•
•

Comparator

Comparator
result

Binary

Measured value

ON
HI
LO
ON

1048575
(0x0FFFFF)
-1048576
(0x100000)

Hold

Varies
HI/LO
depending on
the alarm output ON
simultaneously
type
-1048576
(0x100000)

All OFF

Alarm status

Varies
depending on
the alarm output Alarm status
type

All OFF

Varies
Setting item depending
on the
setting item

Error
display

•

ALARM (N.C.)

HI/LO
ON
simultaneou
sly
-10.8 V
(3.36 mA)

Hold

RS-232C
--COM-Communication communication
(Communication
mode
USB communication mode indication)
LAN

•
•
•
•
•
•

Output

Analog
Comparator
voltage
(current)
Voltage
Comparator (current) with
reference to
result
the measured
value
+10.8 V
HI
(20.64 mA)
-10.8 V
LO
(3.36 mA)

OFF

-10.8 V
(3.36 mA)

Hold

Varies
depending on
the alarm output
type

Hold

-1048576
(0x100000)
OFF

Undefined
value until
measurement
starts

OFF

0
(0x000000)

"ON/OFF" indicates the ON/OFF status of the NPN or PNP open-collector output.
"Hold" represents the status in which the last normal value is being held.
"Setting mode" represents the setting changes using the display panel keys.
"Communication mode" means the setting changes using the RS-232C/USB/LAN communication.
The alarm output turns on when operation is normal and turns off when an error occurs.
The RESET operation is performed after the mode is changed to the measuring mode, the program
number is changed, the auto-zero operation is completed, and the RESET input is provided.
If the RS-232C, USB, or LAN communication is used in the measuring mode, the response speed
slows down.
The RS-232C, USB, and LAN interfaces cannot be used simultaneously.
When the LK-Navigator 2 setup support software is used, the change to the communication mode
and return to the measuring mode are automatically controlled by the software.
When the RS-232C communication is used with the LK-Navigator 2, the refresh rate becomes slow
compared with the rate using the USB or LAN communication.

6-12

6 Specifications

Input
TIMING/
RESET/
P1/P2/P3

RS-232C

ZERO

USB

LAN


X
(Canceling
auto-zero is
possible)



X
(Canceling
auto-zero is
possible)

Measured value
display, received
light waveform
display, data
storage/
measurement
control commands
controlled by LKNavigator 2

Measured value display,
received light waveform
display, data storage
controlled by LK-Navigator
2

6
Alarm status
Error
Setting transmission/
Setting change command Error
Setting transmission Error
X

Setting transmission

Error

•
•
•
•
•
•
•
•

Error

"O" and "X" represent the statuses where input is possible and impossible respectively.
"Setting mode" represents the setting changes using the display panel keys.
"Communication mode" means the setting changes using the RS-232C/USB/LAN communication.
The RESET operation is performed after the mode is changed to the measuring mode, the program
number is changed, the auto-zero operation is completed, and the RESET input is provided.
If the RS-232C, USB, or LAN communication is used in the measuring mode, the response speed
slows down.
The RS-232C, USB, and LAN interfaces cannot be used simultaneously.
When the LK-Navigator 2 setup support software is used, the change to the communication mode
and return to the measuring mode are automatically controlled by the software.
When the RS-232C communication is used with the LK-Navigator 2, the refresh rate becomes slow
compared with the rate using the USB or LAN communication.

6-13

6 Specifications

Response delay time
 Measurement response time
This is the period of time until the LK-G5000 Series recognizes the change in the target
and outputs the signal. This is calculated by the following formula.
Measurement response time
Sampling cycle
Measurement modes other than
(T6)
semi opaque
2.55 μs

T6 x 138 + T4 + 50 μs

5 μs

T6 x 74 + T4 + 50 μs

10 μs

T6 x 41 + T4 + 50 μs

20 μs

T6 x 25 + T4 + 50 μs

50 μs

T6 x 16 + T4 + 50 μs

100 μs
200 μs

Measurement mode of semi
opaque

500 μs

T6 x 10 + T4 + 100 μs

1000 μs

T6 x 13 + T4 + 100 μs
T6 x 13 + T4 + 100 μs
T6 x 11 + T4 + 100 μs

• For details about the sampling cycle (T6) and reset time (T4), refer to "Timing details"
(page 4-26).
• When the mutual interference prevention function is used, the sampling cycle T6 is
calculated as T6 x 2 (for AB_ON) or T6 x 3 (for ABC_ON).
• When "Velocity" is selected for the measurement type, T4 is calculated as T4 + T6; when
"Acceleration" is selected, T4 is calculated as T4 + 2 x T6.
 Power ON reset time
This is the period of time until measurement starts after the LK-G5000 Series is turned on.
• Power ON reset time when only the controller is used: Approx. 7 seconds
• When 10 head expansion units are connected to the controller: Approx. 17 seconds

6-14

6 Specifications

Dimensions
Controller
LK-G5001V/LK-G5001PV

(65)

128

124

6
34.5

79.5

4 × M4
Depth: 6

LK-G5001/LK-G5001P
65

(65)

105.5

62.1

35.9

124

DIN rail

79.5

4 × M4
Depth: 6

6-15

6 Specifications

LK-HD500

62min.
Panel thickness:
0.5 to 5 mm
13

Display panel
attachment ring

100min.

91
80

74.5

75 0

+0.6

62
46

+0.6

45 0

8.5
25

Panel cutout

6-16

6 Specifications

LK-HA100

26.3

(65)

105.5

62.1

35.9

124

DIN rail

13.5

M4
Depth: 6

(65)

128

13.5

124

26.3

114

M4
Depth: 6

6-17

6 Specifications

Sensor head
 LK-H008/H008W

500

ø14

31.2
13.5

0.5

13.5 max.
57.5

73.5

Laser radiation
warning indicator

2 x ø4.4
(mounting
hole)

11.8

ø7

22.8
12.7

90°

12.3
27.5

 LK-H020/H025/H023/H028/H022/H027/H022K/H027K

500

ø14

Laser radiation warning indicator

75.9

ø7

66.6

4.6

13.4

77.7

89 max.

40°

2 x ø4.4
(mounting
hole)

9.2
4.4

12.2
51.4
60

6-18

16.1

4.4

22.8

55.4

53.4

0.5

13 max.

33.4

40°
35.8

6 Specifications
 LK-H050/H055/H053/H058/H052/H057/H052K/H057K

500

ø14

74.8

ø7
10.1 max.

7.7 max.

Laser radiation warning indicator

13.4

2 x ø4.4
(mounting
hole)

4.4

10.1

89.9 max.

59.9

68.5

0.5

37.6
22.1

30°
12.2

9.2
68

7.7 max.

33.4

46.3

30°

37.4

6-19

6 Specifications
 LK-H080/LK-H085/LK-H082/LK-H087

500

φ14

7.7max.

LASER ON/
STABILITY LED

10.1max.

35.4

13.5

2xφ4.4
(Mounting hole)

22.7

90.5max.

4.4

61.4

0.5

80.3

φ7

24°

76.7

24°

9.2

12.3

6-20

7.7max.

33.5

38.5

6 Specifications
 LK-H150/LK-H155/LK-H152/LK-H157

500

φ14

φ7

86.6

33.3

20.2

20.6 10.1

4.2

6.8

67.3

76.8
76.2
68

2xφ4.4
(Mounting hole)

84.3

82.2
LASER ON/
STABILITY LED

8.2

17°

17°
112.5 to 182.5

110 to 190

6-21

6 Specifications

Expansion unit
 LK-CC100

26.3

(13.2)

105.5

62.1

35.9

124

DIN rail

13.5

M4
Depth: 6

(3.2)

128

(13.2)

13.5

(3.2)

124

26.3

114

6-22

M4
Depth: 6

6 Specifications
 LK-DN100

26.3

(13.2)

105.5

62.1

35.9

124

DIN rail

(3.2)

13.5

M4
Depth: 6

14
128

(13.2)

13.5

(3.2)

124

26.3

114

M4
Depth: 6

6-23

6 Specifications

Other accessory
 Head-to-controller cable CB-A07/CB-A2/CB-A5/CB-A10/CB-A20/CB-A30

ø7
Cable length: 0.7 m, 2 m, 5 m, 10 m, 20 m, 30 m

ø14

55
26

11.5

 Head to controller extension cable CB-A5E/CB-A10E

ø7 Cable length (5 m, 10 m)
ø14

6-24

ø14

6 Specifications

Characteristics
Beam spot diameter
 LK-H008

 LK-H008W

mm
0.5

40µ

m×6

0.5

0µm

mm
0.5

45µ

490

0.5

ø20
µ

µm

20µ

550

µm

40µ

m×9

45µ

0µm

610

µm

6
 LK-H020/LK-H023/LK-H022/LK-H022K  LK-H025/LK-H027/LK-H027K/LK-H028

m
20 m )
mm 3 mm )
(16.1
mm
(2.8
ø27

3 mm m)
m
(2.8
ø25

ø27

0 µm

µm

0 µm

Dimensions in ( ) indicate the reference distance
and measurement range for specular reflection
mounting.

m
20 mmm)
3 mmmm)
(16.1
(2.8

150

3 mm mm)
(2.8
130
25 µ
270

140
µm

270
0 µm

µm

0 µm

Dimensions in ( ) indicate the reference distance
and measurement range for specular reflection
mounting.

6-25

6 Specifications
 LK-H050/LK-H052/LK-H053/LK-H052K  LK-H055/LK-H057/LK-H058/LK-H057K
m
10 m m)
m
(5.2

m
50 m m)
m
m
10 m m)
(46.3
m
(5.2

Ø46

0 µm

Ø50

µm

m
10 m m)
m
(5.2

m
50 m m)
m
m
10 m m)
(46.3
m
(5.2

200

Ø46

0 µm

400

210

400

190
50 µ

0 µm

µm

0 µm

µm

0 µm

Dimensions in ( ) indicate the reference distance and Dimensions in ( ) indicate the reference distance and
measurement range for specular reflection mounting. measurement range for specular reflection mounting.

 LK-H080/LK-H082

m
80m )
m
.7m
(76

m )
18m .6mm
(17
530
μm

 LK-H085/LK-H087
m )
18m.6mm
(17
70μ
m

380
μm
70μ
m

220
μm

m
80m )
m
.7m
(76

300
μm

m )
18m .6mm
(17
249

0μ

m )
18m.6mm
(17

340

251

μm

0μ

250
0μ
m
340
μm

70μ

 LK-H150/LK-H152
mm
150 m)
.5m
147

(

m )
40m .5mm
(39
700
μm

 LK-H155/LK-H157
m )
40m.5mm
(39
120
μm
400
μm

480
μm
120
μm

280
μm

mm
150 m)
m
7.5
4
1
(

m )
40m .5mm
(39
378
0μ
m

m )
40m.5mm
(39
420
0μ
m
400
μm

462
0μ
m

400
μm

70μ

6-26

6 Specifications

Mutual interference
No interference occurs if the beam spot of the other sensor is out of the shaded area in the
figures (with white paper target).

LK-H020/LK-H025/LK-H023/LK-H028/LK-H022/LK-H027/LK-H022K/LK-H027K

23.3
16.7

2.2

8.8

4.1

±1.5

8.4

LK-H050/LK-H055/LK-H053/LK-H058/LK-H052/LK-H057/LK-H052K/LK-H057K

15.1

10.7

±2

6-27

6 Specifications

14.6

99.8

60.2

LK-H080/LK-H085/LK-H082/LK-H087

21.4

6-28

0.5

±2.5

6 Specifications

LK-H150/LK-H155/LK-H152/LK-H157

192

44
15.1

7 10.7

±2
5

6-29

6 Specifications

Optical axis range
The detection is not affected if an interfering object is out of the shaded area in the figures.

LK-H008/LK-H008W

27.9
18.4

1.5

2.9

8.5

5.6

2
12.3

31.2

LK-H020/LK-H025/LK-H023/LK-H028/LK-H022/LK-H027/LK-H022K/LK-H027K

22.6

23.3

7.5
12.2

7.7

6-30

6 Specifications

LK-H050/LK-H055/LK-H053/LK-H058/LK-H052/LK-H057/LK-H052K/LK-H057K

34.9

9.6

12.2

7.7

6
3

6-31

6 Specifications

LK-H080/LK-H085/LK-H082/LK-H087

43.8

14.1

12.3

99.8

7.7

6-32

6 Specifications

LK-H150/LK-H155/LK-H152/LK-H157

6-33

6 Specifications
MEMO

6-34

Appendices

Troubleshooting .................................................................... A-2
Error Codes .......................................................................... A-5
List of Optional Accessories ................................................. A-7
Relationship Between the Sampling Cycle and Velocity/
Acceleration Measurement Range.................................. A-11

Index .................................................................................. A-12

A-1

Troubleshooting
This section describes the countermeasures against errors or problems that may occur
during the operation of the LK-G5000 Series.
Problem

Possible Cause

Countermeasure

Nothing is displayed on the Is the display panel cable properly
display panel.
connected to the controller?
Is the power supply cable properly
connected?

Connect the power supply cable and display
panel cable properly. (page 1-26)

An error code is displayed.

Address the problem by following the instruction
provided for the displayed error code. (page A5)

A measured value is not
displayed.

Is the measurement target placed
within the measurement range?

Place the measurement target properly within
the measurement range.(page 1-12, page 1-13)

Are the head settings properly set?

Adjust to the proper settings. (page 3-3)

Is the glass cover dirty?

Remove the dust and dirt.

Does the glass cover have any flaws
or cracks?

The glass cover must be replaced. Because this
replacement requires KEYENCE repair service,
contact your nearest KEYENCE office.

Is the synchronization control properly Set the synchronization control according to the
set according to the measurement
measurement mode. (page 3-62)
mode?

The laser beam is not
emitted.

Does condensation occur in the unit?

Check the installation environment. (page 1-3)

Is the head-to-controller cable
properly connected?
Is the power supply cable properly
connected?

Connect the head-to-controller cable and the
power supply cable properly. (page 1-26)

Are the laser remote interlock input
and the laser OFF input provided
properly?

Provide these inputs properly. (page 1-10)

Are the LASER CTRL terminal and
LASER CTRL group set properly?

Adjust to the proper settings. (page 1-10, page
3-20)

Is the active head count set properly? Adjust to the proper setting. (page 3-79)
Is the problematic sensor head
assigned to any OUT?
The laser beam is not
emitted.
(continued)

Assign the sensor head to be used to a certain
OUT. (page 3-28)

Is the problematic sensor head
Change the setting to ABC-ON or assign the
assigned to group C while the mutual sensor head to group A or B. (page 3-60)
interference prevention is set to ABON?
Is the operation of the specified
Set the sampling cycle which allows the
measurement mode possible with the operation of the specified measurement mode.
specified sampling cycle setting?
(page 3-58)

A-2

Problem

Possible Cause

The measured value display Is the number of averaging
fluctuates.
measurements properly set?

Countermeasure
Set the number of averaging measurements
properly. (page 3-33)

Is the glass cover dirty?

Remove the dust and dirt.

Does the glass cover have any flaws
or cracks?

The glass cover must be replaced. Because this
replacement requires KEYENCE repair service,
contact your nearest KEYENCE office.

Are there any water or oil splashes in
the operating atmosphere?

Use air purge or another method to remove the
splashes.

Does mutual interference occur?

Use the mutual interference prevention function
or the laser OFF function. (page 1-10, page 360)
Change the mounting position of the sensor
head.

Is there strong ambient light?

Block the ambient light.

Does the measurement target or
sensor head vibrate?

Take appropriate countermeasures such as
vibration isolation.

Are the head settings properly set?

Adjust to the proper settings. (page 3-3)

The measured value display Is the measurement target slanted or
deviates.
displaced?
Is the LK-G5000 Series calibrated
properly?

Place the measurement target properly within
the measurement range. (page 1-12, page 1-13)
Calibrate the unit again. (page 3-31)

Does the temperature in the operating Keep the ambient temperature constant. (page
environment change greatly?
1-10)
Program No. cannot be
changed.

The comparator output is
not output properly.

Is the setting selection properly set?

Set the setting selection according to the
method to be used. (page 3-73)

Is the panel lock set to ON?

Change the panel lock setting to OFF. (page 376)

Is the LK-G5000 Series in either the
setting mode or the communication
mode?

Change the mode to the measuring mode.

Is the wiring correct?

Check the output circuit and wiring, and ensure
proper connection.

Is the tolerance properly set?

Set the tolerance again. (page 2-4)

Is the comparator output form properly Adjust to the proper setting. (page 3-63)
set?
The analog output is not
output properly.

Is the wiring correct?

Check the wiring and ensure proper connection.

Does the voltage exceed +10.8 V or
drop below -10.8 V?

Set the analog scaling properly according to the
measured value. (page 3-50)

Is an oscilloscope or a high-speed A/ The resolution may decrease when these
D board used?
devices are used. Change the analog scaling
setting to minimize the influence.

A-3

Problem
The binary output is not
output properly.

Possible Cause

Check the output circuit and wiring, and ensure
proper connection.

Is the logic properly set?

The LK-G5000 Series uses negative logic for
output.

Is the import timing properly set?

Use strobe output to enable importing with
proper timing. (page 4-15)

Is the binary selection input provided
properly?

Provide the input properly. (page 4-11)

The RS-232C
Is the communication cable properly
communication is disabled. connected?

A
The operation key does not
work.

The LAN communication is
disabled.

Countermeasure

Is the wiring correct?

Connect the communication cable properly.
(page 5-4)

Is the communication cable
connected according to the
specifications?

Check the connection of the communication
cable. (page 5-4)

Are the communication parameters
properly set?

Set the same communication parameters
between the LK-G5000 Series and the external
device. (page 5-4)

Is the communication program
correct?

Check that the commands and delimiters are
sent and received properly.
(page 5-5)

Is the setting correct for the
communication method and external
device?

Set the automatic transmission properly.
(page 3-72)

Is any item being set?

The communication is disabled during setting.

Is the display panel properly
connected?

Connect the display panel properly.
(page 1-26)

Is the panel lock set to ON?

Set the panel lock to OFF. (page 3-76)

Are the IP address and subnet mask
properly set?

Adjust to the proper settings. (page 3-81)

Is a cross cable used when the LKG5000 Series is directly connected
with a PC?

Use a cross cable for direct connection with a
PC.

Is the PC connected using one-to-one To establish LAN connection with a PC, use oneconnection or local connection?
to-one connection or local connection which
includes only the PC and the LK-G5000 Series
units.

A-4

Error Codes
This section lists the error codes displayed by the LK-G5000 Series and the
countermeasures.
Display

System Error description
error

Countermeasure

Err-00



Head connection error

Err-01 to 12



Head 01 to 12 error

Err-13



Controller error

Turn off the power once and turn it on again.
If the error continues, contact your nearest KEYENCE
office.

Err-14



Display panel
communication error

Check the connection with the display panel.

Err-15



Controller SRAM error

Turn off the power once and turn it on again, or initialize
the settings.
If the error continues, contact your nearest KEYENCE
office.

Err-16



USB communication error Turn off the power once and turn it on again.
If the error continues, contact your nearest KEYENCE
office.

Err-17



Ethernet communication
error

Turn off the power once and turn it on again.
If the error continues, contact your nearest KEYENCE
office.

Err-18



Expansion unit error

Turn off the power once, disconnect the expansion unit
and connect it again, and then turn on the power again.
If the error continues, contact your nearest KEYENCE
office.

Err-30 to 39



Head expansion unit error Turn off the power once, disconnect the head expansion
unit and connect it again, and then turn on the power
again.
If the error continues, contact your nearest KEYENCE
office.

Check the sensor head connection.
If there are errors with two or more sensor heads, the
smallest error number among Err-01 to 12 is displayed.

Err-50

Command error

The received command is not defined for the RS-232C
communication.
Check the command you sent.

Err-51

Status error

Operation through the RS-232C communication is not
available (e.g., a measurement control command was
received in the communication mode).
Check the mode and the command you sent.

Err-60

Command length error

The command or parameter received through the RS232C communication has an insufficient number of
characters. Check the command you sent.

Err-61

Parameter count error

The command received through the RS-232C
communication has insufficient parameters. Check the
command you sent.

A-5

Display

System Error description
error

Countermeasure

Err-62

Parameter range error

The setting value received through the RS-232C
communication is out of the possible setting range.
Check the command you sent.

Err-63

Parameter range error
(OUT calculation count
limitation)

The repeated use of an OUT value in OUT calculation
exceeds the limit. Check the command you sent.

Err-64

Parameter range error
(OUT/Head No.)

The number of sensor heads or OUT being used
exceeds the active head/OUT count.
Check the setting.

Err-65

Parameter range error
(Velocity/acceleration
calculation method)

The OUT set to the measurement type of "Velocity" or
"Acceleration" was set to OUT for another measurement
type or to AVE/P-P/MAX or other calculation between
OUT.
Check the setting.

Err-66

Parameter range error
(OUT specification)

The calculation range set for a certain OUT includes the
OUT itself, or no target OUT has been set for the AVE/PP/MIN/MAX calculation.

Err-67

Parameter range error
(Sampling cycle)

The specified sampling cycle is faster than the fastest
sampling cycle available based on the active OUT
count, active head count, measurement mode, and
calculation method. Select a slower sampling cycle or
change other parameters.

Err-68

Parameter range error
(Scaling)

The specified scaling parameters do not satisfy the
following conditions:
• Input value 1 - Input value 2  0
• |(Displayed value 2 - Displayed value 1)/(Input value 2
- Input value 1)|  2

Err-69

Parameter range error
(Analog output scaling)

The specified analog output scaling parameters do not
satisfy the following conditions:
• Input value 1 - Input value 2  0
• |(Output voltage value 2 - Output voltage value 1)/
(Displayed value 2 - Displayed value 1)|  10

Err-70

Parameter range error
(Number of data to be
stored)

The specified number of data to be stored exceeds the
possible setting range.

Err-71

Parameter range error
(OUT specified for data
storage)

The number of OUT for which data is stored exceeds the
active OUT count.

Err-88

Timeout error

No delimiter CR has been received for 30 seconds or
more since the LK-G5000 Series started receiving
commands through the RS-232C communication.
Check the command you sent and the communication
program.

Err-99

Other error

Contact your nearest KEYENCE office.

* If you cannot resume the LK-G5000 Series after taking the above countermeasures or if you
encounter an error which is not listed in the table, contact your nearest KEYENCE office.

A-6

List of Optional Accessories
The following table lists the optional accessories supported by the LK-G5000 series.
Name

Model

Display panel housing

LK-F2
(LK-H150/155/
152/157)

Appearance

Description
Used when the mirror surface is
measured at a mirror reflection
setup.
(M1.6 x 3 countersink-head screw
x 2)

LK-F3
(LK-H80/85/
82/87)

Display panel housing

OP-84426

Used to combine the display
panel (LK-HD500) and controller
(LK-G5001/LK-G5001P).

Display panel
cable

33 cm

OP-84427

OP-51655

A cable used to connect the
display panel (LK-HD500/LKHD1001) and controller (LKG5001/LK-G5001P).

10 m

OP-51656

Expansion connector cable OP-51657
(3 m)

A cable for the expansion
connector (3 m).

RS-232C cable

A communication cable for RS232C (2.5 m).

OP-96368

A-7

Name

Model

Appearance

RS-233C conversion
adapter

OP-96369

USB cable

OP-66844

A cable for USB connection (2
m).

Key-operated switch

OP-86982

Key-operated switch for laser
emission control

Ethernet cable

OP-66843

Cross cable (3m) for Ethernet
communication

1
40
26
PO

OP-26401

9
36
96
PO

Description

RS-232C conversion
adapter

A-8

A conversion adapter for a D-sub
9-pin connector. This connector
is used in combination with the
OP-96368.
A conversion adapter for a D-sub
25-pin connector. This connector
is used in combination with the
OP-96368.

Type of Measurement and Sampling frequency
When the type of measurement is Velocity or Acceleration, the range to display the
measured value is determined according to the settings of minimum display unit,
sampling frequency and mutual intervention prevention function.
 : Possible to display measured values
- : Measured value displayed as -FFFFFF
 When the Acceleration mode is selected
LK-H008 Series/LK-H02* Series
Sampling
frequency [µs]
2.55
5
5.1
7.65
10
15
20
30
40
50
60
100
150
200
300
400
500
600
1000
1500
2000
3000

±99.9999
[m/s2]














±999.999
[m/s2]


















±9999.99
[m/s2]






















±99999.9
[m/s2]























±999.999
[km/s2]























±9999.99
[km/s2]









-

±99999.9
[km/s2]





-

2.55µs Mutal intervention prevension function OFF
5µs Mutal intervention prevension function OFF
2.55µs Mutal intervention prevension function AB-ON
2.55µs Mutal intervention prevension function ABC-ON
10µs Mutal intervention prevension function OFF
5µs Mutal intervention prevension function AB-ON
20µs Mutal intervention prevension function OFF
10µs Mutal intervention prevension function ABC-ON
20µs Mutal intervention prevension function AB-ON
50µs Mutal intervention prevension function OFF
20µs Mutal intervention prevension function ABC-ON
100µs Mutal intervention prevension function OFF
50µs Mutal intervention prevension function ABC-ON
200µs Mutal intervention prevension function OFF
100µs Mutal intervention prevension function ABC-ON
200µs Mutal intervention prevension function AB-ON
500µs Mutal intervention prevension function OFF
200µs Mutal intervention prevension function ABC-ON
1000µs Mutal intervention prevension function OFF
500µs Mutal intervention prevension function ABC-ON
1000µs Mutal intervention prevension function AB-ON
1000µs Mutal intervention prevension function ABC-ON

±99999.9
[km/s2]








-

Remark

LK-H05* Series/LK-H08* Series/LK-H15* Series
Sampling
frequency [µs]
2.55
5
5.1
7.65
10
15
20
30
40
50
60
100
150
200
300
400
500
600
1000
1500
2000
3000

±99.9999
[m/s2]
-

±999.999
[m/s2]















±9999.99
[m/s2]


















±99999.9
[m/s2]






















±999.999
[km/s2]























±9999.99
[km/s2]





















-

Remark

A-9

 When the Velocity mode is selected
LK-H008 Series/LK-H02* Series
Sampling
frequency [µs]
2.55
5
5.1
7.65
10
15
20
30
40
50
60
100
150
200
300
400
500
600
1000
1500
2000
3000

±99.9999
[mm/s]












±999.999
[mm/s]



















±9999.99
[mm/s]























±99999.9
[mm/s]























±999.999
[m/s]























±9999.99
[m/s]











-

±99999.9
[m/s]




-

Remark
2.55µs Mutal intervention prevension function OFF
5µs Mutal intervention prevension function OFF
2.55µs Mutal intervention prevension function AB-ON
2.55µs Mutal intervention prevension function ABC-ON
10µs Mutal intervention prevension function OFF
5µs Mutal intervention prevension function AB-ON
20µs Mutal intervention prevension function OFF
10µs Mutal intervention prevension function ABC-ON
20µs Mutal intervention prevension function AB-ON
50µs Mutal intervention prevension function OFF
20µs Mutal intervention prevension function ABC-ON
100µs Mutal intervention prevension function OFF
50µs Mutal intervention prevension function ABC-ON
200µs Mutal intervention prevension function OFF
100µs Mutal intervention prevension function ABC-ON
200µs Mutal intervention prevension function AB-ON
500µs Mutal intervention prevension function OFF
200µs Mutal intervention prevension function ABC-ON
1000µs Mutal intervention prevension function OFF
500µs Mutal intervention prevension function ABC-ON
1000µs Mutal intervention prevension function AB-ON
1000µs Mutal intervention prevension function ABC-ON

LK-H05* Series/LK-H08* Series/LK-H15* Series
Sampling
frequency [µs]
2.55
5
5.1
7.65
10
15
20
30
40
50
60
100
150
200
300
400
500
600
1000
1500
2000
3000

A-10

±99.9999
[mm/s]












±999.999
[mm/s]



















±9999.99
[mm/s]























±99999.9
[mm/s]























±999.999
[m/s]























±9999.99
[m/s]











-

±99999.9
[m/s]




-

Relationship Between the Sampling Cycle and
Velocity/Acceleration Measurement Range
The following graphs show the relationship between the sampling cycle and velocity/
acceleration in the velocity/acceleration measurement.

Velocity mode
100000
LK-H008
LK-H020
LK-H050
LK-H085
LK-H155

10000
1000
100
10
1

Velocity 0.1
(m/s)
0.01
0.001

0.0001
0.00001
0.000001
0.0000001
1

100

1000

10000

Sampling cycle (µs): Doubled when the mutual interference prevention function is set to AB-ON; Tripled when the function is set to ABC-ON

Acceleration mode
1000000000
LK-H008
LK-H020
LK-H050
LK-H085
LK-H155

100000000
10000000
1000000
100000
10000
Acceleration
(m/s2)

1000
100
10
1
0.1
0.01
0.001
0.0001

100

1000

10000

Sampling cycle (µs): Doubled when the mutual interference prevention function is set to AB-ON; Tripled when the function is set to ABC-ON

A-11

Index
Number
12-pin terminal block..................... 1-7, 4-2
6-pin terminal block....................... 1-7, 4-4

ABLE calibration..................................3-13
ABLE function........................................3-6
Acceleration ........................................3-53
Active analog output channel count....3-80
Active head count ...............................3-79
Active OUT count ................................3-78
Alarm handling ....................................3-10
Alarm output ..........................................4-8
Alarm output type ................................3-68
Ambient temperature................................ 4
Analog current output..........................4-14
Analog monitor output ...........................4-4
Analog output ......................................3-67
Analog output scaling .........................3-50
Analog scaling.....................................3-50
Analog voltage output .........................4-14
ASCII code ..........................................5-40
Auto-offset function ..................... 2-7, 3-47
Auto-zero function ....................... 2-7, 3-47
Auto-zero input ......................................4-8
Average hold .................... 3-37, 3-40, 4-16
Averaging filter operation ....................3-33

B
Base point ...........................................3-22
Beam spot diameter ............................6-25
Binary output ............................... 4-5, 4-11
Bottom hold ............................... 3-37, 4-16

C
Calculation between the sensor heads ..3-28
Calculation method .............................3-28

A-12

CC-Link communication unit ...............1-25
CE Marking............................................... 6
Characteristics ....................................6-25
Combining the separate type controller
............................................. 1-21, 1-23
Command format...................................5-5
Communication parameters ..................5-3
Comparator output ................................4-8
Comparator output form ......................3-63
Comparator standby .............................2-4
Connection
Connecting the display panel .......1-27
Connecting the power supply .......1-27
Connecting the sensor head .........1-26
Connecting to the terminal block ..1-27
Controller specifications........................6-2

D
Data storage function ..........................3-65
DeviceNet communication unit ...........1-25
Diffuse reflection........................ 1-12, 3-15
Dimensions..........................................6-15
Displacement ......................................3-53
Display panel.........................................1-6
Display panel connector .......................1-7
Dual display...........................................2-2

E
ENV......................................................3-69
Environment settings ................. 1-30, 3-69
Error codes........................................... A-5
Ethernet connector ................................1-7
External synchronization .....................5-38
External synchronous input .................3-62

F
Filter.....................................................3-33

G
General mode........................................5-3
GO .........................................................2-4

H
Head expansion unit ................... 1-8, 1-23
Head settings .............................. 1-30, 3-3
Height difference measurement..........3-28
HIGH......................................................2-4
High-pass filter operation ....................3-35
Hold function .......................................3-37
Hysteresis..............................................2-6

List of the Environment settings screens ...3-71
List of the Head settings screens..........3-5
List of the OUT settings screens .........3-27
LK-CC100............................................1-25
LK-DN100............................................1-25
LK-HA100 .................................... 1-8, 1-23
LOW.......................................................2-4
Low-pass filter operation .....................3-35

I/O terminals ..........................................4-2
Initializing.............................................1-31
Initializing the settings to the factory
default settings ..............................1-31
Input response time.............................4-26
Installation environment............................ 4
Insufficient light intensity .....................3-10

Mask setting ........................................3-16
Measured value format..........................5-6
Measurement averaging time..............4-27
Measurement control command format ...5-8
Measurement control input/output ........4-8
Measurement mode ............................3-37
Measurement mode, setting..................3-9
Measurement type...............................3-53
Measurement value output conditions ...3-24
Median.................................................3-18
Minimum display unit...........................3-48
Minimum input time .............................4-26
Mode change command .......................5-7
Mode selection ....................................1-29
Mounting mode ...................................3-15
Mounting the controller........................1-17
Mounting the separate type
controller..................................1-18
Mounting the single unit type
controller..................................1-18
Mounting the sensor head...................1-10
Mutual interference..............................6-27
Mutual interference prevention............3-60
Mutual interference prevention function ..3-60

K
Key-operated switch .............................. 13

L
LAN setting..........................................3-81
LASER CTRL group.............................3-20
LASER CTRL terminals........................... 13
List of functions and function Nos.
(Common function)........................3-55
List of functions and function Nos.
(Environment settings)...................3-69
List of functions and function Nos.
(Head settings)................................3-3
List of functions and function Nos.
(OUT settings) ...............................3-24
List of initial values and setting ranges
(Common function)........................3-56
List of initial values and setting ranges
(Environment settings)...................3-70
List of initial values and setting ranges
(Head settings)................................3-4
List of initial values and setting ranges
(OUT settings) ...............................3-26
List of optional accessories.................. A-7

N
Noise control ............................................ 4
Non-voltage input ................................4-12
Number of display digits .....................3-48
Numerical value setting procedure .......2-5

A-13

Package contents..................................1-3
Panel lock ............................................3-76
Part names and functions......................1-6
Peak hold.......................... 3-37, 3-40, 4-16
Peak-to-peak hold ............ 3-37, 3-40, 4-16
Program...............................................3-74
Program copy and initialization ...........3-74
Program No. change time ...................4-27
Program No. switch input ......................4-9
Program switching...............................3-73

Setting change command ...................5-14
Setting confirmation command format ...5-25
Setting mode .......................................1-30
Setting selection ..................................3-73
Setting the mounting mode .................3-15
Setting value format...............................5-6
Shutter .................................................... 14
Single display ........................................2-2
Single unit type controller......................1-3
Specifications ........................................6-2
Specular reflection ..............................1-12
Status table..........................................6-12
Strobe output time ...............................3-64
Strobe time ..........................................3-64
Switching program Nos.......................2-11
Switching the measurement value
displays ...........................................2-2
Synchronization ...................................3-62
Synchronization setting .......................3-62
System configuration.............................1-2

Range ..................................................3-21
Refresh cycle.......................................4-26
REMOTE terminal ................................... 14
RESET time..........................................4-27
Response delay time...........................6-14
RS-232C ...................................... 3-72, 5-1
RS-232C communication parameters
............................................. 3-72, 3-81

Thickness measurement .....................3-28
Timing diagram ...................................4-15
Tolerance comparator result output form ..3-63
Tolerance comparator setting, function ...2-4
Tolerance comparator value setting......2-4
Translucent object.................................3-8
Transparent object ................................3-8
Transparent object 2 .............................3-8
Trigger .................................................3-45
Trigger condition .................................3-45
Troubleshooting.................................... A-2

Offset ...................................................3-47
Open-collector output .........................4-13
Operation keys ......................................1-6
OPTION ...............................................3-55
OUT .....................................................3-24
OUT settings........................................1-30
Output format ......................................5-40

S
Sample hold ..................... 3-37, 3-42, 4-16
Sampling cycle....................................3-58
Scaling.................................................3-31
Sensor (receiver) ...................................1-9
Sensor (transmitter) ...............................1-9
Sensor head specifications ...................6-4
Separate type controller ........................1-3
Separate type display panel .................1-4
Separating the single unit type controller ..1-19

A-14

U
USB connector ......................................1-7

V
Velocity ................................................3-53
Voltage input .......................................4-13

W
Warning labels........................................ 14

A-15

Revision History
Date of printing

Version

Revision details

March 2009

First edition

96M00415 0039-2

May 2009

Second edition

(96M00604 0059-1)
P.1-24 Addition of notes regarding wiring.

October 2009

Third edition

STROBE output was added to pages 4-15, 4-19, and
4-21

November 2009

Second revision,
first edition

LK-H008/H008W added

January 2010

Third revision,
first edition

LK-H085/H087, LK-H155/H157 added

March 2010

Fourth revision,
first edition

LK-H080/H082, LK-H150/H152 added

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(1) KEYENCE warrants the Products to be free of defects in materials and workmanship for a
period of one (1) year from the date of shipment. If any models or samples were shown to
Buyer, such models or samples were used merely to illustrate the general type and quality of
the Products and not to represent that the Products would necessarily conform to said
models or samples. Any Products found to be defective must be shipped to KEYENCE with
all shipping costs paid by Buyer or offered to KEYENCE for inspection and examination.
Upon examination by KEYENCE, KEYENCE, at its sole option, will refund the purchase price
of, or repair or replace at no charge any Products found to be defective. This warranty does
not apply to any defects resulting from any action of Buyer, including but not limited to
improper installation, improper interfacing, improper repair, unauthorized modification,
misapplication and mishandling, such as exposure to excessive current, heat, coldness,
moisture, vibration or outdoors air. Components which wear are not warranted.
(2) KEYENCE is pleased to offer suggestions on the use of its various Products. They are only
suggestions, and it is Buyer's responsibility to ascertain the fitness of the Products for
Buyer's intended use. KEYENCE will not be responsible for any damages that may result
from the use of the Products.
(3) The Products and any samples (Products/Samples) supplied to Buyer are not to be used
internally in humans, for human transportation, as safety devices or fail-safe systems, unless
their written specifications state otherwise. Should any Products/Samples be used in such a
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whatsoever arising out of any misuse of the Products/Samples.
(4) OTHER THAN AS STATED HEREIN, THE PRODUCTS/SAMPLES ARE PROVIDED WITH NO
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Title                           : High-speed, High-accuracy Laser Displacement Sensor LK-G5000 Series User's Manual 96M11282
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High Speed, Accuracy Laser Displacement Sensor LK G5000 Series User's Manual 96M11282 Lkseries

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