Delta Electronics Dtc1000 Series Users Manual 5011635004 DCE4

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2015-01-24

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http://www.delta.com.tw/industrialautomation/
Temperature Controller
Instruction Sheet
Thank you very much for purchasing DELTA DTC1000/2000 Series Temperature Controller. Please read this
instruction sheet before using your DTC1000/2000 series to ensure proper operation, and please keep this instruction
sheet handy for quick reference.
Caution
DANGER! Caution! Electric Shock!
DTC1000/2000 series is an OPEN-TYPE device and therefore should be installed in an enclosure free of airborne
dust, humidity, electric shock and vibration. The enclosure should prevent non-maintenance staff from operating the
device (e.g. key or specific tools are required to open the enclosure) in case danger and damage on the device may
occur.
WARNING!
1. Prevent dust or metallic debris from falling into the controller that will cause malfunction. DO NOT modify or
disassemble the controller. DO NO use extra terminals.
2. Do not install and/or use the controller in places subject to:
dust or corrosive gases and liquid high humidity and high radiation vibration and shock
3. Switch off the power when wiring or changing input sensors.
4. Be sure to use compensating wires that match the thermocouple types when extending or connecting the
thermocouple wires.
5. Shorten the wire when wiring a platinum resistance thermometer (RTD) to the controller, and separate power cable
from load wires to prevent interference and conductive influence.
6. Make sure the power cable and signals device are installed correctly before switching on the power of
DTC1000/2000; otherwise serious damage may occur.
7. DO NOT touch the terminals or repair the controller when the power is on to prevent electric shock.
8. Wait at least one minute after the power is off to allow the capacitor to discharge. DO NOT touch any inter
nal circuit
within this period.
9. DO NOT touch the internal terminals no matter the power is on or off.
10. DO NOT place other heating source (e.g. power supply) in parallel with DTC1000/2000 during the installation.
Please keep proper space in between.
Model Name Explanation
DTC
1234
5
Series name DTC: Delta C series temperature controller
1 Controller position
1: First controller
2: Controller connected in parallel
2 Auxiliary output
groups
0: standard, 2 outputs, no auxiliary output
1: 1 auxiliary output. Not available now.
2: 2 auxiliary outputs. Not available now.
3 4 Optional
00: Standard
01: CT input. Not available now.
02: EVENT input. Not available now.
5 Main output type
R: Relay output SPST, 250VAC, 3A
V: Voltage pulse output 12V +10% ~ -20%
C: Current output 4 ~ 20mA
L: Linear voltage output 0 ~ 10V
Enclosed functions: DC24V input, 2 outputs, relay output for output 2, RS-485 communication.
Function & Specification
Power supply DC24V. Isolated switching power
Voltage range Rated voltage: 90% ~ 110%
Power consumption Rated 24 VDC, Max. 24 W combined, 3W + 3W x number of DTC2000 controllers (Max. 7)
Thermocouple: K, J, T, E, N, R, S, B, L, U, TXK
Platinum RTD: Pt100, JPt100
Input sensors
Linear DC input: 0 ~ 5V, 0 ~ 10V, 0 ~ 20mA, 4 ~ 20mA, 0 ~ 50mV
Sampling rate Analog input: 0.15 sec. Thermocouple or platinum RTD: 0.4 sec.
Control method PID , programmable PID, Manual, ON/OFF
Relay: SPST, Max. load 250VAC, 3A resistive load
Voltage pulse: 12VDC, Max. output current: 40mA
Current: DC 4 ~ 20mA (Load resistance: < 500)
Output types
Analog voltage: 0 ~ 10V (Load resistance: > 1,000)
Output function Control output, alarm output, proportional output
Proportional output is available only when output 1 is linear voltage/current output.
Alarm 12 alarm modes
Communication RS-485 digital communication, 2,400bps ~ 38,400bps
Communication protocol
Modbus protocol, ASCII/RTU format
Internal connection Internal terminals available to transmit 24V power supply and communication signals
Vibration resistance 10 ~ 55Hz, 10m/s2 for 10mins, each in X, Y and Z direction
Shock resistance Max. 300m/s2, 3 times in each 3 axes, 6 directions
Ambient temperature 0 ~ 50°C
Storage temperature -20 ~ +65°C
Altitude < 2,000m
Ambient humidity 35% ~ 85% RH (non-condensing)
Pollution degree 2
Product Profile & Outline
DTC1000R/V/C/L
1 RUN/STOP switch
2 Wiring and Model name
3 DIN rail clip
4 I/O terminals
5 LED indicators
6 Mounting hole
7 Specification label
8 Extension port
9 Extension clip
10
DIN rail
11
RS-485 communication port
12
Extension clip
13
DC power input
9
0
.
0
3
.
0
60.03.4
25.2
4.0
3
.
0
1
2
3
4
5
6
7
8
9
10
3
11
12
13
DTC2000R/V/C/L
1 Wiring and Model name
2 DIN rail clip
3 I/O terminals
4 LED indicators
5 Mounting hole
6 Specification label
7 Extension port
8 Extension clip
9 DIN rail
9
0
.
0
3
.
0
60.03.4
25.2
4.0
3
.
0
1
2
3
4
5
6
7
8
9
2
10
10
Extension port
Input
DTC1000/2000 series supports the following input sensors:
Input Sensor Register Value Available Range
0 ~ 50mV linear voltage input 17 0 ~ 50mV
4 ~ 20mA linear current input 16 4 ~ 20mA
0 ~ 20mA linear current input 15 0 ~ 20mA
0 ~ 10V linear voltage input 14 0 ~ 10V
0 ~ 5V linear voltage input 13 0 ~ 5V
Platinum RTD (Pt100) 12 -200 ~ 600°C (-328 ~ 1,112°F)
Platinum RTD (JPt100) 11 -20 ~ 400°C (-4 ~ 752°F)
Thermocouple TXK type 10 -200 ~ 800°C (-328 ~ 1,472°F)
Thermocouple U type 9 -200 ~ 500°C (-328 ~ 932°F)
Thermocouple L type 8 -200 ~ 850oC (-328 ~ 1562°F)
Thermocouple B type 7 100 ~ 1,800°C (212 ~ 3,272°F)
Thermocouple S type 6 0 ~ 1,700°C (32 ~ 3,092°F)
Thermocouple R type 5 0 ~ 1,700°C (32 ~ 3,092°F)
Thermocouple N type 4 -200 ~ 1,300°C (-328 ~ 2,372°F)
Thermocouple E type 3 0 ~ 600°C (32 ~1,112°F)
Thermocouple T type 2 -200 ~ 400°C (-328 ~ 752°F)
Thermocouple J type 1 -100 ~ 1,200°C (-148 ~ 2,192°F)
Thermocouple K type 0 -200 ~ 1,300°C (-328 ~ 2,372°F)
Note 1: The current input is built-in with 249 precision resistor. See “How To Set up Current Input” section.
Note 2: Default setting: Pt100 input.
The range of linear input and feedback value is adjustable. Range of input feedback: -999 ~ 9,999. Take 0 ~ 20mA input
as example, -999 refers to 0mA input, and 9,999 refers to 20mA input. If we change the range to 0 ~ 2,000, 0 will refer to
0mA input, and 2,000 will refer to 20mA input. 1 display scale = 0.01mA.
Output
There are several output types available from DTC1000/2000 series: Control Output (heating/cooling), Alarm Output
and Proportional Output.
y Control Output
DTC1000/2000 series offers 2 outputs for heating or cooling control. If you require dual loop output, the 2 outputs
should be set to different actions (heating or cooling). If you require the 2 outputs are set to the same control action, only
the control cycle of output 1 will be valid, and the 2 outputs will act at the same time.
The control methods include: PID control, ON/OFF control, Manual control and programmable PID control.
y Single Output Control
Heating hysteresis
ON
OFF PV
Figure1: ON/OFF Control
Cooling hysteresis
Heating Cooling
Set Point Set Point
PV
100%
0
Heating
Output
PV
100%
0
Output
Set Point
Cooling
Set Point
Figure 2: PID Control, Cooling) Control
Figure 3: PID Control, Heating Control
y Dual Output Control
OFF PV
Set Point
ON
Heating
Deadband
Heating hysteresis
Figure 4: ON/OFF Control
Cooling hysteresis
Cooling
Deadband: Dead
Bandwidth: Negative
PV
0
PV
0
Deadband: Dead
Bandwidth: Positive
Output
Heating Cooling
Set Point
Output
Heating Cooling
Set Point
Figure 5: PID control
Figure 6: PID Control
y Programmable PID Control & Parameters Setting
The programmable PID control includes 8 patterns (Pattern 0 ~ 7). Each pattern contains 8 steps (Step 0 ~ 7) and
parameters: “link pattern”, “cycle” and “the number of steps”.
Start Pattern: The user can set up which pattern is the start pattern for the programmable control.
Steps: Includes the settings of the two parameters, set point X and execution time T, indicating that the set point (SV)
has to rise to temperature X after the period of execution time T. If the result of the set point X is the same as that of
the previous setting, the process is called “Soak”; otherwise, it is called “Ramp”. Therefore, the programmable control
is also known as Ramp/Soak control. The default setting of the first step is Soak control. The temperature will first rise
to the set point X and remain at X. The total execution time is T.
Link Pattern: The pattern to be executed following the current pattern. If the setting is not 0 ~ 7, the set point will
remain at the last pattern.
Cycle: The additional number of cycles for a pattern. For example, if the parameter is set to 2, it refers to the pattern
has to execute additional twice, totaling the execution to 3 times including the original one.
The Number of Steps: The number of steps in each pattern (range: 0 ~ 7). For example, if the parameter is set to 2,
it refers to the pattern will execute Step 0 ~ Step 2, and other steps will not be executed.
The Execution: Available settings include “run”, “program hold”, “program stop” or “stop”.
1. When this parameter is set to “run”, the program will start its execution from step 0 of the start pattern.
2. When this parameter is set to “program hold”, the program will stop and the temperature will stop at the SV before
the program stops. If the user sets to “run” again, the program will resume the step before the program stops and
execute by the remaining time.
3. When this parameter is set to “program stop”, the program will stop and the temperature will stop at the SV before
the program stops. If the user sets to “run” again, the program will execute again from Step 0 of the start pattern.
4. When this parameter is set to “stop”, the program will stop, and the control output will be disabled.
Proportional Output:
If Output 1 of this DTC1000/2000 series is linear voltage or current, the user can set it to “Proportional Output”.
Proportional output refers to the output varies with the input. For example, if the input range is set to 0 ~ 1,000, and
when the input value is 0, the output will be 0mA or 0V. When the input value is 1,000, the output will be 20mA or 10V.
Figure 7: Proportional Output
Output
PV Low
PV High
Output
10V or 20mA
0V or 4mA
PV Low PV High
Negative
output slope
PV
PV
Positive output slope
10V or 20mA
0V or 4mA
y Alarm Output
DTC1000/2000 series offers 12 alarm modes. When the PV exceeds or falls below SV, the alarm output will be enabled.
See the table below for the 12 modes.
Mode
Alarm Type Alarm Output Operation
0 No alarm OFF
1
Alarm output will be enabled when the temperature reaches upper and lower
limits.
y Alarm will be enabled when the PV exceeds SV + AL-H or falls below SV –
AL-L.
ON
OFF
AL-L SV AL-H
Mode
Alarm Type Alarm Output Operation
2 Alarm output will be enabled when the temperature reaches the upper limit.
y Alarm will be enabled when the PV exceeds SV + AL-H.
ON
OFF
SV AL-H
3 Alarm output will be enabled when the temperature reaches the lower limit.
y Alarm will be enabled when the PV falls below SV – AL-L.
ON
OFF
AL-L
SV
4 y Alarm will be enabled when the PV is between SV + AL-L and SV – AL-L.
ON
OFF
AL-L SV AL-H
5
Alarm output will be enabled when the temperature reaches the absolute
value of the upper and lower limits.
y Alarm will be enabled when the PV exceeds AL-H or falls below AL-L.
ON
OFF
AL-L
AL-H
6
Alarm output will be enabled when the temperature reaches the absolute
value of the upper limit.
y Alarm will be enabled when the PV exceeds AL-H.
ON
OFF
AL-H
7
Alarm output will be enabled when the temperature reaches the absolute
value of the lower limit.
y Alarm will be enabled when the PV falls below AL-L.
ON
OFF
AL-L
8
Standby upper/lower limit alarm
y Alarm will be enabled when the PV reaches SV and exceeds SV + AL-H or
falls below SV – AL-L.
ON
OFF
AL-L
AL-H
SV
9 Upper limit standby alarm
y Alarm will be enabled when the PV reaches SV and exceeds SV + AL-H.
ON
OFF
SV AL-H
10 Lower limit standby alarm
y Alarm will be enabled when the PV reaches SV and falls below SV – AL-L
ON
OFF
AL-L SV
11
Upper limit hysteresis alarm
y Alarm will be enabled when the PV exceeds SV + AL-H and disabled when
the PV falls below SV + AL-L.
ON
OFF
AL-H
AL-L
12
Lower limit hysteresis alarm
y Alarm will be enabled when the PV falls below SV – AL-H and disabled
when the PV exceeds SV – AL-L.
ON
OFF
AL-H
AL-L
Note: AL-H and AL-L include AL1H, AL2H, AL1L and AL2L. When Output 1 is set to Alarm Output, use AL1H (1024H) and AL1L
(1025H). When Output 2 is set to Alarm Output, use AL2H (1026H) and AL2L (1027H).
LED Display
1. When power is normal, POWER LED will be on.
2. After DTC1000/2000 is switched on, all LED will be on. The communication protocol will be displayed in 1 second,
followed by the communication address in the next second.
3. RUN LED is on when the control is executing.
4. ERROR LED is on when errors occur in input, memory or communication.
5. When an output is executing, its corresponding output LED will be on.
6. AT LED flashes when PID parameters are being auto-tuned.
7. RX LED flashes when DTC1000/2000 receives communication signals. TX LED flashes when DTC1000/2000
sends out communication signals.
Communication protocol displayed on LED after the power of DTC1000/2000 is switched on:
AT TX RX O1 O2 Err Run
000: 2,400bps 001: 4,800bps 010: 9,600bps
011: 19,200bps 100: 38,400bps
Parity 00: None 01: Even
10: Odd
0: ASCII
1: RTU
0:2 Stop bits
1:1 Stop bit
Communication address display: AT (bit 6) and Run (bit 0) are combined to binary code.
Password Function
The default setting of the password is disabled. To enable the password function, enter the 4-character password in the
specific communication address. The password is protected by 3 levels.
1. Level 1: Only LED status, SV and PV can be read. No settings can be modified.
2. Level 2: Only LED status, SV and PV can be read. Only SV can be modified.
3. Level 3: All SV can be read. Only SV and auto-tuning can be modified.
4. Level 4: No password protection.
When a password is set (in 106EH ~ 1070H), the protection will enter Level 1. To enter other levels, enter the
corresponding password (in 106BH ~ 106DH). After DTC1000/2000 is switched off, the protection will return to Level 1.
To unlock the password protection, the user has to remove all the passwords (in 106EH ~ 1070H).
The password protection level can be read in 106EH ~ 1070H:
bit b0 b1 b2 b3 b4 b5 b6
Status Level 1
Level 2
Level 3
Level 1 locked Level 2 locked Level 3 locked Unlocked
bit = 0 refers to no password is set. bit = 1 refers to the password has been set (b0 ~ b2). b3 ~ b6 display the current level status.
Synchronous Communication Protocol & Auto ID Setup
This function allows the user to set the communication protocol of DTC2000 to the same protocol as set in the first
DTC1000. The station IDs of DTC1000/2000 are arranged in decreasing order. Follow the steps below.
1. Set the auto communication ID of DTC1000 to “1” (communication address: 1022H).
2. Switch off DTC1000 before connecting it to DTC2000. Switch it on again.
3. Default communication protocol: 9,600bps, 7 bits, Even, 1 stop bit, communication address 01.
4. This function will consume 3 ~ 5 seconds more when you switch on your DTC.
RS-485 Communication
1. Supports transmission speed: 2,400, 4,800, 9,600, 19,200, 38,400bps;
2. Does not support 7, N, 1 / 8, E, 2 / 8, O, 2 communication format;
3. Communication protocol: Modbus ASCII/RTU;
4. Function code: 03H (read Max. 8 words in register), 06H (write 1 word into register), 01H (read Max. 16 bits of
data), 05H (write 1 bit into register).
Address Setting Content Explanation
1000H Present temperature value (PV)
Unit: 0.1 degree. Analog input: 1EU.
The read values below indicate the occurrence of errors:
8002H: Temperature not acquired yet
8003H: Temperature sensor not connected
8004H: Incorrect sensor type
8006H: Unable to acquire temperature, ADC input error
8007H: Unable to read/write the memory
1001H 0 Set point (SV) Unit: 0.1 degree. Analog input: 1EU.
1002H 6,000 Upper-limit of temperature range The content shall not be bigger than the range. Unit: 0.1°
1003H -200 Lower-limit of temperature range The content shall not be smaller than the range. Unit: 0.1°
1004H 12 Input sensor type See the table in “Input” section.
1005H 0 Control method 0: PID, 1: ON/OFF, 2: Manual, 3: programmable PID
1007H 4 Control cycle of Output 1 0 ~ 99, 0: 0.5sec
1008H 4 Control cycle of Output 2 0 ~ 99, 0: 0.5sec (Invalid when the 2 outputs are the same
control.)
1009H 476 Proportional band value 1 ~ 9,999, Unit: 0.1°. Analog input: 1EU
100AH 260 Ti value 0 ~ 9,999
100BH 41 Td value 0 ~ 9,999
100CH 0 Default integration value 0 ~ 1,000, Unit: 0.1%
100DH 0
Offset compensation value for proportional
control (when Ti=0)) 0 ~ 1,000, Unit: 0.1%
100EH 100 COEF setting when in dual control output 1 ~ 9,999, Unit: 0.01
100FH 0
Deadband setting when in dual control
output -999 ~ 9,999, Unit: 0.1° or 1EU
1010H 0 Hysteresis of Output 1 0 ~ 9,999, Unit: 0.1° or 1EU
1011H 0 Hysteresis of Output 2 0 ~ 9,999, Unit: 0.1° or 1EU
1012H 0 Read/write output percentage of Output 1 Unit: 0.1%. “Write” is only applicable in manual mode.
1013H 0 Read/write output percentage of Output 2 Unit: 0.1%. “Write” is only applicable in manual mode.
1014H 0 Upper-limit regulation for analog linear output
1 scale = 2.8μA = 1.3mV
1015H 0 Lower-limit regulation for analog linear output
1 scale = 2.8μA = 1.3mV
1016H 0 Temperature offset regulation value -999 ~ +999, Unit: 0.1° or 1EU
1020H 0 Output mode for Alarm 1 See “Alarm Output” section.
1021H 0 Output mode for Alarm 2 See “Alarm Output” section.
1022H 0 Communication flag auto-set 0: Communication banned, 1: Communication auto-set
1024H 40 Upper limit for Alarm 1 See “Alarm Output” section.
1025H 40 Lower limit for Alarm 1 See “Alarm Output” section.
1026H 40 Upper limit for Alarm 2 See “Alarm Output” section.
1027H 40 Lower limit for Alarm 2 See “Alarm Output” section.
102AH Read/write status b1: ALM2, b2: °C, b3: °F, b4: ALM1, b5: O2, b6:O1, b7: AT
102CH 0 Positive/negative proportional output 0: positive, 1: negative
102EH LED status b0: RUN, b1: ERR, b2: O2, b3: O1, b4: RX, b5:TX b6: AT
102FH Software version V1.00 is indicated as 0x100
1030H 0 No. of start pattern 0 ~ 7
1032H Remaining time of the executed step Unit: second
1033H Remaining time of the executed step Unit: minute
1034H No. of currently executed step 0 ~ 7
1035H No. of currently executed pattern 0 ~ 7
1037H 1,000 Upper limit of proportional output 0 ~ 100% upper limit of analog output, Unit: 0.1%
1038H 0 Lower limit of proportional output 0 ~ 100% lower limit of analog output, Unit: 0.1%
1040H~
1043H 7 Number of steps in a pattern 0 ~ 7 = N refers to the pattern will be executed from Step 0
to Step N.
1050H~
1053H 0 Additional number of cycles for a pattern 0 ~ 199 refers to the pattern will be executed for 1 ~ 200
times.
1060H~
1063H 0 No. of the link pattern for the current
pattern
0 ~ 8, 8 refers to end of the program. 0 ~ 7 refers to the
next pattern No. following the current pattern.
1068H 1 Run/Stop setting 0: Stop, 1: Run, 2: Program end, 3: Program hold
1069H 0 Control selection of Output 1 0: Heating, 1: Cooling, 2: Alarm, 3: Proportional output
106AH 0 Control selection of Output 2 0: Heating, 1: Cooling, 2: Alarm
106BH 0
Unlock Level 1 password protection.
Read/write allowed Shall be the same as Level 1 password (106E)
106CH 0
Unlock Level 2 password protection. Use
Level 3. Shall be the same as Level 2 password (106F)
106DH 0
Unlock Level 3 password protection. Use
Level 2 Shall be the same as Level 3 password (1070)
106EH 0
Unlock Level 1 password protection/Set up
password Unlock password before setting it up.
106FH 0
Unlock Level 2 password protection/Set up
password Unlock password before setting it up.
1070H 0
Unlock Level 3 password protection/Set up
password Unlock password before setting it up.
1071H 1 Read/write communication address 1 ~ 247
1072H 0 Read/write communication format 1: RTU, 0: ASCII
1073H 2 Read/write communication speed 0 ~ 4: 2,400 ~ 38,400
1074H 1 Read/write communication data length 0: 8 bits, 1: 7 bits
1075H 1 Read/write parity bit 0: None, 1: Even, 2: Odd
1076H 1 Read/write stop bit 0: 2 stop bits, 1: 1 stop bit
2000H~
203FH 0 SV temperature for Pattern 0 ~ 7.
SV for Pattern 0 is set in 2000H ~ 2007H Unit: 0.1°
2080H~
20BFH 0 Execution time for Pattern 0~7.
Time for Pattern 0 is set in 2080H ~ 2087H 0 ~ 900 (1 scale = 1 minute)
5. Address and content of the bit register (read bits are stored starting from LSB, and written data is FF00H, set the
bit as 1. 0000H sets the bits data to “0”).
0811H Temperature unit display 0:°F, 1: °C (Default)
0813H Read/write auto-tuning status 0: End (Default), 1: Start
0814H Run/Stop setting 0: Stop, 1: Run (Default)
0815H Program hold flag 1: Program hold
0816H Program stop flag 1: Program stop
6. Communication format: Command 01: read bit, 05: write bit, 03: read word, 06: write word.
y ASCII Mode
Read Command Read Response Message Write Command Write Response Message
Start word :
’:’
Start word ’:’
’:’
Start word ’:’
’:’
Start word ’:’
’:’
Machine address 1 ‘0’
‘0’
Machine address 1 ‘0’
‘0’
Machine address 1 ‘0’
‘0’
Machine address 1 ‘0’
‘0’
Machine address 0 ‘1’
‘1’
Machine address 0 ‘1’
‘1’
Machine address 0 ‘1’
‘1’
Machine address 0 ‘1’
‘1’
Command 1 ‘0’
‘0’
Command 1 ‘0’
‘0’
Command 1 ‘0’
‘0’
Command 1 ‘0’
‘0’
Command 0 ‘3’
‘1’
Command 0 ‘3’
‘1’
Command 0 ‘6’
‘5’
Command 0 ‘6’
‘5’
‘1’
‘0’
‘0’
‘0’
‘1’
‘0’
‘1’
‘0’
‘0’
‘8’
Length of response data
(byte) ‘4’
‘2’
‘0’
‘8’
‘0’
‘8’
‘0’
‘1’
‘0’
‘1’
‘0’
‘1’
‘0’
‘1’
Read staring address of
data/bit
‘0’
‘0’
‘1’
‘7’
Write data address
‘1’
‘0’
Write data address
‘1’
‘0’
‘0’
‘0’
‘F’
‘0’
‘0’
‘F’
‘0’
‘F’
‘0’
‘0’
Data content in
1000H/081xH
‘4’
‘1’
‘3’
‘F’
‘3’
‘F’
‘0’
‘0’
‘0’
‘E’
‘0’
‘E’
‘0’
Read length of data/bit
(word/bit)
‘2’
‘9’
‘0’
To write data content
‘8’
‘0’
Write data content
‘8’
‘0’
LRC1 check ‘E’
‘D’
‘0’
LRC1 ‘F’
‘E’
LRC1 ‘F’
‘E’
LRC0 check ‘A
‘D’
Data content in 1001H
‘0’
LRC0 ‘D’
‘3’
LRC0 ‘D’
‘3’
End word 1 CR
CR
LRC1 check ‘0’
‘E’
End word 1 CR
CR
End word 1 CR
CR
End word 0 LF
LF
LRC0 check ‘3’
‘4’
End word 0 LF
LF
End word 0 LF
LF
End word 1 CR
CR
End word 0 LF
LF
y LRC Check
LRC check sums up from “machine address” to “data content”, e.g. 01H + 03H + 10H+ 00H + 00H + 02H = 16H. Obtain 2’s
complement EA.
y RTU Mode
Read Command Read Response Message Write Command Write Response Message
Machine address
01H
01H
Machine address 01H
01H
Machine address
01H
01H
Machine address 01H
01H
Command 03H
01H
Command 03H
01H
Command 06H
05H
Command 06H
05H
10H
08H
10H
08H
10H
08H
Read start address
of data 00H
10H
Length of response
data (byte) 04H
02H
Write data address
01H
10H
Write data address
01H
10H
00H
00H
01H
17H
03H
FFH
03H
FFH
Read length of data
(bit/word) 02H
09H
Data content 1
F4H
01H
Write data content
20H
00H
Write data content
20H
00H
CRC low byte C0H
BBH
03H
CRC low byte DDH
8FH
CRC low byte DDH
8FH
CRC high byte CBH
A9H
Data content 2
20H
CRC high byte E2H
9FH
CRC high byte E2H
9FH
CRC low byte BBH
77H
CRC high byte 15H
88H
y CRC Program Example
unsigned int reg_crc = 0xffff; i = 0;
while (length--)
{
reg_crc ^= RTUData[i];
i ++;
for (j = 0; j < 8; j++)
{
if (reg_crc & 0x01) reg_crc = (reg_crc >> 1) ^ 0xA001;
else reg_crc = reg_crc >> 1;
}
}
return(reg_crc);
Installation
How to connect maximum 8 DTC1000/2000 controllers by using DIN rail.
How to Set Up Current Input
For general input For current input (4 ~ 20mA, 0 ~ 20mA)
JUMPER
PIN HEADER
JP1
DEFAULT SETTING
JUMPER
PIN HEADER
JP1
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