Delta Electronics Analog Output Module Dvp04Da S Users Manual 5011321502 04DA

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DVP04DA-S

DVP04DA-S Analog Output Module

Instruction Sheet

1 WARNING

Please carefully read this instruction thoroughly prior to use the DVP04DA-S.

The DC input power must be OFF before any maintenance.

This is an OPEN-TYPE built-in DVP04DA-S, and the DVP04DA-S is certified to meet IEC

61131-2 (UL 508) safety requirements when installed in the enclosure to prevent high

temperature, high humidity, exceessive vibration, corrosive gases, liquids, airbome dust or

metallic particles. Also, it is equipped with protective methods such as some special tool or key to

open the enclosure, in order to prevent the hazard to users or any damage to the DVP04DA-S.

Do not connect the AC power to any of the input/output terminals, or it may damage the

DVP04DA-S. Make sure that all the wiring is well conducted prior to power on.

Do not touch the internal circuit for at least 1 minute after the power is OFF.

Make sure that the DVP04DA-S is properly grounded to prevent any electromagnetic noise.

2 INTRODUCTION

2.1 Model Explanation and Peripherals

 Thank you for choosing DELTA DVP PLC Series. The analog output module of DVP04DA-S series

can read/write the data of analog output module by using commands FROM / TO via DVP-PLC

SS/SA/SX MPU program. The analog output module receives 12-bit digital data of 4 groups from

PLC MPU and converts it into 4 points analog output signal either in voltage or in current.

 The Software version of DVP04DA-S analog output module can be updated via RS-485

communication. Power unit and module are separate. Size is small and easy to install.

 Users can select output from voltage or current via wiring. Voltage output range is 0V ~ +10V DC

(resolution is 2.5 mV). Current output range is 0mA ~ 20mA (resolution is 5 µA).

 Nameplate Explanation

Model Name

Input power supply spec.

Analog input/output module spec.

Barcode

04DA-S0T3250003VX.XX

20.4VDC ~ 28.8VDC

MADE IN XXXXX X

2.5mV or 5 A

0V ~ + 10V or 0mA ~ +20mA

 Model Explanation

Serial Number

Model

S: for SS series MPU

P: for EP series MPU

H: f or EH series MPU

XA: Analog input/output mixed module

Product Series

Input + Output points

Model type

AD: Analog input module

DA: Analog output module

PT: Platinum temperature sensors (PT-100)

TC: Thermocouple sensors (Type J/K)

Production series

Production week

Production year (2004)

Production place (Taoyuan)

Serial number of version

Production Model

RT: Resistor Thermocouple

HC: Input module of high-speed counter

PU: single axis positioning unit

2.2 Product Profile and Outline

90.00

4.00

3.00 25.20

1

2

3

4

60.00

5

6

7

8

9

3

10

●

FG

V+

I+

COM

C

H

1

FG

V+

I+

COM

C

H

2

FG

V+

I+

COM

C

H

3

FG

V+

I+

COM

C

H

4

11

12

13

3.4

90.00

60.00

3.00

14

●

Unit: mm

1. Status indicator (Power, RUN and ERROR) 8. Expansion port

2. Model name 9. Expansion unit clip

3. DIN rail clip 10. DIN rail (35mm)

4. I/O terminals 11. RS-485 Communication port

5. I/O point indicator 12. Mounting rail of the expansion unit

6. Mounting hole of the expansion unit 13. DC Power input

7. Nameplate 14. Expansion port

2.3 External wiring

V+

I+

COM

V+

I+

COM

24+

24-

DC/DC +15V

-15V

AG

FG

FG

CH1

CH1

0V~+10V

*2

*3 DC24V

CH4 CH4

AC drive, recorder,

scale valve...

AC drive, recorder,

scale valve...

voltage output

shielding cable *1

shielding cable *1

current output

converter

terminal of

power module

system grounding

class 3 grounding

(100 or less)

.

.

.

.

.

Note 1: Please isolate analog output and other power

wiring.

Note 2: If noise interference from loaded input

terminal wiring is significant, please connect

capacitor with 0.1~0.47µF 25V for noise

filtering.

Note 3: Please connect power module terminal

and analog output module terminal to

system earth point and make system earth

point be grounded or connects to machine

cover.

Warning: DO NOT wire to the No function terminal ●.

2.4 Terminal of analog module layout

DVP04AD-S DVP02DA-S DVP04DA-S DVP04PT-S DVP04TC-S DVP06XA-S DVP08RT-S

V

+

I+

COM

FG

V

+

I+

COM

FG

I+

COM

FG

V

+

I+

COM

FG

V

+

V

+

I+

COM

FG

V

+

I+

COM

FG

V

+

I+

COM

FG

V

+

I+

COM

FG

I+

COM

FG

V

+

I+

COM

FG

V

+

L+

L-

FG

FG

I-

L+

L-

I-

L+

L-

FG

FG

I-

L+

L-

I-

L+

L-

SLG

L+

L-

SLG

L+

L-

SLG

L+

L-

SLG

V

+

I+

COM

V

+

I+

COM

I+

COM

V

+

I+

COM

V

+

V

+

I+

COM

V

+

I+

COM

L+

L-

L-

L-

L+

L+

L-

L+

L+

L-

L-

L-

L+

L+

L-

L+

3 STANDARD SPECIFICATIONS

3.1 Specifications

Digital/Analog (2D/A) Module Voltage Output Current Output

Power Supply Voltage 24 VDC (20.4VDC~28.8VDC) ( –15%~+20%)

Analog Input Channel 2 channels / each module

Analog Output Range 0~10V 0~20mA

Digital Data Range 0~4000 0~4000

Resolution 12 bits (1LSB=2.5 mV) 12 bits (1LSB=5 µA)

Output Impedance 0.5Ω or lower

Overall Accuracy ±0.5% of full scale of 25℃(77℉).

±1% of full scale during 0~55℃ (32~131℉).

Response Time 3 ms × channels

Max. Output Current 20mA (1KΩ~2MΩ) －

Tolerance Carried Impedance － 0~500Ω

Digital Data Format 2’s complementary of 16-bit, 13 Significant Bits

Isolation Method Isolation between digital area and analog area. But no isolation among

channels.

Protection Voltage output has short circuit protection but a long period short circuit

may cause internal wire damage and current output break.

Communication Mode

(RS-485)

Yes, communication formats are (4800 / 9600 / 19200 / 38400 / 57600 /

115200bps) Communication format: ASCII mode is 7Bit, even bit, 1

stop bit (7 E 1). Communication format of RTU mode is 8Bit, even bit, 1

stop bit (8 E 1). When connecting to PLC MPU in series, RS-485 can’t

be used.

Connect to DVP-PLC MPU in

Series

If DVP04DA-S modules are connected to MPU, the modules are

numbered from 0 – 7. 0 is the closest and 7 is the furthest to the MPU.

8 modules is the max and they do not occupy any digital I/O points of

the MPU.

3.2 Other Specification

Max. Rated Consuming Power 24 VDC (20.4VDC~28.8VDC) (-15%~+20%), 4W, supply from

external power

Environment Condition and Wiring Follow the DVP-PLC MPU

Spec of Prevent Static Electricity All places between terminals and ground comply with the spec

4 CR (Control Register)

DVP04DA-S Analog Output Module Explanation

CR

No

RS-485

Parameters

Address

Latched Register Name b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0

#0 H 4032 ○ R Model type System used, data length is 8 bits (b7~b0). DVP-04DA model code=H 89

Reserved CH4 CH3 CH2 CH1 #1 H 4033 ○ R/W Output mode setting

Output mode setting: factory setting is H0000.

Mode 0: output voltage mode (0V~10V).

Mode 1: output voltage mode (2V~10V).

Mode 2: output current mode (4mA~20mA).

Mode 3: output current mode (0mA~20mA).

Mode 4: none use.

#2 ~ #5 Reserved

#6 H 4038 ○ R/W CH1 output value

#7 H 4039 ○ R/W CH2 output value

#8 H 403A ○ R/W CH3 output value

#9 H 403B ○ R/W CH4 output value

The output setting range of channel CH1~CH4 is K0~K4000. Factory

setting is K0 and unit is LSB.

#10 ~ #17 Reserved

#18 H 4044 ○ R/W To adjust OFFSET value of CH1

#19 H 4045 ○ R/W To adjust OFFSET value of CH2

#20 H 4046 ○ R/W To adjust OFFSET value of CH3

#21 H 4047 ○ R/W To adjust OFFSET value of CH4

It is used to set the OFFSET value of CH1~CH4. The setting range is

K-2000~K2000. The factory setting is K0 and unit is LSB.

#22 ~ #23 Reserved

#24 H 404A ○ R/W To adjust GAIN value of CH1

#25 H 404B ○ R/W To adjust GAIN value of CH2

#26 H 404C ○ R/W To adjust GAIN value of CH3

#27 H 404D ○ R/W To adjust GAIN value of CH4

It is used to set the GAIN value of CH~CH4. The setting range is

K-1600~K8000. The factory setting is K2000 and unit is LSB.

#28 ~ #29 Reserved

#30 H 4050 ╳ R Error status Data register to save all error status. Please refer to fault code chart for

detail.

#31 H 4051 ○ R/W Communication address setting Used to set RS-485 communication address. The setting range is from 01

to 255 and the factory setting is K1.

#32 H 4052 ○ R/W Communication Baud Rate

setting

Used to set communication baud rate (4800, 9600, 19200, 38400, 57600,

115200bps). Communication format: ASCII mode is 7Bit, even bit, 1 stop bit

(7 E 1). Communication format of RTU mode is 8Bit, even bit, 1 stop bit (8

E 1).

b0: 4800 bps (bit/sec). b1: 9600 bps (bit/sec). (Factory setting)

b2: 19200 bps (bit/sec). b3: 38400 bps (bit/sec).

b4: 57600 bps (bit/sec). b5: 115200 bps (bit/sec).

b6-b13: reserved.

b14: exchange low and high byte of CRC check code (RTU mode only)

b15: ASCII / RTU mode selection

b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0

Reserved CH4 CH3 CH2 CH1

#33 H 4053 ○ R/W Reset to factory setting and set

characteristics adjustable

priority Output latched setting, factory setting H0000.

Give CH1 setting for example:

1. When b0=0, user can set OFFSET and GAIN value of CH1 (CR#18,

CR#24). When b0=1, inhibit user to adjust OFFSET and GAIN value of

CH1 (CR#18, CR#24).

2. b1 is used to check if characteristic register is latched. b1=0 latched

(factory setting), b1=1 not latched.

3. When b2 is set to 1, all settings are reset to factory setting.

#34 H 4054 ○ R Software version. Show software version in hexadecimal. For example: H 010A means 1.0A.

#35~#48 System used

○ means latched. ╳ means not latched. R means can read data by using FROM command or RS-485.

W means can write data by using TO command or RS-485.

LSB (Least Significant Bit): 1. Voltage output: 1LSB=10V/8000=2.5mV. 2. Current output: 1LSB=20mA/4000=5µA.

Explanation:

1. The content of CR#0 is model type, user can read the data from program to check if there is

expansion module.

2. CR#1 is used to set two internal channels working mode of analog output module. Every channel

has four modes that can be set individually. For example: if setting CH1 to mode 2 (b2~b0=010),

CH2 to mode 1(b5~b3=001). It needs to set CR#1 to H000A. The factory setting of CR#1 is H0000.

3. CR#2 ~ CR#5, CR#10 ~ CR#17, CR#22, CR#23, CR#28, CR#29 Reserved.

4. CR #6 ~ CR#9 display CH1 ~ CH4 output signals. The setting range is K0~K4000. Factory setting is

K0 and unit is LSB.

5. CR#18 ~ CR#21 are used to adjust the OFFSET value of CH1 and CH4. The factory setting is K0

and unit is LSB. If output value equal to 0 after calculation, the adjustable range of analog output

voltage or current is -2000~+2000.

Voltage adjustable range: -5V~+5V(-2000LSB~+2000LSB).

Current adjustable range: -10mA~+10mA (-2000LSB~+2000LSB).

6. CR#24 ~ CR#27 are used to adjust the GAIN value of CH1 and CH4. The factory setting is K2000

and unit is LSB. If output value equal to 2000 after calculation, the adjustable range of analog

output voltage or current is -1600~+8000.

Voltage adjustable range: -4V~+20V(-1600LSB~+8000LSB).

Current adjustable range: -8mA ~+40mA (-1600LSB~+8000LSB).

Please be noticed that GAIN VALUE – OFFSET VALUE = +400LSB ~+6000LSB (voltage or

current). If the value difference comes up small (within range), the output signal resolution is then

slim and the variation is definitely larger. On the contrast, if the value difference exceeds the range,

the output signal resolution becomes larger and the variation is definitely smaller.

7. CR#30 is fault code. Please refer to the following chart.

Fault Description Content b15~b8 b7 b6 b5 b4 b3 b2 b1 b0

Power Source Abnormal K1(H1) 0 0 0 0 0 0 0 1

Analog Input Value Error K2(H2) 0 0 0 0 0 0 1 0

Setting Mode Error K4(H4) 0 0 0 0 0 1 0 0

Offset/Gain Error K8(H8) 0 0 0 0 1 0 0 0

Hardware Malfunction K16(H10) 0 0 0 1 0 0 0 0

Digital Range Error K32(H20) 0 0 1 0 0 0 0 0

Average Times Setting Error K64(H40) 0 1 0 0 0 0 0 0

Command Error K128(H80)

Reserved

10000000

Note: Each fault code will have corresponding bit (b0~b7). Two or more faults may happen at the

same time. 0 means normal and 1 means having fault.

8. CR#31 is used to set RS-485 communication address. The setting range is from 01 to 255. The

factory setting is K1.

9. CR#32 is used to set RS-485 communication baud rate: 4800, 9600, 19200, 38400, 57600, 115200

bps. b0: 4800bps, b1: 9600bps, (factory setting) b2: 19200bps, b3: 38400 bps, b4: 57600 bps, b5:

115200 bps, b6-b13: reserved, b14: exchange low and high byte of CRC check code. (RTU mode

only) b15=0: ASCII mode, b15=1: RTU mode. Communication format: ASCII mode is 7Bit, even bit,

1 stop bit (7 E 1), while RTU mode is 8Bit, even bit, 1 stop bit (8 E 1).

10. CR#33 is used to set the internal function priority. For example: characteristic register. Output

latched function will save output setting to the internal memory before power loss.

11. CR#34 is software version of model type.

12. CR#35~ CR#48 are used for system.

13. The corresponding parameters address H4032~H4063 of CR#0~CR#48 are provided for user to

read/write data via RS-485.

A. Communication baud rate: 4800, 9600, 19200, 38400, 57600, 115200 bps.

B. Communication format: ASCII mode is 7Bit, even bit, 1 stop bit (7 E 1). Communication

format of RTU mode is 8Bit, even bit, 1 stop bit (8 E 1).

C. Function code: 03H—read data from register. 06H—write one WORD to register. 10H—write

multiple WORD to register.

5 ADJUST D/A CONVERSION CHARACTERISTIC CURVE

5.1 Adjust D/A Conversion Characteristic Curve

Voltage output mode:

Mode 0 of CR#1: GAIN = 5V(2000LSB),

OFFSET=0V (0LSB)

Mode 1 of CR#1: GAIN = 6V(2400LSB),

OFFSET=2V (800LSB).

GAIN: The setting range of voltage output value when

digital input value is K2000 should be

-4V~+20V(-1600LSB ~+8000 LSB).

OFFSET: The setting range of voltage output value when

digital input value is K0 should be

-5V~+5V(-2000LSB ~ +2000 LSB).

0+2000 +4000

2V

5V

6V

10V

OFFSET

GAIN

voltage

output

Digital input

mode 0

mode 1

GAIN－OFFSET: Setting range: +1V~+15V (+400LSB ~ +6000 LSB).

Current output mode

Mode 2 of CR#1: GAIN = 12mA (2400LSB),

OFFSET=4mA (800LSB).

Mode 3 of CR#1: GAIN = 10mA (2000LSB),

OFFSET=0mA (0LSB).

GAIN: The setting range of current output when digital

input value is K2000 should be -8mA~+40mA

(-1600LSB ~+8000LSB).

OFFSET: The setting range of current output when digital

input value is K0 should be -10mA ~+10mA

(-2000LSB ~+2000LSB).

0+2000 +4000

20mA

OFFSET

GAIN

12mA

10mA

4mA

current

output

digital input

mode 3

mode 2

GAIN－OFFSET: Setting range: +2mA~+30mA (+400LSB

~+6000LSB).

The charts above are D/A conversion characteristic curve of voltage input mode and current input

mode. Users can adjust conversion characteristic curve by changing OFFSET values (CR#18~CR#21)

and GAIN values (CR#24~CR#27) depend on application.

LSB (Least Significant Bit): 1.voltage output: 1LSB=10V/4000=2.5mV. 2.current output:

1LSB=20mA/4000=5µA.

5.2 Program Example for Adjusting D/A Conversion Characteristics Curve

Example 1: Setting OFFSET value of CH1 to 0V(=K0LSB) and GAIN value is 2.5V(=K1000LSB).

X0

K1000

K24

H10 K1

K1

H0 K1

M1002

K33

K1

K1

K18 K0

TO

TO

TO

TO

K1

K1

K1

K1

 Writing H10 to CR#1 of analog output

module#0. Setting CH1 to mode 0

(voltage output 0V~ +10V) and CH2 to

mode 2 (current output 4mA~ +20mA).

 Writing H0 to CR#33 and allow CH1 ~

CH4 to adjust characteristic.

 When X0 switches from Off to On,

K0LSB of OFFSET value will be written

to CR#18 and K1000LSB of GAIN value

will be written to CR#24.

Example 2: Setting OFFSET value of CH2 to 2mA (=K400 LSB) and GAIN value to 18mA (=K3600LSB).

X0

K1

K1

H0 K1

M1002

K33

K1

K1

H18

K19

K25

K400

K3600

TO

TO

TO

TO

K1

K1

K1

K1

 Writing H10 to CR#1 of analog output

module#0. Setting CH1 to mode 0

(voltage output 0V~ +10V) and CH2 to

mode 3 (current output 0mA~ +20mA).

 Writing H0 to CR#33 and allow CH1 ~

CH4 to adjust characteristic.

 When X0 switches from Off to On,

K400LSB of OFFSET value will be

written to CR#19 and K3600LSB of

GAIN value will be written to CR#25.

6 INITIAL PLC START-UP

 Lamp display

1. When power is on, POWER LED will be lit and ERROR LED will be lit for 0.5 second.

2. It is normal that POWER LED should be lit and ERROR LED should turn off. When power supply

is lower than 19.5V, ERROR LED will blink continuously till the power voltage is higher than 19.5V.

3. When it connects to PLC MPU in series, RUN LED on MPU will be lit and A/D LED or D/A LED

should blink.

4. After receiving the first RS-485 command during controlling via RS-485, A/D LED or D/A LED

should blink.

5. After converting, ERROR LED should blink if input or output exceeds the upper bound or below

the lower bound.

 Program example:

M0

K1

M1000

FROM

END

D0

TO

K0K1

D0CMP H89

INC D100

ADD D101 K5

LD= K4000 RST

H10

K2K6

M1

M1013

D101

D100 D100

LD= K4000 RST D101D101

K1 K1 K1

TO

M1

K1 D100

Explanation:

 Read the data of model type from expansion module K1 and distinguish if the data is H89

(DVP04DA-S model type).

 D100 will increase K1 and D101 will increase K5 every second.

 When value of D100 and D101 attain to K4000, they will be reset to 0.

 If the model type is DVP04DA-S, M1 will be on and set the output mode: CH1 mode to 0, CH2 mode

to 2.

 Writing output setting CR#6 and CR#7 to D100 and D101. Analog output will vary with D100 and D101

value.

7 COMMAND EXPLANATION

API Adaptive model

ES EP EH

78 D FROM P Read special module

CR data   

Bit device Word device

X Y M S K H KnX KnY KnM KnS T C D E F

m1 ¼ ¼

m2 ¼ ¼

D ¼ ¼ ¼ ¼ ¼ ¼ ¼ ¼

n ¼ ¼

 Note: The usage range of operand m1 is 0~7.

The usage range of operand m2: ES/EP:

0-48, EH: 0-254.

The usage range of operand n: ES/EP: n=

1~(49-m2), EH: 1~(255-m2).

ES series model doesn’t support pulse

execution command (FROMP, DFROMP).

16-bit command (9 STEPS)

FROM Continuous

execution FROMP Pulse

execution

32-bit command (17 STEPS)

DFROM Continuous

execution DFROMP Pulse

execution

 Flag: When M1083 on, it allows enable

the interrupt during FROM/TO.

Refer to following for detail.

Command

Explanation

 : the number for special module. : the number of CR (Control Register) of

special module that will be read. : the location to save reading data. : the

data number of reading ONCE.

 DVP-series PLC uses this command to read CR data of special module.

 : When assign the bit operand, K1~K4 are used for 16-bit and K5~K8 are used for

32-bit.

 Please refer the footnote below for calculation the special module number.

Program

Example

 Read the content of CR#24 of special module#0 save it to D0 of PLC, and read the

content of CR#25 of special module#0 save it to D1 of PLC. 2 data are read in one

time when n=2.

 Command will be executed when X0=ON. Command won’t be executed if X0=OFF

and the content of previous reading data won’t change.

X0

FROM K0 K24 D0 K2

API Adaptive model

ES EP EH

79 DTO P Special module CR

data write in   

Bit device Word device

X Y M S K H KnX KnY KnM KnS T C D E F

m1 ¼ ¼

m2 ¼ ¼

S ¼ ¼ ¼ ¼ ¼ ¼ ¼ ¼ ¼ ¼ ¼

n ¼ ¼

 Note: The usage range of operand m1 is 0~7.

The usage range of operand m2: ES/EP:

0-48, EH: 0-254.

The usage range of operand n: ES/EP:

1~(49-m2), EH: 1~(255-m2).

For ES series, it doesn’t support pulse

execution command (TOP, DTOP)

16-bit command (9 STEPS)

TO Continuous

execution TOP Pulse

execution

32-bit command (17 STEPS)

DTO Continuous

execution DTOP Pulse

execution

 Flag: When M1083 on, it allows to

enable the interrupt during

FROM/TO. Refer to below for

detail.

Command

Explanation

 : the number of special module. : the number of CR (Control Register) of

special module that will be wrote in. : the data to write in CR. : the data

number to write in one time.

 DVP-series PLC uses this command to write data into CR of special module.

 : When assigning bit operand, K1~K4 can be used for 16-bit and K5~K8 can be

used for 32-bit.

Program

Example

 Use 32-bit command DTO, program will write D11 and D10 to CR#3 and CR#2 of

special module#0. It only writes one group of data in one time when=1.

 Command will be executed when X0=ON, will not be executed when X0=OFF. The

previous write data won’t be changed.

X0

K0 K2 D0DTO K1

Footnote

 The rule of command operand

 m1: arrangement number of special module. The number of special module

that connects to PLC MPU. The number sequence of special module from the

closest to the furthest of MPU is from 0 to 7. 8 modules is the max and it won’t

occupy I/O point.

 m2: the number of CR. There are 49 CR (Control Register) with 16-bit each

built-in memory in the special module. The number of CR uses decimal digital

(#0~#48). All running status and setting values of special module have

included.

 FROM/TO command is used to read/write CR data 1pcs at a time, while

DFROM/DTO command is used to read/write CR data 2pcs in one time.

CR #10 CR #9

Upper 16-bit Lower 16-bit

Specified CR number

 The number of transmission groups n. The meaning of n=2 of 16-bit

command and n=1 of 32-bit are the same.

D0

D1

D2

D3

D4

D5

CR #5

CR #6

CR #7

CR #8

CR #9

CR #10

D0

D1

D2

D3

D4

D5

CR #5

CR #6

CR #7

CR #8

CR #9

CR #10

Specified device Specified C

R

Specified device Specified CR

16-bit command when n=6 32-bit command when n=3

 In ES series models, flag M1083 is not provided. All interrupts (including external or

internal interrupt subroutines) will be disabled when FROM/TO command is

executed. Interrupts will be resumed after FROM/TO command complete. Please be

advised FROM/TO command also can be executed in the interrupt subroutine.

 The function of the flag M1083 (FROM/TO mode exchange) provided in EP/EH

series models:

A. When M1083=Off, all interrupts (including external or internal interrupt

subroutines) will be disabled when FROM/TO command is executed. The

Interrupts will resumed after FROM/TO command complete. Please be

advised FROM/TO command can be executed in the interrupt subroutine.

B. When M1083=On, if an interrupt enable occurs while FROM/TO command

are executing, the interrupt FROM/TO command will be blocked till the

requested interrupt finish. Unlike M1080 off situation, FROM/TO command

cannot be executed in the interrupt subroutine.