Omron CJ1W-SCU32 Operation Manual page 270

7 Using Modbus-RTU Slave Mode
Diagnostic
Function
Executes an echoback test. Send data will be returned.
Command
Function Code
Sub-function Code
Data
* From 2 to 125 (2 to 7D hex) bytes can be specified.
Response
Function Code
Sub-function Code
Data
* Same as Data in Command.
Sending A537 Hex
Request
Function Code
Sub-function Code (H)
Sub-function Code (L)
Data (H)
Data (L)
Write Multiple Coils
Function
Writes multiple bits in the memory used for CJ-series Unit. Allocated memory is in the CIO Area
(fixed).
Command
Function Code
Starting Address
Quantity of Output
Byte Count
Output Value
7-20
Length
1 byte
2 bytes
N × 2 bytes (*)
Length
1 byte
2 bytes
N × 2 bytes (*)
Data
06 hex Function Code
00 hex Sub-function Code (H)
00 hex Sub-function Code (L)
A5 hex Data (H)
37 hex Data (L)
Length
1 byte
2 bytes
2 bytes
1 byte
n byte
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
Data
08 hex
0000 hex
---
Data
08 hex
0000 hex
---
Response
Data
06 hex
00 hex
00 hex
A5 hex
37 hex
Data
0F hex
0000 to FFFF hex
0001 to 03E8 hex
N
n = N or N + 1