Omron E5AR - MANUAL 2

7.9 Commands and responses (Communication/Modbus)
7-29
Communication
(Modbus)
When the control mode is set to cascade control, perform the local SP/
remote SP operation command of CH2.
The above indicates a normal end. For information on error responses,
see "7.7 Operation commands (Communication/Modbus)" (P.7-14).
■ Echo back test
This command is used to perform an echo back test.
The command can be used in any state of the E5AR/ER.
The test data can be any two bytes of hexadecimal data.
The above indicates a normal end. For information on error responses,
see "7.7 Operation commands (Communication/Modbus)" (P.7-14).
Response
H’06 H’00 H’00 H’0D
Slave
address
Function
mode
Write start
address
Instruction
code
Related
information
CRC-16
2 2 bytes211
Command
H’08 H’00 H’00
Slave
address
Function
mode
Write start
address Test data
CRC-16
2 2 bytes211
Response
H’08 H’00 H’00
Slave
address
Function
mode
Write start
address Test data
CRC-16
2 2 bytes211