Omron NV3Q Connection Manual page 128

Modbus Slave (RTU Mode)
Function Code 05: Write single internal bit
■ Commands
PT slave Function
address code
05 hex
1 byte 1 byte
■
Responses
PT slave Function
address code
05 hex
1 byte 1 byte
104
Bit address, Bit address,
upper byte lower byte
1 byte 1 byte
Bit address, Bit address,
upper byte lower byte
1 byte 1 byte
Item
PT slave address Specify the slave address of the PT to which to send the message.
Function code
Bit address
Status
specification
Error check
The response will contain the same message as the command.
Additional Information
To convert a GR address in internal memory to a bit address, use the rightmost
digit of the GR address as the rightmost digit of the bit address and convert the
remaining digits from decimal to hexadecimal.
Example:
GRA to 000A
GR1E to 001E
GR153 to 00F3
GR163 to 0103
GR225F to 0FFF
Status Status
specification, specification,
upper byte lower byte
1 byte 1 byte
Status Status
specification, specification,
upper byte lower byte
1 byte 1 byte
For slave address 20, specify 14 hex.
Specify 05 hex.
Specify the Internal bit address to write in hexadecimal.
For GR173, specify 01 hex, 13 hex.
To specify ON, use FF hex (upper byte), 00 hex (lower byte)
To specify OFF, use 00 hex, 00 hex
The CRC-16 values are sent and received.
Section 11-1
Error check, Error check,
upper byte lower byte
1 byte 1 byte
Error check, Error check,
upper byte lower byte
1 byte 1 byte
Function