Omron NV3Q Series, Connection Manual

Page: 129 / 145

105
Modbus Slave (RTU Mode)
Section 11-1
Function Code 06: Write data register, one word
■ Commands
■
Responses
The response will contain the same message as the command.
PT slave
address Function
code
06 hex Data register
address,
upper byte Data register
address,
lower byte Write data,
upper byte Write data,
lower byte Error check,
upper byte Error check,
lower byte
1 byte 1 byte 1 byte 1 byte 1 byte 1 byte 1 byte 1 byte
PT slave
address Function
code
06 hex Data register
address,
upper byte Data register
address,
lower byte Write data,
upper byte Write data,
lower byte Error check,
upper byte Error check,
lower byte
1 byte 1 byte 1 byte 1 byte 1 byte 1 byte 1 byte 1 byte
Item Function
PT slave address Specify the slave address of the PT to which to send the message.
For slave address 20, specify 14 hex.
Function code Specify 06 hex.
Data register
address Specify the data register address to write in hexadecimal.
For GDT510, specify 01 hex, FE hex.
Write data Send the value to write with the upper byte first, followed by the
lower byte. To write 1234 hex, specify 12 hex, 34 hex.
Error check The CRC-16 values are sent and received.