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11. Modbus TCP server
11. 6. “Write Single Register” (6) function
This Modbus request is used to write a given value (Preset Data) to the address supplied (Register Address).
Request format:
Response format:
Exception response format:
Byte Meaning
0 Function Code = 16#06
1 Register Address Hi
2 Register Address Lo
3 Preset Data Hi
4 Preset Data Lo
Byte Meaning
0 Function Code = 16#06
1 Register Address Hi
2 Register Address Lo
3 Preset Data Hi
4 Preset Data Lo
Byte Meaning With the VW3A3310d Ethernet card
0 Function Code = 16#86
1 Exception Code
01 (Illegal Function)
02 (Illegal Data Address)
03 (Illegal Data Value)
04 (Illegal Response Length)