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:
Byte | Meaning |
0Function Code = 16#06
1Register Address Hi
2Register Address Lo
3Preset Data Hi
4Preset Data Lo
Response format:
Byte | Meaning |
0Function Code = 16#06
1Register Address Hi
2Register Address Lo
3Preset Data Hi
4Preset Data Lo
Exception response format: |
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Byte | Meaning | With the VW3A3310d Ethernet card | ||
0 | Function Code = 16#86 |
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| 01 | (Illegal Function) | |
1 | Exception Code | 02 | (Illegal Data Address) | |
03 | (Illegal Data Value) | |||
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| 04 | (Illegal Response Length) | |
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36
