ModbusTCP_WriteSingleRegister
Function Code 06. Writes a single holding register in a remote device
Syntax
C++
Python
def ModbusTCP_WriteSingleRegister( inSocket: int, inValue: int, /, *, inTimeout: int | None = None, inUnitID: int = 1, inRegisterAddress: int = 0 ) -> None
Parameters
| Name | Type | Range | Default | Description | |
|---|---|---|---|---|---|
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inSocket | int | Connected socket ID on port 502. | ||
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inTimeout | int | None | 10 - ![]() |
None | Timeout in milliseconds, block if not specified. |
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inUnitID | int | 0 - 255 | 1 | Default is 1. |
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inRegisterAddress | int | 0 - 65535 | 0 | The address of the holding register to be written. |
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inValue | int | 0 - 65535 | Value to send. |


