ModbusTCP_ReadDiscreteInputs


Function Code 02. Reads contiguous status of discrete inputs in a remote device

Syntax

C++
Python
 
def ModbusTCP_ReadDiscreteInputs(
	inSocket: int,
	/,
	*,
	inTimeout: int | None = None,
	inUnitID: int = 1,
	inStartingAddress: int = 0,
	inBitCount: int = 1
)
-> outBits: list[bool]

Parameters

Name Type Range Default Description
Input value inSocket int Connected socket ID on port 502.
Input value inTimeout int | None 10 - None Timeout in milliseconds, block if not specified.
Input value inUnitID int 0 - 255 1 Default is 1.
Input value inStartingAddress int 0 - 65535 0 The address of the first input.
Input value inBitCount int 1 - 2000 1 Requested number of bits.
Output value outBits list[bool] Response.