WriteISDU – OPC UA for IO-Link Devices and IO-Link Masters

The Method WriteISDU writes parameters on the device using the ISDU mechanism.

Signature

	WriteISDU (
		[in]	UInt16		Index,
		[in]	Byte			SubIndex,
		[in]	Byte[]		Data,
		[out]	UInt16		ErrorType,
		[out]	Int32			Status
		);

Argument	Description
Index	Index, 8-bit index and 16-bit index are both mapped to UInt16
SubIndex	SubIndex, set to 0 if not used
Data	Hex Values that need to be composed according to the IO-Link Specification
ErrorType	Hex Values converted to UInt16 returned as ErrorType in case the operation was not successful. Data needs to be interpreted according to the IO-Link Specification. 0 if the operation was successful.
Status	Returns the status of the operation. 0: OK, operation successful -1: Operation already running, either by same or different ISDU read or write -2: Device not active, either device not connected, not in operation mode or port is configured not to be in IO-Link mode -3: Operation executed but error code returned from device, details are provided in ErrorType