Read (FB)¶

FUNCTION_BLOCK Read EXTENDS CBML.ETrig IMPLEMENTS IReader, IOPCUAClientDataAccessCallback, IMemoryHandler

This function block reads values from the OPC UA server.

InOut:

Scope	Name	Type	Comment	Inherited from
Input	xExecute	BOOL		ETrig
Output	xDone	BOOL		ETrig
	xBusy	BOOL		ETrig
	xError	BOOL		ETrig
Input	itfValueSet	IValueSet	The values to read
	itfConnection	IConnection	The connection of the UA.Client
Output	eErrorID	ERROR	The error code of the request
	xValueSetDiagnosis	BOOL	TRUE: At least one value in the ValueSet has diagnostic information - Check all UA.Value.eError FALSE: All values in the ValueSet report NO_ERROR

Methods:

ResetAction

Structure: