Interface class for the connection between variables and the data sampling. More...

#include <uadatavariablecache.h>

Public Member Functions
virtual	~CacheSignal ()
	destruction

virtual void	setChanged ()=0
	Signal a change in value or state.

virtual OpcUa_UInt32	getSamplingRate ()=0
	Get the sampling rate of the item.

virtual UaNumericRange *	getIndexRange ()
	Get the index range for the sampling item. More...

virtual OpcUa_Boolean	isPercentDeadband (OpcUa_Double &absoluteChange)
	Indicates if percent deadband is requested and provides the value of the absulute change necessary to pass the deadband filter. More...

virtual void	setInvalid ()=0
	Set the item invalid.

virtual OpcUa_UInt32	hIOVariable ()=0
	Get the item handle for the signal defined by the IOManager.

Detailed Description

Interface class for the connection between variables and the data sampling.

This class defines the abstract interface for the connection between a variable and the sampling item in an IOManager implementation. It is used to signal changes of the variable value and to indicate that the variable is not longer valid.

Member Function Documentation

virtual UaNumericRange* CacheSignal::getIndexRange ( )

inlinevirtual

Get the index range for the sampling item.

Returns NULL if no index range is set

virtual OpcUa_Boolean CacheSignal::isPercentDeadband ( OpcUa_Double & absoluteChange )

inlinevirtual

Indicates if percent deadband is requested and provides the value of the absulute change necessary to pass the deadband filter.

The documentation for this class was generated from the following file:

C:/work/uasdkcpp/src/uaserver/uaservercpp/coremodule/uadatavariablecache.h

Public Member Functions

Detailed Description

Member Function Documentation