VarListRead (FUN)

FUNCTION VarListRead : Error

Reads the cached (last retrieved) values from the given variable list.

Important

Must be called only in code protected by VarListEnter and VarListLeave

InOut:

Scope	Name	Type	Comment
Return	VarListRead	Error	An errorcode representing the result of this operation
Input	hPlcHandler	SysTypes.RTS_IEC_HANDLE	The instance of the PLCHandler to work on.
	hVarList	SysTypes.RTS_IEC_HANDLE	The varlist to read the values from
Output	ppVarInfos	POINTER TO POINTER TO VariableValue	An ARRAY OF POINTERs to VarInfo instances representing each single read value
	numVars	UDINT	The number of variables in ppVarInfos