CheckSymbolValidity (FUN)

FUNCTION CheckSymbolValidity : Error

This function checks whether the requested symbol is valid and can be monitored by calling VarListDefine for example.

InOut:

Scope	Name	Type	Comment
Return	CheckSymbolValidity	Error	An error code, ERR_OK in case the symbol is valid
Input	hPlcHandler	SysTypes.RTS_IEC_HANDLE	The instance to check the symbol on
	pstSymbol	POINTER TO BYTE	The symbol to check for validity