IDatasourcesMgr.UseData (METH)ΒΆ

METHOD UseData : SysTypes.RTS_IEC_RESULT

Activates the item of the given instance path for monitoring.

Note

The items are reference counted so each call to IDatasourcesMgr.UseData requires a matching call to IDatasourcesMgr.ReleaseData

Note

Usually items are monitored in total. If you want to expand the items (to prevent problems with different alignment etc.) then consider using the method IDatasourcesMgr3.UseDataExpanding instead.

InOut:

Scope

Name

Type

Comment

Return

UseData

SysTypes.RTS_IEC_RESULT

Returns a runtime system error code (see CmpErrors.library) or one of Errors

Input

pstSymbol

POINTER TO STRING

The symbolic name of the variable to activate. Here the name of the variable on the local PLC/HMI is expected.