PTMAP maintains a local data store of point information for each application. The application must declare the points that it accesses before using that point in a Point Management request.

Applications declare the points with the function PTMAP_add_point. When that function is called, PTMAP communicates with PTX (the Point Translation Process) to validate that the point is configured in the system and to access the point's configuration data.

Once a point has been added to the local data store, it can be referenced in multiple requests. PTMAP maintains the point in its local store until the application removes it by calling the function PTMAP_remove_point.

The subroutines are:

PTMAP_add_point	Add Point To Local Data Storage
PTMAP_add_pt_list	Add Points To The Local Data Store From A List
PTMAP_remove_point	Remove A Point From The Local Data Store

More information

Point Management Application Interface overview.

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