How to modify a Microsmart point, learned as a Numeric Point, using the Niagara G3 DMS driver.

Issue

A Niagara G3 DMS driver is being used to integrate an existing DMS system with Microsmart controllers.  Setpoint values are provided to LOOP points in the Microsmart with Application Type 7 points (AP7) which can also be referred to as Chain Calculation points.  The AP7 points are not linked to the DMS database.  They are learned into the Niagara G3 station as Numeric Points and do not have the option to be writable.

How can this be achieved?

Product Line

TAC I/A Series

Environment

Niagara G3

DMS

Microsmart

Cause

Microsmart AP7 points are learned into a Niagara G3 as Numeric points and are not writable.

Resolution

Learn the AP7 point's PVALU element into the database:

Go to the Property Sheet of the object above and add a Command String:

An action option will now appear on the Wire Sheet (transferable to a graphic):