1 Reply Latest reply on Jun 13, 2017 7:37 PM by chuck

    Creating PiPoints in PI System Explorer

    ssmith

      Creating PiPoints in PI System Explorer - I know we simplify the material for the class, but when the class created the PIPoints in system explorer he used the substitution naming the AF Elements and Attributes the exact same name as the ITEM ID in the OPC Server.  In the real world the naming convention of the ITEM ID in the OPC will be more cryptic and the value of AF is to convert to more of a human language then machine language.  So %Element% or %attribute% will not work if the item id is HST.PROD1.PMP1.PRESS.PV.  We would define elements called Houston\Production Line 1\Pump_#\Pressure\. - How would we make a substitution template to handle this conversion to human language?  I know you can not fully answer this as it is not the focus of the class, but a general direction would be nice.

       

      Thanks

        • Re: Creating PiPoints in PI System Explorer
          chuck

          Yes, our example is pretty much the ideal case.  And might not be very realistic.  In a real world instrument system names for measurement points are rarely this easy to exploit.  So, what do folks do? In no particular order:

          • Attributes of an element might be used to hold strings which could be used in substitutions
          • Store the data reference strings in a table, perhaps in a table imported to AF or perhaps in an external SQL database
          • hard code the data references and not use substitution
            • in this event, maybe create all the tags ahead of time using Excel PI Builder add-in