3 Replies Latest reply on Jun 5, 2018 1:04 PM by vwolf

    Engingeering units are created wrong for cascade control blocks in DeltaV

    a.olsen

      Hello,

      We use DeltaV for plant control. Sometime after a DeltaV upgrade to v12, cascade control blocks would create and sync the engineering units of the PV tags as %. Nobody knows why it does this, and are unable to rectify it. The set point EU in the same block are created and synced in the proper EU (°F, PSIG, etc) but the PV we use for most all display and spreadsheets return the percentage of the control. We would like to see the EU.

      For example;

      In the above list, the SP and PV should read °F as the EU. It is only like this on cascade control loops.

      We use the OPCHDA connector and I can't see where there is anything else to map to to fix it.

       

      I was just curious to see if anyone else has ever had this issue.