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Manipulate an ACT-TIME, on-line value in an EDC block

We had a scenario where an active time value was reset from the graphic screen by accident. Supervisor wants the value put back to where it was at prior to being reset. I can see the act_time  in the EDC1 function block while in online view in control studio on the specific control module, but I cannot set value and submit my change. I've tried to set the value and also just edit the time but the OK button remains greyed out. We are running DeltaV V13.1

Caleb Holland

Controls and Instrumentation Specialist

2 Replies

  • Hoping to hear a good answer as well soon.  We recently setup some operational and maintenance alerts based on the runtime, and I utilized the EDC\ACT_TIME parameter.  I too did not realize the value couldn't be manipulated online similar to a timer block's elapsed time.  Inevitably, the time will get reset by accident.

    Even tried OPCWatchit, but wasn't surprised at the result:

  • In reply to Greg Bayne:

    That parameter isn't writeable in the controller, you will need to have logic and parameters put in to be able to accomplish what you want to do.

    Something like:
    '^/ACT_TIME.CV' := '^/EDC1/ACT_TIME.CV' + '^/OFFSET.CV';

    Then you would need something to reset the OFFSET at some point, next reset?