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PrevVal and PrevEvent values in ACE

Question asked by Babar on Oct 6, 2016
Latest reply on Oct 6, 2016 by Dan Fishman


The requirement of my calculation is to find the previous value of a PI tag however, with the prevVal function, I am still getting the latest value. For the input tag, step is ON and I do not want to change the tag configuration.  What would be the simplest way to get the correct previous value?