I have a question which I thought was elementary.
A tag has values every now and then (say every day, but incidentally two values on the same day and some days without values).
I need to know the sum of these values from a given time untill now in Processbook, without ODBC or PI Totalizer, ACE, VBA or Datalink. Can I do this with PI Calculation?
I tried TagMean*EventCount, but I have a hard time getting the correct answer.
Anyone tried this?