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?

Best regards,

Torbjørn Sigurdsen

I would have thought that TagMean * EventCount using PI Calculation would have given you what you want. Can you share a bit more of your PI Calculation configuration and how you are attempting to verify the result?