Need to why PE expression TAGTOT & TAGAVG generates the same value
Your post does not give us very much detail to diagnose your issue. I suspect the source tag only had one event in the time range you are trying to evaluate. If a pi point only has one event in the time range the total for that tag will be the same as the average for that tag ( X (the total) = X ÷ 1 (the total values divided by the number of events)).
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