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PI performance equation which calculates only when there is an archived value for the raw tag in a time period or return null

Question asked by Vineetkumar on Apr 1, 2020
Latest reply on Apr 1, 2020 by TimCarmichael

Hello Guys,

 

Good Day,

 

I need a PI performance equation which calculates only when there is an archived value for the raw tag in a time period, say, 9AM to 10 AM and return "null" if there is no value for the raw tag in the specified period. I did a lot of research but am stuck. Thanks in advance.

 

Regards

Vineet

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