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PrevEvent or PrevVal with manual data entry

Question asked by Ervin Tovalino Espinoza on Sep 11, 2018
Latest reply on Sep 12, 2018 by Ervin Tovalino Espinoza

Hello all again:

 

I have got manual data entry in a custom symbol developed by Anna Perry in PI Vision. I am using an analysis to get the last value entry but it looks like it is not working properly because the result is not as expected.

 

I use PrevVal as PrevVal('tagname','*'). Evaluation every 10 minutes

I use PrevEvent as TagVal('tagname',PrevEvent('tagname','*') Evaluation every 10 minutes with offset: 09 minutes

 

Screenshot of Archive Editor

 

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