AnsweredAssumed Answered

PI tag from analytics not displaying correct data

Question asked by Marq on Jul 3, 2018
Latest reply on Aug 17, 2018 by sraposo

I am using the tagmax and tagmin PE functions in a PI AF analytics to calculate the difference between the max and min values for a PI tag over a set time period.  I am outputting the difference as a PI tag.  If I backfill and preview the PI tag data it shows the expected differences.  If I look at the trend for the data it appears interpolated and averaged between the data points.  When I pull the data into excel with PI Datalink the data is interpolated.  Here is an example:

DatePI datalinkpreview data
7/25/201817 695538
7/26/201830 25725 607

I was wondering what the issue is.  Do I need to change something fundamental about the PI tag so that it only displays discreet data and doesn't try to interpolate it?

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