8 Replies Latest reply on Aug 17, 2018 1:45 PM by sraposo

    PI tag from analytics not displaying correct data

    Marq

      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?