3 Replies Latest reply on Sep 23, 2011 1:23 PM by Johan_Van_Acker

    Displaying a X-Y trend is very slow

    Johan_Van_Acker

      Hello,

       

       

       

      we are working with processbook to display a X-Y trend.
      The values come from a DeltaV station, these are OPCHDA data.
      There's no PI server, but a PI Protocol Converter.

      When displaying a X-Y trend with 2 hours history, and 8 pen it takes about 8 minutes to display the trend.
      We want to be able to add/remove pen, but because of the time it takes it is nearly impossible (too slow).

      Would there be a workaround, or maybe a new version of processook is able to display X-Y trend faster ?

      P.S. :
      Processbook version : 3.1.0.1
      PI Protocol converter version : not found (?)
      PI OPCHDActr version : 1.0.1.43
      PI SDK : 1.3.6.361
      PI Converter Data Engine : 1.0.1.43
      PI Protocol converter APS Connector (piPCAPSCtr) : 1.0.0.1

       

       

       

      We have several ways to display a X-Y trend :

       

      -          Intrerpolated

       

      -          Recorded

       

      -          Synchronized

       

      ...and actually we don’t know which one to use, each having advantages and disadvantages.

       

      Would you have some advices ?

       

       

       

      Thanx