Applies To:
  • CitectSCADA 6.xx, 7.00
  • CitectHMI 6.xx, 7.00

I am using trend redundancy, and when I view some trends after a backfilling operation has completed, I will occasionally still see gaps that I know should not be there. This occurs randomly on different PCs. What is causing these incorrect gaps?  

During the trend redundancy backfilling process, real gaps in trends will be filled on the fly, however the display of the trend pen itself is known to occasionally fail to update itself. To ensure the display is up-to-date, scroll the trend back one timespan and then forward again. This will force a re-draw of the trend pens and will reveal any real gaps left in the data.  

trend gap update incorrect