Applies To:
  • CitectSCADA 5.xx
  • CitectHMI 5.xx

On the trend system whilst the trends are trending correctly, the display of the trend is always lagging 15 minutes behind real time. Shutting down servers had no effect. In 15 minutes you could view the data correctly, just never in real time. The trend client had a gap for this period in time. Clicking the button to scroll to real time had no effect. 

The solution to this problem was caused by an incorrect date or time stamping on a file. In this particular case one of the Trend Archive files had a date stamp on the file in the future. That is the system date and clock were less than the timestamp of the files creation date. After deleting the culprit archive file, the trend system resumed normal operation again and you should be able to view all data in real time.

Whilst unsure of the cause in this instance, it is suspected that the date and time was incorrectly set and a new trend archive file was created in this period, thereby causing the problem.