Issue
Time stamps in interval Trend logs of bCX4040 and b3 controllers gradually drift starting in hundredths of a second and eventually accumulating into seconds.
In the screen shot below, a Trend log with 15 minute interval was started at 11:00:00 and the entries start correctly aligned at the 15,30,45 and 00 minutes of the hour.
After a while, the time stamps experience a drift as seen below
Over time the time drift accumulates into seconds and minutes if not corrected
Product Line
Andover Continuum
Environment
- Continuum bCX4040
- Continuum b3s
Cause
The cause of the drift is unknown, at this time but it is assumed to be a firmware defect.
Resolution
A PE program can be configured in CyberStation to periodically remove the drift. Note that the progr...