Applies To:
  • CitectSCADA 5.31, 5.40, 5.41, 5.42, 5.50, 6.0, 6.1, 7.0
  • CitectHMI 5.31, 5.40, 5.41, 5.42, 5.50, 6.0, 6.1, 7.0
  • CitectFacilities 5.31, 5.40, 5.41, 5.42, 5.50, 6.0, 6.1, 7.0
  • CitectSCADA Batch 5.31, 5.40, 5.41, 5.42, 5.50, 6.0, 6.1, 7.0
  • CitectSCADA Pocket 5.31, 5.40, 5.41, 5.42, 5.50, 6.0, 6.1, 7.0
Summary:

By default, time-stamped alarms do not read the date from PLC, but rather get the local date from computer. If an alarm is generated at 23:59:58 Monday and there is a 3 seconds delay, Citect shows 23:59:58 Tuesday (i.e. a 24-hour shift is generated).

 

Solution:

Setting [Alarm]HresType = 4 in Citect.ini will cause Citect to retrieve the PLC time variable with the following format: number of seconds since 1970 and Citect can convert to the correct time and date.

NB: This may not work with millisecond timers.

 
Keywords:
 

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