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

TrnSetTable() does not write to the correct sample period when the data period passed in does not match the actual trend period. That is, if you pass in a value for the period parameter of TrnSetTable() which does not match the sample period defined in the trend tag database.

This problem does not apply if you pass in the actual sample period of the trend tag as the Period parameter of TrnSetTable(), or use the value 0 (which uses the trend tag sample period).
Citect has confirmed this to be a problem in CitectHMI/SCADA versions v6 to v6.1a.  We are researching this problem and will post new information here as it becomes available. 

trnsettable, trend, redundancy