Applies To:
  • CitectSCADA 5.20, 5.21
Summary:
CTAPI could return incorrect data if more than one query were running simultaneously.  This is due to the query device used by trend history or alarm queries not being fully protected. 

Solution:
CIT has confirmed this to be a problem in Citect for Windows versions 5.20 to 5.21. This problem has been fixed in version 5.21 Service Pack F. 
Keywords:
 

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