Applies To:
  • CitectSCADA 4.xx, 5.xx
Summary:
If you set up the SquareD driver in Non-Interrupt (Polled) mode it comes up with an ErrorBox 'Invalid parameter' which has to be acknowledged. Everything works OK as it is running in polled mode, so this is just a cosmetic nuisance.  

Solution:
CIT has confirmed this to be a problem in Citect for Windows versions 4.x to 5.20. This problem has been fixed in Driver version 2.02 in Citect version 5.21 
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