Applies To:
  • CitectSCADA 5.20

In V5.20, it was possible to cause an Assert by setting an I/O device to Linked, opening the Manual Refresh window, setting the device to Not Linked in the Citect Editor, and then attempting to do the refresh from the Manual Refresh window. Admittedly this is an incorrect use of the Manual Refresh functionality, but it is something an inexperienced user could easily do. 

CiT has confirmed this to be a problem in Citect for Windows version 5.20. This problem has been fixed in version 5.20 Service Pack B. An error message is now generated.