Applies To:
  • CitectSCADA 4.xx, 5.00, 5.01, 5.10, 5.20

You cannot print trends, TrnPrint(), if there is just one <gated> value on the trend screen. You can only print if you scale or scroll to a section of the trend that does not have any gated values on it. 

CIT has confirmed this to be a problem in Citect for Windows versions before 5.21. This problem has been fixed in version 5.21.

In versions prior to 5.21 you can modify _PltPenDataSet in so that it caters for error 309 (not just 302).