Applies To:
  • CitectSCADA 1.00, 1.01, 1.10, 1.11, 1.20, 2.00, 2.01
Summary:
What can I do about the Overrun error with the COMx driver? 

Solution:
If you are getting driver error code 1 (Overrun error) when using the COMx driver, it means that the UART device cannot process incoming characters fast enough. Try the following Citect.INI variable to prevent CITECT from turning off interrupt for too long.

[KERNEL]
TmrIntDisable=0

This option may cause problems with some protocol drivers. If you experience crashes or loss of communication after setting this option you should remove it. 
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