Applies To:
  • CitectSCADA 3.40 4.20

Running CiNet will cause Out of Buffers NCBPool error messages in the kernel window. CiNet will then stop working. 

The default Lan Watch Time has been reduced from 30 seconds to 2 seconds in version 3.40 and 4.20. This has been done to give faster change over times when a primary Citect server fails. The reduced watch time will cause CiNet to generate Out of Buffers in the NCBPool error message and cause CiNet to stop communicating. To resolve this problem set the Lan Watch time back to 30 seconds by setting the following parameter:


The default number of network receive buffers has been increased from 2 to 16 in version 4.20 to give extra performance. This default will only increase if running Citect under Windows NT. The default remains at 2 when running Citect under Windows 95. You may want to reduce the number of receive buffers to 2 if you are only using CINET as will not increase the performance.