Issue
Modbus points on a CX9680 have very long update time. Points can take hours to update. LAN capture file shows no issues.
Down reving the NetController to firmware 2.000014 restored normal point update times. This problem recurs when the controller is upgraded to any higher version.
Environment
- Modbus TCP/IP
- xdriver
- CX9680
Cause
Slow update times may be related to a known issue that was corrected in the new Modbus TCP/IP xdriver v 200017 that was released 2/14/2012
Resolution
Replace xdriver with version 2.00017.