| Applies To: |
|
| Summary: |
| We are seeing hardware errors on Momentum
PLC's. If we go off the graphic page for > 10 seconds and then
go back to the said page the kernel will display an error like the
following:
"Wed Feb 27 17:45:57 2002 01:33:21.059
Error: Channel offline, cannot talk Citect then re-establishes communications but if I go off the page then the same happens again. |
| Solution: |
| The Momentum PLC closes socket connections
after a period of no use that is greater than 10 seconds. This is a
designed feature to maximise the use of the small number of sockets
available for communications within the momentum.
However in an application a simple workaround should help; such as putting in a single alarm or trend tag that is read every 4 seconds or so, regardless of the opened page. |
| Keywords: |
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