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CLX41E PLC communication issue #40

Open awattsFNAL opened 7 months ago

awattsFNAL commented 7 months ago

Communication issues between CLX41E and AP-0 PLC for airborne radiation monitoring. https://www-bd.fnal.gov/Elog/?orEntryId=249750

awattsFNAL commented 7 months ago

From Keith:

Received call from MCR on my way home Wednesday. Spent part of Thursday debugging w/ Ops and Dave Peterson. Ops were inundated w/ alarms and missing data from the AP0 Lens system (ap0-intlk-plc1) . Devices affected were intermittently returning (57 2) errors (The device is not connected, but the device could reconnect). Looking at data via the D44 datalogger, we can see that AP0 lens data was intermittently logged. I find no entries in the CLX41 log pertaining to modbus reconnections w/ ap0-intlk-plc1 and Dave Peterson found nothing on the PLC (up since 18 Sept). D44 plots and parameter page w/ affected devices attached.

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