IAC timeout alarm During OLU
During OLU at Step7 when we Switch Primary (Handover Time) , the First Alarm which comes out in the Alarm list is "IAC Communication Timeout",
these "IAC Communication Timeout" Alarms will also comes for all the other Controller to which it is communicated (IAC Clients ).
Is it is Normal ?
System Version:ABB800xA 5.1 FP4 Rev-E , AC800M
these "IAC Communication Timeout" Alarms will also comes for all the other Controller to which it is communicated (IAC Clients ).
Is it is Normal ?
System Version:ABB800xA 5.1 FP4 Rev-E , AC800M
Asked 1 year ago
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1
Hi!
The "AC800M Configuration manual" (3BSE035980-510) states:
BR
The "AC800M Configuration manual" (3BSE035980-510) states:
• MMSConnect is down for approximately 2s before and 2s after the switch over.
BR
Answered 1 year ago
Answers
0
Hi,
It seems like controller handover is taking more time than time configured for timeout configuration.
It seems like controller handover is taking more time than time configured for timeout configuration.
For Online Upgrade when using Safe MMS communication, ensure that the OLUTimeOut parameter is set to 30000ms and that the UseOLUTimeOut parameter is set to true in the MMSRead control modules. This avoids any interruption in connection during the whole Online Upgrade process.
If SIL IAC (using communication variables) is used for communication between applications, the timeout during Online Upgrade is automatically extended to 30000ms or to the configured timeout value if that is longer. This avoids any interruption in connection during the whole Online Upgrade process.
Thanks
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