ABB 800xA 5.1.1. We have redundant OPC servers and redundant AS along with 4 OWS. At server level everything seems OK but the problem is that some of the screens on 2 of the OWS are displaying some OPC tags as bad data quality however same tags on other 2 OWS are displaying good data. Please advise.
Check your affinity settings or simply have a look at the Afw Service Connection Status on the affected clients. You will see with whitch CS they communicate. Shut down this CS, the client will switch to the other one. If all is fine now then you have found the "bad" CS. Maybe a reboot solve your issue otherwise you have to investigate that CS.