System Status Viwer Aspect - Status Not Available
800xA 5.1 rev. D
Redundant AS, CS (AC800M), CS(3rd party OPC)
Verified no abb services were interrupted or undefined
Verfied no 800xA system hardware or service alarms were present that could be related to this issue
Verified network connectivity of servers through RNRP (both network connections up for each of the servers.)
We have PG2 graphics created for each of the 14 controllers in our system. The PG2 graphic contains an aspect view wrapper which allows us to display the "System Status Viewer" aspect.
Recently we noticed the the status indications displayed on these graphics cyclically go from green (Good) to Red (Status not available) and back to green (good) for the hardware that is being displayed in the "System Status Viewer" aspect. The period of this status cycling is roughly 1-2 minutes. Note these graphics have generally taken considerably more time to load relative other process graphics which do not use the aspect view wrapper.
We have performed several tests to try to get a better understanding of what may be causing this.
- Compared two HMIs displaying the same graphic displays. Each of the HMIs show approximately the same thing with slight latency differences. In some case there will be large differences in the number of bad vs good status.
- Compared two HMIs displaying the same graphic displays. Once bad status was appearing on both, one HMI was left untouched, and the other HMI was forced manually to refresh the graphic. The result was the once left untrouched remained bad status while the other which was forced to refresh showed mostly good status for the hardware elements in the system status viewer aspect.
- Evaluated the process data for a controller showing bad system status viewer status. The data quality on the process graphic appeared to be unaffected and the data continues to update.
-To be certain this wasn't a single controller issue we monitored several controller's system status viewer aspects. Each one displayed the same bad status at roughly the same time noting a message status not available.
Any thoughts on what could be causing this problem?
Should I be concerned about process data quality?
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