I have an MQTT Engine tag that is in alarm and the data for that Edge Nodes has gone stale (RTU is not online anymore).
Now the enable property is bounded and while online it was true. It was true when it went offline but now it is false but it's not re-triggering the binding for the enable property.
How do I get the enable property binding to fire again?
Maybe restart tag? It's a right click option.
That's why I thought would work but an error pops up and says "Bad_Unsupported"
I'm curious about how people handle this. I have sever tags in the alarm state but shouldn't be in alarm anymore but the RTU was powered off while in the alarm state.
If the enable property of the tag re-evaluated then the alarm would be in a cleared state because it would then become disabled.
Bindings on alarm properties only evaluate on tag restart or an actual alarm event.
A binding that controls alarm enable will only be evaluated on an alarm state change, and there will be no more state changes once disabled.
The general alternative is to use a separate expression tag to compute the enable state, and use a valueChange event on that expression tag to write to the affected alarms.