Apex - mysterious "Set OFF" notifications

jgvergo

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I keep getting "Set OFF" notifications, but I don't understand what output is causing it. Any ideas on how to debug this @Terence?
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Have you gone to the probe page in fusion to make sure that none of the range alarms are active? When I’ve had weird alarm notifications, it’s usually been that.
 
One cause for this is one of your probes crossing a threshold for a split second, and then going back into the normal range. The activation statement may not be generated, but the OFF statement is.
This is one reason why it's good to have a short Defer statement included with your base_email code; to prevent momentary activations.
 
To expand on what @rkpetersen said, the controller checks the status of probes more often than it reports them (I think it checks once a second but only reports once a minute, or something like that.) Anyway, if you have an alarm state that is only transiently on you can get an alarm report, even though you never see the condition that caused it. Defer statements go along way towards minimizing these.
 
Thanks! I will hopefully be able to track this down now. I'm just waiting for the next Set OFF. I'll post the conclusion when I understand it.
 

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