I need help with implementing an alarm/event to notify when a certificate in BACnet secure connect links is going to expire within the next 90 days.
Should I use event notifications or directly use the BACnet Multi-state/analog Value point Object to generate the alarm? Which approach is preferable?
For monitoring certificate expiration in BACnet Secure Connect Links, if you only need to track the next 90 days, using a BACnet Multi-state/Analog Value Point object could be simpler. If you want more flexibility for different alarms, then go for event notifications.
Since the cert expiring could trip-up your connectivity, I'd be tempted to say it would be nice if you could have (/at least consider having) both; the event notifications sounding like the right but possibly more complex way to do things, but a Multi-State Input could appease developers or logic integrating with your system.
But on the whole, maybe you should be managing the certificates at a higher-level, in a possibly better (cross-cutting all devices) agnostic way.
