05.03.2024, 15:45
(05.03.2024, 06:10)admin Wrote: You can simply use a 230V relay connected to a KNX binary input to monitor external power. Clearing storage is needed. Otherwise if LM is rebooted for any other reason than UPS power loss then old thermostat values will be restored.Reboot "for other reason" scenario never crossed my mind. However using the simple relay, that is, without introducing time delay for value true will ignore event script in case BA2.2 (see attachment).
So, in order to use a simple relay contact we could either resend digital input value cyclically in the bus or use a flag to store that power failure actually happened, every time power gets cut. This flag will be checked (if true) in the start-up script in order to resend values and then it will be (always) reset.
POWER UP DIAGRAM.pdf (Size: 80.34 KB / Downloads: 15)