[Nut-upsuser] turn UPS off after PC shutdown

[Dario Novakovic]

Thanks Jim and Robert!

I confirmed that ups understands "turn off" request from the PC, with "upsdrvctl shutdown".
However, I am not sure if "killpower" file is created, when ups goes on battery.

On the other hand I am not sure how CyberPower UPS interprets config params: offdelay, ups.delay.shutdown, ups.timer.shutdown. I have been through so many docs, forums, issue reports, etc.
This is so confusing and messy, I am giving up. 


Thanks all,
Dario




On Thursday, June 12, 2025 at 05:15:02 PM GMT+2, Dario Novakovic via Nut-upsuser <nut-upsuser at alioth-lists.debian.net> wrote: 

I am using truenas with Cyber power CP900EPFCLCD UPS. All is well, server shuts down after power loss in specified time.

Problem is that UPS remains ON. I would like UPS to turn OFF and I will turn it on, when the power comes back. I tried many various configuration but it does not affect the UPS.

Before I send all my config files and everything, I would like to understand how it works. 

I have been messing with nut for days, setting various "delay"s, tried many different settings and configs but I feel like I am missing something. I have couple of general questions:

1. Is it possible to turn the UPS off, after PC shut down.
2. If yes, how does it work? What makes UPS go off, when PC is off? What kind of command or information is sent to UPS to make it turn off
3. What is the purpose of "ups.delay.shutdown". Documentation says "Interval to wait after shutdown with delay command (seconds)". "Wait" for what exactly?


Thanks,
Dario

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