On Mar 23, 2015, at 10:33 AM, Rob Groner <[email protected]> wrote:

> Ok, so the reason I keep asking about this is in case I have to actually 
> implement this in our UPS.
>  
>  
> I meant that a human could power the UPS back on. Nearly all of the UPSes I 
> have worked on have momentary power buttons (either toggle on/off, or a pair 
> of on and off buttons).
>  
> So, when a power-off-stay-off comes through, then the UPS *itself* shuts down 
> as well, and essentially goes into a soft-off that won’t respond to resumed 
> AC power from the wall outlet?  And when the UPS *does* get powered back on 
> (via a button press), then the power outlet for the PC will come back on as 
> well….  I see.  So the UPS basically has an “ignore the wall power” flag that 
> gets set when you tell it stayoff, and for poweroff-return, it wouldn’t 
> ignore wall power, and so would come back on when AC is restored.

Yes.

It's a little closer to what some PC BIOSes default to, where they will stay 
off when power comes back, if they were last commanded to turn off.

-- 
Charles Lepple
clepple@gmail



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