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. I understand now (I think). Thank you for your patience in explaining. Sincerely, Rob Groner Software Engineer RTD Embedded Technologies, Inc. ISO9001 and AS9100 Certified Ph: 814-234-8087 www.rtd.com<http://www.rtd.com/>
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