Date: Fri, 27 Sep 2002 20:45:00 +0300 From: Petri Riihikallio <Petri.Riihikallio@Metis.fi> To: "Jack L. Stone" <jackstone@sage-one.net>, questions@FreeBSD.ORG Subject: Re: How to shut down cleanly by killing power Message-ID: <a05111b07b9ba4753fc73@[192.168.0.2]> In-Reply-To: <3.0.5.32.20020927113644.01026638@mail.sage-one.net> References: <3.0.5.32.20020927103653.01026638@mail.sage-one.net> <a05111b01b9b9ea46ac33@[192.168.0.2]> <a05111b01b9b9ea46ac33@[192.168.0.2]> <3.0.5.32.20020927103653.01026638@mail.sage-one.net> <3.0.5.32.20020927113644.01026638@mail.sage-one.net>
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>I have several SmartUPS (APC 1500s) that run the most critical machines and >dictate to the slaves. I believe the SmartUPS can be programmed to wait before they start to supply power. If I read the apcupsd docs correctly you can check you settings with "apcaccess eeprom". It should return the UPS settings like this: > Config Current Permitted >Description Directive Value Values >=================================================================== >Upper transfer voltage HITRANSFER 253 253 264 271 280 >Lower transfer voltage LOTRANSFER 196 196 188 208 204 >Return treshold RETURNCHARGE 0 00 15 50 90 >Output voltage on batts OUTPUTVOLTS 230 230 240 220 225 >Sensitivity SENSITIVITY H H M L L >Low battery warning LOWBATT 2 02 05 07 10 >Shutdown grace delay SLEEP 20 020 180 300 600 >Alarm delay BEEPSTATE 0 0 T L N >Wakeup delay WAKEUP 0 000 060 180 300 >Self test interval SELFTEST 336 336 168 ON OFF You can set the 'Return treshold' to 15% or the 'Wakeup delay' to 180 seconds to avoid the problem you described. >The slaves have dumb UPS, so nothing is cut 'n >dried. I don't even know why they send a serial cable with the dumb UPses. >I've watched folks waste days trying to make the dumbies communicate just >because they got the cable with the new unit. You can't really communicate with the dumb UPSes. They use the serial port status lines (RTS, CTS, DCD, DTR etc) to signal the basic status: OnLine, OnBattery, BatteryLow etc. You can also signal the UPS to shut down via the control lines. NUT can use this kind of communication with the genericups driver. -- Cheers, Petri Metis / Petri Riihikallio GSM: +358 400 505 939 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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