[plug] UPS & powerd

[Garth Atkinson]

Hi Brian

The blurb from tech support means that the Liebert does not use a
standard serial cable to communicate with a PC. You might be out of
luck getting this to work with a PC serial port. Do Liebert sell
special UPS serial cards?


Brian Tombleson wrote:
> 
> Hi List,
> 
> I've read the UPS-HOW and all the doco with powerd (powerd-2.0-1.i386.rpm)
> for a "Liebert PowerSure" UPS I'm trying to get communicating with RedHat
> 6.2.
> 
> I've had a mail form their tech support saying essentially:
> 
> "pins 1 and 7 are low battery - pins 8 and 9 are on battery
> When the UPS goes on battery a relay closes and pins 8 and 9 are shorted
> together.
> When UPS battery is low, pins 1 and 7 short together. So, you need to
> monitor pins 8
> and 9 for a closed circuit. "
> 
> What I can't work out is how this information relates to powerd's config.
> 
> My current config :
> 
> delay 2
> serialline /dev/ttyS0
> monitor CTS
> failwhen high
> pollingstep 2
> asserthigh DTR
> 
> For some reason the daemon fails when I try turning on debug and I've tried
> specifying a logfile but nothing is ever written to it.
> 
> Anyone had any experience with this?
> 
> Any help would be greatly appreciated.
> 
> Regards,
> Brian Tombleson