[Nut-upsuser] Gamatronic UPS using nut 2.0.3

Peter Selinger selinger at mathstat.dal.ca
Mon May 1 23:08:14 UTC 2006

Criggie wrote:
> Charles Lepple wrote:
> > On 5/1/06, Shlomo Dubrowin <shlomo at dubrowin.org> wrote:
> >> Does anyone know why, or how to check why,  it is showing OB, when it
> >> should be showing OL?
> >
> > I am not familiar with the various genericups types, but you can use
> > statserial to show the status of the various serial port lines.
> Hi Charles - what does it suggest if statserial shows no change when the
> UPS switches to battery?
> Serial plugged in.... statserial /dev/ttyS0 -d
> 16742
> Unplugged returns 16390   Which shows I have the right serial port because
> unplugging the serial cable shows changes.

This could mean several things. 

* perhaps your UPS does not report "on battery". Does it report "low
  battery"? The latter is all that is technically needed to shut down
  the computer. 
* perhaps your UPS or cable is broken, or partially broken
* perhaps your UPS is not contact-closure. Maybe it expects proper
  serial port communications, instead of setting individual pins?
  In this case, you should use one of the serial drivers. 

-- Peter

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