[Nut-upsdev] Specs for Powercom Kingpro UPSes!

Arjen de Korte nut+devel at de-korte.org
Sun Dec 24 14:20:54 CET 2006

Dan Mahoney, System Admin wrote:

> I found a pinout of powercom's Kingpro UPSes in their manual.
> http://www.powercom-ups.com/manuals/kingpro.pdf
> Page 11.

Good! Looking at this page, this UPS may be supported already by the
(dumb) genericups driver. This won't give you all the bells-and-whistles
the UPS has, but will provide the basic function of monitoring and
shutting down when the battery is nearly empty. Unfortunately the manual
doesn't list the pins on the serial connector to the PC, otherwise I
might have been able to give you the correct driver parameters right away.

A good start would probably be 'upstype=15'. The contacts on battery-
and line-state are normally open, so you'd expect the corresponding
RS-232 lines to be logic '0' when online/battery good and logic '1' when
onbattery/battery low. The level of the UPS shutdown signal is high
(logic '0') which equals a break signal, so I would expect that this pin
is already wired correctly since it is also used in smart mode.

Genericups expects the cable power, online and battery low signals on
DTR, CTS and DCD respectively, so you may need to override these if they
are different on the cable provided. See 'man genericups' for more details.

> Unfortunately, this doesn't give PROTOCOL details.  Does anyone have a
> "first step" at how to decode that?  (for example, how to gauge line
> speed, how to "snoop" the serial port under windows? (for which the only
> software exists right now).

Assuming that the existing Powercom driver doesn't work with your UPS,
we have a protocol description from Powercom (it was posted recently
here). You could also check if modifying the driver to this description
makes it work.

Best regards, Arjen

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