[Nut-upsuser] Microdowell (cpsups) driver segfault

Doug Parsons doparsons at earthlink.net
Wed Jun 20 20:57:52 UTC 2007

As for the voltage level there is also the possibility that if you are in an
industrial/commercial setting you are getting power from a 3 phase panel and
thus are on a 208 volt circuit. With three phase power each leg will measure
120V to ground or neutral but phase to phase is 208V.


-----Original Message-----
From: nut-upsuser-bounces+doparsons=earthlink.net at lists.alioth.debian.org
[mailto:nut-upsuser-bounces+doparsons=earthlink.net at lists.alioth.debian.org]
On Behalf Of Doug Reynolds
Sent: Wednesday, June 20, 2007 4:35 PM
To: varain at flashmail.com
Cc: Arjen de Korte; nut-upsuser at lists.alioth.debian.org
Subject: Re: [Nut-upsuser] Microdowell (cpsups) driver segfault

varain at flashmail.com wrote:
> Hello Arjen,
> Wednesday, June 20, 2007, 9:59:34 AM, you wrote:
>>>> As an experiment, if I compile just the driver from 2.2.0-pre1 (with
>>>> required options), can I expect it to work ? (assuming the problem was
>>>> solved in this version)
>>> Assuming you're coming from version 2.0.5, this will work. It won't be
>>> compatible with earlier versions, since we changed the naming of the
>>> driver sockets. I don't see the advantage of just compiling a driver
>>> though. You'd need to setup the build environment anyway, so you might
>>> just as well compile the rest of the package too.
>> I was referring to the powerpanel driver here. Don't expect the cpsups
>> driver to be fixed (ever). Nobody has cared for it in the past two years
>> and we have a more generic driver now, that will deal with all Cyber
>> UPSes (text and binary protocol). We will probably drop the cpsups driver
>> from the tree by the time we release nut-2.2.0.
>> Best regards, Arjen
> The powerpanel driver starts like this:
> Network UPS Tools - UPS driver controller 2.0.5
> Network UPS Tools -  CyberPower text protocol UPS driver 0.12 (2.0.5)
> Warning: This is an experimental driver.
> Some features may not function correctly.
> warning: sent "\r", expected "#2\r" but got ""
That is somewhat normal.  Some cyber power systems return the #2, and some

> Detected CYBER POWER 1000VA on /dev/ttyS0
> after this it seems to work ok, even if it the numbers reported for input
voltage look a little low.
> (205 to 211 in a country where nominal voltage is supposed to be 230).
Maybe it's just lousy power.(I have no easy way to verify)

those numbers come directly from the ups itself.  My cyberpower unit
displays the correct voltage (I am in the US, we have 120V line power);
however, there are probably different versions of the firmware that might
not have the correct voltage readings (or your power fluctuates a lot)..  

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