Nut upsuser - Jul 2008 - Genericups type 22 with Cyberpower CP485SL/AE485

Hi,

I'm new to this list and I have a question concerning using the genericups
driver
(type 22) with the Cyberpower 485 in serial mode.

When running the driver in debug mode:

      genericups -a myupsname_genericups22 -DDDDDD

I observe the following statuses as the mains power dies, switching over to
battery
power, and then letting it discharge.

Initially, with mains power on, status = OL.

When mains power goes off, and we run on battery, status = OB.

When battery level drops sufficiently the UPS starts beeping, and status = OB
OL.

Shortly before battery dies the UPS beeps more frequently, status = OB OL.

Battery dies, then status = OB, and then changes to OL.

When power is restored, status toggles from OB to OL to OB to OL a few times and
then stays at OL.

I assume that at the point we get OB OL this is the place we would be shutting
down
the computer?

Why when the battery is discharged do we see the status OL? Is this just a
limitation
of using the genericups driver instead of one that is more appropriate for my
UPS?

I did try using the powerpanel driver but that timed out and did not find the
UPS.

Genericups type 7 seems to work the same as type 22.

Is the genericups driver one that simply monitors the CTS, DTR etc. signals? If
so
should I care about these signals polarities, or does what I am already seeing 
indicate that everything is working as well as I can expect (that is without
having a
driver exactly for my UPS)?

Thanks,
Chris

 -- 
chris at gatcombe.com
www.gatcombe.com

> I'm new to this list and I have a question concerning using the
genericups
> driver
> (type 22) with the Cyberpower 485 in serial mode.
>
> When running the driver in debug mode:
>
>       genericups -a myupsname_genericups22 -DDDDDD
>
> I observe the following statuses as the mains power dies, switching over
> to battery
> power, and then letting it discharge.
>
> Initially, with mains power on, status = OL.
>
> When mains power goes off, and we run on battery, status = OB.
>
> When battery level drops sufficiently the UPS starts beeping, and status
> OB OL.
>
> Shortly before battery dies the UPS beeps more frequently, status = OB OL.
This is all what we expect.
> Battery dies, then status = OB, and then changes to OL.
Could be the circuit that is controlling looses power. Since this UPS uses
'contact' closure signalling, there always will be a status (even if the
UPS is not actively controlling the modem control lines).
> When power is restored, status toggles from OB to OL to OB to OL a few
> times and
> then stays at OL.
Possibly some kind of internal test, nothing to be worried about.
> I assume that at the point we get OB OL this is the place we would be
> shutting down
> the computer?
See the FAQ.
> Why when the battery is discharged do we see the status OL? Is this just a
> limitation
> of using the genericups driver instead of one that is more appropriate for
> my UPS?
See above. Nothing to be worried about. After the UPS signals OB LB and
the server picks this up, this state will be latched and there is no way
back.
> I did try using the powerpanel driver but that timed out and did not find
> the UPS.
Apparently, your UPS only supports 'contact closure' signalling or the
cable used doesn't have the necessary wires for smart signalling.
> Genericups type 7 seems to work the same as type 22.
If you look in the manual page for the genericups driver, you'll find the
signalling is identical. Adding type 22 was a mistake (since it isn't
different from type 7), but since it has been like that for a couple of
releases, we can't correct this without breaking things.
> Is the genericups driver one that simply monitors the CTS, DTR etc.
> signals? If so
> should I care about these signals polarities, or does what I am already
> seeing
> indicate that everything is working as well as I can expect (that is
> without having a
> driver exactly for my UPS)?
Spot on. Everything is fine and dandy.

Best regards, Arjen
-- 
Eindhoven - The Netherlands
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