Charles Lepple wrote, On 9/19/2013 7:49 PM:
On Sep 19, 2013, at 12:11 PM, Paul O'Rorke wrote:
So where does this leave things regards Eaton and shut down? Has anyone
managed graceful shut down from an Eaton unit with either of the ushhid or
bcmxcp drivers?
Generally speaking, the UPS will signal when it reaches a low battery state, regardless of whether
the UPS publishes runtime statistics, battery percentages, or any other such values. The real
difference between a "smart" and "dumb" UPS is not just the protocol, but how
advanced the battery monitoring and charging circuitry is.
I have an old MGE UPS that uses the usbhid-ups driver, and I have no problems shutting
down the system via the LB signal in NUT. The non-Powerware-based Eaton units can be
considered "descendants" of this hardware, from what I understand, and provide
similar variables.
I was able to change battery.charge.low to 50 (*) on an Evolution 850. I
tested that the setting took, even if the UPS was rebooted. Because it's
powering Win2k3, I changed the offdelay to 600 and the ondelay to 615. I
then disabled the beeper. It all works, so I'm pretty happy with the
driver capability with this UPS. Driver: usbhid-ups.
(*) You don't have to neccessarily use a timeout script to keep from
draining the battery.
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