[Nut-upsuser] Control power output via serial connection

Manuel Wolfshant wolfy at nobugconsulting.ro
Sun Nov 18 21:05:29 UTC 2012

On 11/18/2012 04:42 PM, Michal Soltys wrote:
> On 2012-11-18 13:10, Tero Mäntyvaara wrote:
>> Hi,
>> I have two APC UPS models and I am trying to find out if it is possible
>> to cut power down via serial connection in Ubuntu Server 12.04.1 AMD64
>> system.
>> I have models:
>>      APC Back-UPS Pro 650 (BP650SI)
>>      APC Back-UPS 650 (BK650MI)
> IIRC, back-ups series only work in "dumb" mode - but I'm not 100% 
> sure. They should work either with usbhid-ups or genericups drivers 
> (depending if they have usb port or not), but I have no first hand 
> experience with them.
>> I have also APC serial cables 940-0020C and 940-0095B.
> Both cables are for simple signalling, they differ in details though 
> (I persume one is from BP650SI, the other BK650MI).
>> Is this possible with my current hardware? If it isn't possible, could
>> you recommend model(s) on which has this feature?

None of the lower end APC models can control the outputs individually. 
The UPS that I have and I am happy with and mostly fits your requirement 
is MGE Pulsar Evolution ( 
http://www.shopping.com/MGE-UPS-Pulsar-Evolution-1500-66231/info ). It 
works absolutely beautifully despite its age ( I have already replaced 
its batteries 3 times ). However I am not sure that it fits your bill ( 
and you will have to verify the specs ) because I prefer to control / 
monitor it over the network.

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