Nut upsuser - Jul 2009 - How to connect Trust UPS Energy Protector 400VA with nut

Hello list,

I have been trying to figure out the whole day how I can connect our old
Trust UPS Energy Protector 400VA with nut. But I have not made any
progress yet and the worst is: I have no idea where to start although I read
the documentation and search the web.

My first problem is how to find out which driver I should take because
this UPS is not in the compatibility list. The second issue is that it 
seems to
be that every UPS has either a serial or a usb connection in order to 
communicate
to the PC - but our old UPS has none. There are only power plug ins - and
that is it.

As far as I understand that UPS stuff - and I have not already told you
that I am newbie with UPS ;-) it is some kind of contact closure device.
It using the power connection to tell the PC if the power is low. So that
means I should try the genericups driver if I understand right. But this 
driver
also want a configured port - which one because I haven't any serial 
connection -
and a upstype. But no one does fit. I also took a look into the description
for the powercom and the megatec drivers - also in the source code.

But I as I said - this does not bring me further. O.K: in the man page 
for the
the genericups driver is described how you can test if the UPS can be 
control
with nut. But - and this is my question - has never ever anybody used 
this UPS
with nut? I not it is cheap UPS, it is old, etc. - but we have it and 
now we have
a Linux which should use it. So if somebody has read that far and has 
maybe an
advice for me is appreciated. Thanks for reading.

-- 


Mit freundlichen Gr??en
Kind Regards

Peter Werner

-------------------------------------- 
 
Steinhart Medizinsysteme GmbH  
Grubstra?e 6-8  
D-79279 V?rstetten  
 
Tel.: +49(0)7666-90070  
Fax.: +49(0)7666-900711  
http://www.hipax.de

Gesch?ftsf?hrer: Thomas Wittmer und Dr. Martina Steinhart
Handelsregister B Freiburg i.Brsg. HRB 261362
VAT DE813672991
--------------------------------------

Citeren Peter Werner <p.werner op hipax.de>:
> I have been trying to figure out the whole day how I can connect our old
> Trust UPS Energy Protector 400VA with nut. But I have not made any
> progress yet and the worst is: I have no idea where to start although I
read
> the documentation and search the web.
>
> My first problem is how to find out which driver I should take because
> this UPS is not in the compatibility list. The second issue is that  
> it seems to
> be that every UPS has either a serial or a usb connection in order  
> to communicate
> to the PC - but our old UPS has none. There are only power plug ins - and
> that is it.
In that case, you can't monitor it. It isn't possible, because the  
maker of this device didn't provide an interface for monitoring.  
You'll only find this limitation on the rock bottom low priced devices  
and yours presumably is.
> As far as I understand that UPS stuff - and I have not already told you
> that I am newbie with UPS ;-) it is some kind of contact closure device.
Even those devices will be equipped with a monitoring port and  
generally, this will be a DB-9 connector that connects to a RS-232  
port (sometimes via a specially wired cable). But if there is not  
port, you're out of luck.
> It using the power connection to tell the PC if the power is low.
There are plans to do this (powerline communication) but as far as I  
know, there is no manufacturer of PC power supplies that supports  
this. It is a great idea, that would do away with a lot of headaches  
for signaling the power state, but so far this has never gone beyond  
great ideas. In any case, NUT can't help you with this.
> So that
> means I should try the genericups driver if I understand right.
Not at all. Even that one needs a serial port (I'm quite sure that is  
written somewhere in the documentation as well, but you seem to have  
missed that).

Best regards, Arjen
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