[OmniOS-discuss] UPS serial non-standard, WHY?

Michael Mounteney gate03 at landcroft.co.uk
Fri Dec 5 01:08:42 UTC 2014


OK, not an OmniOS matter but as a lot of people here will be using
UPSs, I hope it's alright.

I made what is apparently the common but incorrect assumption that the
serial monitoring port on the back of my APC 700 UPS had a standard
serial pinout but for some reason the TxD and RxD are swapped.  Is this
just some random brain-&*^# on the part of an android within APC, or is
there some actual reason for it?

Don't plug a standard serial cable into the UPS:  it instantly powers
off.  No fooling.

This is the first step in getting UPS software monitoring in place.  I
presume that the software of choice is NUT?  I can't find it in a
repo so I suppose it's a build-it-yourself job.

Michael.


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