*BSD News Article 33977


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From: kodela@netcom.com (Sridhar Kodela)
Subject: Re: APC UPS owners or potential buyers, trying to show user base
Message-ID: <kodelaCtwvw4.BC8@netcom.com>
Followup-To: comp.os.linux.development,comp.unix.bsd
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References: <316bjc$hlh@thor.tjhsst.edu> <317k55$kq3@news.halcyon.com> <JOHNSONM.94Jul28233853@calypso-2.oit.unc.edu> <CtpoIA.JJH@newsserver.aggregate.com> <1994Aug01.213803.22942@unisup1.mpd.co.za>
Date: Tue, 2 Aug 1994 14:21:40 GMT
Lines: 51


: Ahem.. Well. umm.. the Smart-ups cable is just a 3 wire cable with pins
: 2 4 and 7 (I think ... could be wrong).  The PC doesn't communicate
: with the UPS - only the UPS sends data to the PC (thus no receive
: pin on the UPS) and a pin for power-fail detection, and a ground :-)

Hi aris,
	there is another breed of programs mainly SNMP agents that talk to
the UPS. They can receive the messages sent by the UPS (we call them 
unsolicited messages or alarms.) as well as sending commands to the UPS. These 
commands are mainly to get the data out and some control commands.

	On the UPS i am writing the SNMP agent for the RS-232 pin connection
is given like this. 

Quote start:
			RS-232 Mode
RS-232 pin connections are as follows:

	pin1 	receive data
	pin2 	Transmit data
	pin9 	signal groud

Quote end:

	As far as detecting the power failure it sends a special character
on to the com port. The agent reads this and figures out. There are bunch of
characters which have special meaning. 

	I beleive the cable is a modified DB9-DB9. A straight DB9 won't work.
We rigged it up to their req. 

cheers
sridhar
kodela@netcom.com
sorry for any typos
: >	The UNIXware software is SCO version too, I don't think they have
: >	a specific version for any other OS.

: They have for DOS/NT/Netware too.  I believe they also have for some of
: the larger UNIXes i.e. HP/UX and AIX.   I don't see why you couldn't
: use the SCO version on Linux if you were using the iBCS2 code which
: allows you to run SCO (COFF) binaries.

: Aris

: -- 
: Aris Stathakis            Tel: +27 11 887 1040       Snail Mail:  
: SCO ACE / Novell CNE      Fax: +27 11 887 5158       P.O. Box 781228
: M&PD (Pty) Ltd.           Fax: +27 11 887 5158       Sandton, 2146
: E-Mail: aris@mpd.co.za    Cell:+27 83 601 0206       R.S.A.