APC UPS control system Power Supply User Manual


 
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From Jan Babinski jbabinsk at pulsarbeacon dot com: (many thanks)
The BackUPS XS1000(BX-1000) ships with the 940-0127B usb cable and
the optional 940-0128D serial cable. I’m trying to get it running under
OpenBSD so usb is out of the question. I’ve tried smart serial with the
custom cable, but that’s not working, so I’m stuck with dumb serial over
940-0128D.
I have noticed that this cable is not supported by apcupsd so I set out
to find out how much different this cable is compared with the supported
ones. After tearing the cable apart (see schematic below) I noticed that it is
functionally similar to the 940-0128A cable except for NC on (6) DTR and
(2) RD on the computer side.
Cable 940-0128D
DB9(Computer) RJ45-10(UPS)
(5) (1) ____________
( o o o o o ) [ oooooooooo ]
\ o o o o / [____________]
(9) (6) (10) [_] (1)
RI(9)<---+
|
CTS(8)<---+--- E 2N2222(NPN)
\|___
____ /| B |
| C |
| |
+---vvvv---+--[>|------<(2)OnBatt
RTS(7)>---| 2k 1N5819
+---vvvv---+--[>|------<(3)LowBatt
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+--- C |
\|___|
/| B
DCD(1)<------- E 2N2222(NPN)
DTR(4)>-------------------------->(8)KillPwr
GND(5)----------------------------(7)Signal GND
150