Model SUA750I. PCB rev 1.9 2003
SMART-CUSTOM CABLE
Signal Computer UPScv
DB9F DB9M
RxD 2 -------------------- 2 TxD Send
TxD 3 -------------------- 1 RxD Receive
GND 5 -------------------- 9 Ground
APC Part# - 940-0024C
Signal Computer UPS
DB9F DB9M
RxD 2 -------------------- 2 TxD Send
TxD 3 -------------------- 1 RxD Receive
DCD 1 --*
|
DTR 4 --*
GND 5 -------------------- 9 Ground
RTS 7 --*
|
CTS 8 --*
Upon sending a ^Z, your UPS will probably spit back approximately 254 characters something like the following (truncated here for the example):
#uD43132135138129uM43229234239224uA43110112114108 ....
It looks bizarre and ugly, but is easily parsed. The # is some kind of marker/ident character. Skip it. The rest fits this form:
Command character - use this to select the value
Locale - use 'b' to find out what yours is (the last character), '4' applies to all
Number of choices - '4' means there are 4 possibilities coming up
Choice length - '3' means they are all 3 chars long
Then it's followed by the choices, and it starts over.
Matrix-UPS models have ## between each grouping for some reason.
Here is an example broken out to be more readable:
CMD DFO RSP FSZ FVL
u D 4 3 127 130 133 136
u M 4 3 229 234 239 224
u A 4 3 108 110 112 114
u I 4 3 253 257 261 265
l D 4 3 106 103 100 097
l M 4 3 177 172 168 182
l A 4 3 092 090 088 086
l I 4 3 208 204 200 196
e 4 4 2 00 15 50 90
o D 1 3 115
o J 1 3 100
o I 1 3 230 240 220 225
o M 1 3 208
s 4 4 1 H M L L
q 4 4 2 02 05 07 10
p 4 4 3 020 180 300 600
k 4 4 1 0 T L N
r 4 4 3 000 060 180 300
E 4 4 3 336 168 ON OFF
CMD == UPSlink Command.
u = upper transfer voltage
l = lower transfer voltage
e = return threshold
o = output voltage
s = sensitivity
p = shutdown grace delay
q = low battery warning
k = alarm delay
r = wakeup delay
E = self test interval
DFO == (4)-all-countries (D)omestic (I)nternational (A)sia (J)apan
(M) North America - servers.
RSP == Total number possible answers returned by a given CMD.
FSZ == Max. number of field positions to be filled.
FVL == Values that are returned and legal.
http://www.apcupsd.com/manual/