Date: Thu, 6 Jul 1995 12:28:30 -0400 From: "Philip T. Hoeffer" <pth3k@avery.med.virginia.edu> To: jkh@violet.berkeley.edu Subject: APC UPS INFORMATION you Requested Message-ID: <199507061628.MAA60410@avery.med.Virginia.EDU> Resent-Message-ID: <25841.805056012@freefall.cdrom.com>
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APC Smart UPS Commands / Protocol
---------------------------------
Interface:
----------
The SPC Ups's use a simple three wire interface with a shield.
When in Smart Mode!!!
CPU UPS
--- ---
TxD 2 --------------------- 2 RxD
RxD 3 --------------------- 1 TxD
GND 5 --------------------- 9 GND
Shield ----------------- Shield
Communication Parameters
------------------------
2400 Baud, 8 Data Bits, 1 Stop Bit, No Parity ( Standard Stuff Here )
Init Ups ( Smart Mode )
-----------------------
To Start the UPS Responding to Smart UPS Commands send the
character "Y", 0x59, ( A capital y ).
The UPS will respond with the character string "SM" which means
I assume Smart Mode. --
From this point on the UPS will respond to the commands below.
General Commands
----------------
Command Description Command Description
--------------------------------+-----------------------------------------
A = Test Front Panel | L = Input Line Voltage "xxx.x"
B = Battery Voltage "xx.x" | M = Max. Line Voltage Rcvd. "xxx.x"
C = Battery Voltage "xx.x" ?| N = Min. Line Voltage Rcvd. "xxx.x"
D = N / A | O = Output Voltage "xxx.x"
E = ?? Generates "OK" | P = Power Load on UPS in % "xx.x"
F = Line Frequency Hz "xx.x"| Q = ?? generates "08" on mine
G = generates "R","T" or "S"| R = N / A
H = N / A | S = N / A
I = N / A | T = generates "000.1" TIME??
J = N / A | U = Self Test gen. "OK<CR>!!S"
K = Shutdown UPS | V = Version Req. "6KD" on mine
Send a "K", wait 1 sec, | W = Self Test
Send another "K", wait | X = Generates "OK"
another sec. then send a | Y = Init UPS as Smart Mode
<CR>. <CR> = 0x0d | Z = N / A
After 15-30 Secs UPS will |
Shutdown. |
--------------------------------+-----------------------------------------
Return Codes
------------
The Following is a list of characters generated by the UPS & what
I did to get them:
"SM" Received after sending a "Y", SMART MODE ???
"6KD" UPS Version Number.
"!" Unplug ac line cord from UPS. Also rcvd when cord plugged
back in. call it LINE TRANSITION OCCURED.
"?" Send from UPS after powered up by 1 switch on front panel.
"*" Sent by UPS after second "K" sent by me. WARNING ABOUT TO
SHUTDOWN??
"R" -\
"S" > Sent by UPS after I sent it the "G" command. ???
"T" -/
=================================================================
This is what I have so far. I am still going to work on this but
if any of you findout anything further please let me know or post
it on the net.
I hope this helps someone out there. Remember you saw it from
a FreeBSD'er First!!!
Best of luck
Ty
=====================================================================
Ty Hoeffer pth3k@galen.med.virginia.edu | University of Virginia
Telecommunications Support Network Analyst | Hospital
Lan Support Group / Unix Systems | Medical Center Computing
-------------------------------------------+-------------------------
FreeBSD the Operating System of choice for PC UNIX!!!
Opinions Expressed by Me are not shared by anyone!!!! *<;)
=====================================================================
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