Hardware pinouts information and cables schemes

APC Smart UPS interface port pinout

connector wiring scheme

bookmark this page

may be used for building your own cable



PinSignalDescription
1Shut Down (dumb mode) / RS-232 RX In (smart mode)Set high for 1-5 sec to activate shutdown.
2Line Fail (dumb mode) / RS-232 TX Out (smart mode)On-battery power (normally low but goes high when the UPS switches to batteries)
3Line Fail signalMains down (normally low but goes high when line fail)
4,9GNDGround, chassis
5Low battery signal (normally low but goes high when low battery)
6Line fail signalInverse of pin 2 Line Fail signal
7UPS Turn-on/off signal(on advanced UPSes only)
8Unregulated +24 Vdc Out ?? 

´set high´ means ´short to GND´?


This information should be correct, but may be not. Please, help us to improve this document!
Is this document CORRECT or INCORRECT? Your opinion will be used to establish document status (showed at the bottom).
Related Links:
Pinouts.ru > Some peripheral devices pinouts >  Pinout of APC Smart UPS interface port and layout of 9 pin D-SUB male connector
Document status: unknown
Source(s) of this and additional information: UPS FAQ in russian 0 reports
Last updated at Thu Jan 10 2008. Submit additions or corrections for this document. Is this document correct or incorrect? What is your opinion?
[Discuss at the forum] [Back to index] [SUBMIT new pinout]
This page contain parts under Copyright © 2000-2007 by pinouts.ru team.
No any portion of this webpage may be reproduced in any form without visible direct link to this page provided. Webmaster permission required in any other cases.
Efforts have been made to ensure this page is correct, but it is the responsibility of the user to verify the data is correct for their application.
16702 hits since March 4, 2005