APC SU1400XLT User Manual download pdf (Page 81)

following diagram is correct.

This diagram is for informational purposes and may not be complete. We don't recommend that use it to

build you build one yourself.

APC Part# - 940-0023A

Signal Computer UPS

DB9F DB9M

DCD 1 -------------------- 2 On Battery

3.3K ohm

TxD 3 --[####]-*

DTR 4 ---------*

GND 5 ---------------*---- 4 Ground

*---- 9 Common

940-0024C Cable Wiring

Supported

Models:

SmartUPS (all models with DB9 serial port)

If you wish to build the standard cable furnished by APC (940-0024C), use the following diagram.

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 --*

940-0095A Cable Wiring

Supported

Models:

APC BackUPS Pro PNP

Contributed

by:

Chris Hanson cph at zurich.ai.mit.edu

This is the definitive wiring diagram for the 940-0095A cable submitted by Chris Hanson, who

disassembled the original cable, destroying it in the process. He then built one from his diagram and it

works perfectly.

APC Part# - 940-0095A

UPS end Computer end

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APC SU1400XLT User Manual Page 81