Hardware reference guide

CPU Modules
35013379 02 October 2007 199
Modbus Ports
Pinout
Connections for
Portable
Computers
The following figure shows the Modbus port pinout connections for 9-pin portable
(laptop) computers.
The following is the abbreviation key for the above figures.
TX: Transmitted Data DTR: Data Terminal Ready
RX: Received Data CTS: Clear to Send
RTS: Request to Send NC: No Connection
DSR: Data Set Ready CD: Carrier Detect
CD
RX
TX
DTR
GRND
DSR
RTS
CTS CTS
RTS
DSR
GRND
DTR
TX
RX
SHIELD
IBM-AT
9-Pin Female
Quantum
9-Pin Male
NC NC
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com