Hardware reference guide

CPU Modules
35013379 02 October 2007 187
Modbus Ports
Pinout
Connections for
Portable
Computers
The following figure shows the Modbus port pinout connections for 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