Schneider Automation Modicon Quantum Ethernet User's Guide Page 172

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CPU Modules
172
35013379 02 October 2007
Modbus Ports
Pinout
Connections
The following figure shows the Modbus port pinout connections for 9-pin and 25-pin
connections.
5
IBM-AT
9-Pin Female
Quantum
9-Pin Male
Quantum
9-Pin Male
IBM-XT
25-Pin Female
CD
RX
TX
DTR
GRND
DSR
RTS
CTS
1
2
3
4
5
6
7
8
1
2
3
4
6
7
8
9
SHIELD
RX
TX
DTR
GRND 5
DSR
RTS
CTS
NC
1
2
3
4
6
7
8
9
SHIELD
RX
TX
DTR
GRND
DSR
RTS
CTS
NC
RX
RTS
CTS
DSR
GRND
NC
1
2
3
4
5
6
7
8
SHIELD
TX
20DTR
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com
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