Db9 Connectors - Pepperl+Fuchs ICDM-RX/TCP-DB9/RJ45-PM Installation And Configuration Manual

ICDM-RX/TCP Installation and Configuration Guide

DB9 Connectors

7.1. DB9 Connectors
This subsection provides the following information:
• Connector pin assignments (below)
• DB9 Null-Modem Cables (RS-232) on Page 78
• DB9 Null-Modem Cables (RS-422) on Page 78
• DB9 Straight-Through Cables (RS-232/485) on Page 78
• DB9 Loopback Plugs on Page 79
• Connecting DB9 Serial Devices on Page 79
Pin
1 DCD
2 RxD
3 TxD
4 DTR
5 Signal GND
6 DSR
7 RTS
8 CTS
9 RI
† DIN rail models support RS-485 full-duplex.
Refer to the hardware manufacturer's installation documentation if you need help with connector pin outs or
cabling for the serial device. This illustrates the DB9 connector signals.
RS-232
SIG GND
DTR
TxD
RxD
CD
Pin 1
DB9 Male
DB9 Connector Pin Outs
RS-422 and RS-485 Full-Duplex
RS-232
(Master/Slave)†
Not used
RxD-
TxD-
Not used
Signal GND
Not used
TxD+
RxD+
Not used
RS-422
SIG GND
RI
Not used
CTS
TxD-
RTS
RxD-
DSR
Not used
Pin 6
Pin 1
DB9 Male
Half-Duplex
Not used
Not used
TRxD-
Not used
Signal GND
Not used
TRxD+
Not used
Not Used
RS-485
SIG GND
Not used
Not used
RxD+
TRxD-
TxD+
Not used
Not used
Not used
Pin 6
Pin 1
DB9 Male
RS-485
Not used
Not used
TRxD+
Not used
Pin 6
77