20
COM3_1
:
RS232 / RS422 / RS485 Connector
Connector Type: 2X5 10-pin box header, 2.54mm pitch
COM4_1
:
RS232 / RS422 / RS485 Connector
Connector Type: 2X5 10-pin box header, 2.54mm pitch
Chapter 2: Switches and Connectors
Rugged E3 l User’s Manual
COM3_1
Pin
RS232 Definition
RS422 / 485 Full
Duplex Definition
RS485 Half Duplex
Definition
1
DCD3
TX3-
DATA3-
2
RxD3
TX3+
DATA3+
3
TxD3
RX3+
4
DTR3
RX3-
5
GND
6
DSR3
7
RTS3
8
CTS3
9
RI3
COM4_1
Pin
RS232 Definition
RS422 / 485 Full
Duplex Definition
RS485 Half Duplex
Definition
1
DCD4
TX4-
DATA4-
2
RxD4
TX4+
DATA4+
3
TxD4
RX4+
4
DTR4
RX4-
5
GND
6
DSR4
7
RTS4
8
CTS4
9
RI4