Operator Panel Drawings
COM-A
Serial port pin assignment
Pin
COM 1
COM 2
COM 3
1
RS422 TX+ or
RS485 Tx+/Rx+
2
RS232 RxD
3
RS232 TxD
4
RS422 RX+
RS485 Tx+/Rx+
5
GND
GND
GND
6
RS422 TX- or
RS485 Tx-/Rx-
7
RS232 RTS
8
RS232 CTS
9
RS422 RX-
RS485 Tx+/Rx-
The connector supports up to three independent serial communication channels and
can be configured for RS-232 and RS-422 or 2×RS-485.
COM-B
Serial port pin assignment
Pin
COM 4
COM 5
1
RS422 TX+ or
RS485 Tx+/Rx+
2
RS232 RxD
3
RS232 TxD
4
RS422 RX+
5
GND
GND
6
RS422 TX- or
RS485 Tx-/Rx-
7
RS232 RTS
8
RS232 CTS
9
RS422 RX-
The connector supports up to two independent serial communication channels and can
be configured for RS-232 and RS-422 or RS-485.
Beijer Electronics, MAEN332
16
