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 RS-422 TX+ or RS-485 Tx+/Rx+
2 RS-232 RxD
3 RS-232 TxD
4 RS-422 RX+
5 GND GND
6 RS-422 TX- or RS-485 Tx-/Rx-
7 RS-232 RTS
8 RS-232 CTS
9 RS-422 RX-
The connector supports up to two independent serial communication channels and can be configured
for RS-232 and RS-422 or RS-485.
COM-C
Serial port pin assignment
Pin COM
1 GND
2 RS-485 Tx+/Rx+
3 RS-485 Tx-/Rx-
HMI Panel Drawings
Beijer Electronics, MAEN330 19 2023-09
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