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14. COM2 ports (6-pin COM2RS, 6-pin COM2RS3 and 6-pin COM2RS4)
These three 6-pin connectors allow you to configure COM2 to either RS232
(default value), RS422 or RS485.
COM3 and COM4 only support RS232.
AIMB-763
COM2RS3
DDCD2#
1
COM2X1
3
TXD485-
5
COM2RS4
TTXD2
1
COM2X3
3
RXD485+
5
COM2RS
1
3
RXD2
5
RS232 RS422 RS485
1-3
COM2RS3
2-4
1-3
COM2RS4
2-4
COM2RS
5-6
2
RRXD2
4
COM2X2
6
TXD485+
2
DDCD2#
4
COM2X4
6
RXD485-
2
RXD485
4
RXD422
6
RXD232
3-5
3-5
4-6
4-6
3-5
3-5
4-6
4-6
3-4
1-2
1-33
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