Advantech AIMB-763 - Page 44

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