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.
COM2RS3
1
2
DDCD2#
RRXD2
COM2RS4
1
2
TTXD2
DDCD2#
COM2RS
2
1
RXD485
4-6
4-6
COM3 and COM4 only support RS232.
EAX-945G / EAX-945G2
1-33
RS232 RS422 RS485
COM2RS3
1-3
2-4
3-5
4-6
3-5
COM2RS4
1-3
2-4
3-5
4-6
3-5
COM2RS
5-6
3-4
1-2
RXD2
3
4
RXD422
5
6
RXD232
COM2X3
3
4
COM2X4
5
6
RXD485-
COM2X1
3
4
COM2X2
TXD485-
5
6