Appendix D Pin Assignments
175
COM2
Table D-20: COM2
Pin Signal
RS-232 RS-422 RS-485
1 DCD TX- DATA-
2 RX TX+ DATA+
3 TX RX+ ---
4 DTR RX- ---
5 GND GND ---
6 DSR --- ---
7 RTS --- ---
8 CTS --- ---
9 RI --- ---
1
5
9
6
66
66
6
77
77
7
88
88
8
99
99
9
55
55
5
44
44
4
33
33
3
22
22
2
11
11
1
