Personal Computer User Manual

170 PPC-120/140 User’s Manual
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
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