Chapter 2 Hardware Configuration
Prox-2622 USER
’
S MANUAL
Page: 2-11
2-10. COM PORT CONNECTOR
You will find two COM port in our Prox-2622 board. COM1 is fixed for
RS-232, while the COM2 is selectable for RS-232/422 and RS-485 by
jumper selection.
COM1 :
COM1 Connector, DB9 male connector
The COM1 Connector assignments is as follows:
PIN ASSIGNMENT
1 DCD
2 RX
3 TX
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
COM2 :
COM2 Connector, DB9 male connector
The COM2 Connector assignments is as follows :
PIN ASSIGNMENT
RS-232 RS-422 RS-485
1 DCD TX- TX-
2 RX TX+ TX+
3 TX RX+ RX+
4 DTR RX- RX-
5 GND GND GND
6 DSR RTS- NC
7 RTS RTS+ NC
8 CTS CTS+ NC
9 RI CTS- NC
10 NC NC NC
