Chapter 2 Hardware Configuration
Page: 2-6
Prox-1650 USER'S MANUAL
2-4. COM PORT CONNECTOR
Four COM port is enhanced in this board namely: COM1, COM2, COM3
and COM4. COM1, COM3 and COM4 is fixed for RS-232 while COM2
is selectable for RS-232/422/485.
COM1 :
COM1 Connector, DB9 male connector
The COM1 Connector assignments are as follows :
PIN ASSIGNMENT
1 DCD1
2 RXD1
3 NTXD1
4 NDTR1
5 GND
6 NDSR1
7 NRTS1
8 NCTS1
9 NRI1
COM2 :
COM2 Connector
The COM2 Connector assignments are as follows :
PIN ASSIGNMENT
RS-232
RS-422
RS-485
1 DCD2 TX- TX-
2 TIN2
TX+ TX+
3 ROUT2
RX+ RX+
4 RDTR2 RX- RX-
5 GND
GND
GND
6 TDSR2
RTS- NC
7 TRTS2
RTS+ NC
8 RCTS2
CTS+ NC
9 RIN2
CTS- NC
10 NC NC NC
COM2
1
5
6
10
