User`s manual

Chapter 2 Hardware Configuration
Page: 2-6
Prox-B501 USER
c S MANUAL
2-4. COM PORT CONNECTOR
COM1 : COM1 Connector
COM1 is fixed as RS-232.
The pin assignment is as follows :
PIN ASSIGNMENT
1 DCD
2 RX
3 TX
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
10 NC
COM2 : COM2 Connector
The COM2 is selectable as RS-232/422/485.
The pin assignment is as follows :
ASSIGNMENT
PIN
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
1
6
5
10
COM2
COM1