User`s manual

Chapter 2 Hardware Configuration
PMB-562LF USER ′ S MANUAL
Page: 2-7
COM3 : COM3 Connector
COM3 is selectable as RS-232/422/485.
The pin assignment is as follows :
ASSIGNMENT
PIN
RS-232 RS-422 RS-485
1 DCD3 TX- TX-
2 RX3 TX+ TX+
3 TX3 RX+ RX+
4 DTR3 RX- RX-
5 GND GND GND
6 DSR3 RTS- NC
7 RTS3 RTS+ NC
8 CTS3 CTS+ NC
9 RI3 CTS- NC
COM4 : COM4 Connector
COM4 is fixed as RS-232.
The pin assignment is as follows:
PIN ASSIGNMENT
1 DCD4
2 RX4
3 TX4
4 DTR4
5 GND
6 DSR4
7 RTS4
8 CTS4
9 RI4
10 NC