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Chapter 2 Hardware Configuration
Page: 2-6
PMB-531LF USER
′
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 DCD1
2 RX1
3 TX1
4 DTR1
5 GND
6 DSR1
7 RTS1
8 CTS1
9 RI1
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 DCD2 TX- TX-
2 RX2 TX+ TX+
3 TX2 RX+ RX+
4 DTR2 RX- RX-
5 GND GND GND
6 DSR2 RTS- NC
7 RTS2 RTS+ NC
8 CTS2 CTS+ NC
9 RI2 CTS- NC