Chapter 2 Hardware Configuration
Page: 2-6
PMB-732LF 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 COM1_DCD#
2 COM1_RX
3 COM1_TX
4 COM1_DTR#
5 GND
6 COM1_DSR#
7 COM1_RTS#
8 COM1_CTS#
9 COM1_RI#
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 COM2_DCD#
TX-
TX-
2 COM2_RX TX+ TX+
3 COM2_TX RX+ RX+
4 COM2_DTR#
RX-
RX-
5 GND GND
GND
6 COM2_DSR#
RTS- GND
7 COM2_RTS#
RTS+ GND
8 COM2_CTS#
CTS+ GND
9 COM2_RI# CTS- GND
