Vox PMB-472LF User Manual page 19

COM3 : COM3 Connector
COM3 is selectable as RS-232/422/485.
The pin assignment is as follows :
PIN
1
2
3
4
5
6
7
8
9
COM4 : COM4 Connector
COM4 is fixed as RS-232.
The pin assignment is as follows:
PIN
1
2
3
4
5
6
7
8
9
10
PMB-472LF USER
ASSIGNMENT
RS-232 RS-422
DCD3 TX-
RX3 TX+
TX3 RX+
DTR3 RX-
GND GND
DSR3 RTS-
RTS3 RTS+
CTS3 CTS+
RI3 CTS-
ASSIGNMENT
DCD4
RX4
TX4
DTR4
GND
DSR4
RTS4
CTS4
RI4
NC
'
S MANUAL
Chapter 2 Hardware Configuration
RS-485
TX-
TX+
RX+
RX-
GND
NC
NC
NC
NC
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