13
COM2: External RS-232 serial port connector
PIN NO.
DESCRIPTION
PIN NO.
DESCRIPTION
1
DCD2
2
RXD2
3
TXD2
4
DTR2
5
GND2
6
DSR2
7
RTS2
8
CTS2
9
RI2
COM1: External RS-232 serial port connector
PIN NO.
DESCRIPTION
PIN NO.
DESCRIPTION
1
DCD1
2
RXD1
3
TXD1
4
DTR1
5
GND1
6
DSR1
7
RTS1
8
CTS1
9
RI1