Commell MS-C75 - Serial Port

MS-C75 User’s Manual
-27-
2.11 <Serial Port>
The board supports five RS232 serial port and one jumper selectable
RS232/422/485 serial ports. The jumper JCSEL1 & JCSEL2 can let you configure
the communicating modes for COM2.
Connector: COM1/3
Type: 9-pin D-sub male connector on bracket for COM1/3
Pin
Description
Pin
Description
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
10
N/C
Connector: COM2
Type: 9-pin D-sub male connector on bracket for COM2
Pin
Description
Pin
Description
1
DCD/422TX-/485-
2
RXD/422TX+/485+
3
TXD/422RX+
4
DTR/422RX-
5
GND
6
DSR
7
RTS
8
CTS
9
RI
10
N/C
Setting RS-232 & RS-422 & RS-485 for COM2
Connector: CN_COM4/5/6
Type: 9-Pin box header
Pin
Description
Pin
Description
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
10
N/C
COM1
COM3
COM2
1
2
9
10