COMMELL FS-A70 - Manual (Page 27)

FS-A70 User’s Manual
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2.13 <Serial Port>
The board supports one 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: CN_COM1/2
Type: 10-pin (5 x 2) 2.54mm x 2.54mm-pitch header for COM2
Pin Description Pin Description
1 DCD/422RX-/485- 2 RXD/422RX+/485+
3 TXD/422TX+
4 DTR/422TX-
5 GND 6 DSR
7 RTS 8 CTS
9 RI 10 N/C
1 9
2 10
CN_COM1/2
JCSEL1
JCSEL2