COMMELL P4BWA - Manual (Page 31)

P4BWA User’s Manual
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2.14 <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_COM2
Type: 10-pin (5 x 2) 2.54mm x 2.54mm-pitch box header 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
CN_COM 2
1
2
9
10