COMMELL LV-676 - Manual (Page 34)

LV-676 User’s Manual Hardware Setup
Serial Port 34
2.14
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 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
JCSEL1 JCSEL2
SIR
RS-422
RS-485
RS-232
8 2
7 1
10
1
2
1
12
11
2
9