COMMELL LV-669 - Manual (Page 31)

LV-669 User’s Manual Hardware Setup
Power and Fan Connector 31
2.14
The board provides three RS232 serial ports, with jumper selectable RS422/485 for
COM2.
Connector: COM2
Type: DB9 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
Connector: CN_COM3/4
Type: 10-pin (5 x 2) header for COM2
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
JCSEL1 JCSEL2
RS-232
RS-485
RS-422
1 11
2 12 2 6
1 5