COMMELL LV-667 - Manual (Page 31)

LV-667 User’s Manual Hardware Setup
Serial Port 31
2.14
The board provides four RS232 serial ports, with jumper selectable +5V/+12V output for
COM3 and COM.
Connector: CN_COM3/4
Type: 10-pin (5 x 2) header for COM3/4
Pin Description Pin Description
1 DCD/+5 2 SIN
3 SO 4 DTR
5 GND 6 DSR
7 RTS 8 CTS
9 RI/+12V 10 N/C
Jumper: JC1/3
Type: Onboard 3-pin jumper
JC1/3 Mode
1-2 COM3/4 pin-1 for +5V output
2-3 RIN1
Default setting
Jumper: JC2/4
Type: Onboard 3-pin jumper
JC2/4 Mode
1-2 COM3/4 pin-9 for +12V output
2-3 -XRI
Default setting
JC4/3/2/1
1
3
CN_COM3
CN_COM4 1
10