Intel FS-979 - Manual (Page 29)

FS-979 User’s Manual Hardware Setup
Serial Port Configuration 29
2.14 <Serial Port Configuration>
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.
Jumper: JCSEL1/2
Type: onboard 12-, 6-pin header
COM2 Mode JCSEL1 JCSEL2
RS-232 1-2/4-5/7-8/10-11 1-2
RS-422 1-2/4-5/8-9/11-12 5-6
RS-485 2-3/5-6/7-8/10-11 3-4
Default setting
3 12
2 6
JCSEL2
10
COM1
2
JCSEL1
5 1
1 1 9
CN_COM2
10