FS-979 Users 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 he ader
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
312
2 6
JCSEL2
10
COM1
2
JCSEL1
5
11
1 9
CN_COM2 10