User`s manual

SBC81203 LGA775 SBC User’s Manual
Jumpers and Connectors
7
2.3 Jumper Settings
Proper jumer settings configure the SBC81203 to meet your
application purpose.
2.3.1 COM2 Mode Select Jumpers (JP4, JP5, JP6)
These jumpers select the COM2 port’s communication mode to operate
RS-232 or RS-422/485.
Description Function Jumper Setting
RS-232
(Default)
JP4
1
3
5
7
2
4
6
8
JP5
1
3
5
2
4
6
JP6
1
3
5
2
4
6
RS-422
JP4
1
3
5
7
2
4
6
8
JP5
1
3
5
2
4
6
JP6
1
3
5
2
4
6
COM2
RS-485
JP4
1
3
5
7
2
4
6
8
JP5
1
3
5
2
4
6
JP6
1
3
5
2
4
6