Jumper Settings; Com2 Mode Select Jumpers (Jp1, Jp2, Jp3) - AXIOMTEK SBC81206 Series User Manual

2.3

Jumper Settings

Proper jumper settings configure the SBC81206 to meet your application purpose. We are
herewith listing a summary table of all jumpers and default settings for onboard devices,
respectively.
Jumper
JP1 COM2 Mode Select
JP2 COM2 Mode Select
JP3 COM2 Mode Select : RS-232
JP6 ATX Auto Power On/Off : Disable
JP7 Clear CMOS Setting : Normal
2.3.1

COM2 Mode Select Jumpers (JP1, JP2, JP3)

These jumpers select the COM2 port's communication mode to operate RS-232 or
RS-422/485.
Description
COM2 Mode Select
Board and Pin Assignments
SBC81206 PICMG1.0 SBC User's Manual
Default
COM2 Pin 1: DCD
COM2 Pin 8: RI
COM2 Pin 1: DCD
COM2 Pin 8: RI
Function
JP1
RS-232
(Default)
JP1
RS-422
JP1
RS-485
Setting
Short 3-5
Short 4-6
Short 3-5
Short 4-6
Short 1-2
Short 1-2
Short 1-2
Jumper Setting
JP2 JP3
JP2 JP3
JP2 JP3
7