Rs-232/422/485 (Com2) Selection - AXIOMTEK SBC81870 Series User Manual

Note : RS485,short TX- and RX-, short TX+ and RX+ are for
half duplex.
2.6

RS-232/422/485 (COM2) Selection

JP2: RS-232/422/485 (COM2) Selection
This connector is used to set the COM2 function.
The jumper settings are as follows:
COM 2
Function
RS-232
RS-422
RS-485
*** Manufactory default --- RS-232.
16
®
SBC81870 Intel Pentium
Jumper
Jumper
Settings
Illustrations
(pin closed)
Open
1-2, 5-6, 7-8
9-10, 11-12,
13-14
15-16, 17-18,
19-20
1-3, 4-6, 7-8,
9-10
11-12, 13-14,
15-16
17-18, 19-20
®
M w/ DDR/VGA/Dual LAN
Hardware Configuration