Advantech PPC-179T, User Manual, Page: 39 / 58

29 PPC-179T User Manual
Chapter 5
Jumpers
and
Connectors
5.1.2 Jumpers
The motherboard of the panel PC has a number of jumpers that help configure the
system. It also has LED indicator lamps that display the system operation status. The
table below lists the function of each jumper and LED.
The motherboard of the PPC-179T has a number of jumpers that allow you to config-
ure your system to suit your applications.
Table 5.1: Jumper Setting
JP3 ATX/AT Mode Selection
JP4 CMOS CLEAR
JP6 COM1/COM2 RI Type Select
JP7 COM3 RS232/422/485 Select
Table 5.2: JP3(ATX/AT Mode Selection)
Setting Function
(1-2) AT
(2-3) ATX (default)
Table 5.3: JP4(CMOS CLEAR)
Setting Function
(1-2) does not clear CMOS (default)
(2-3) clear CMOS
Table 5.4: JP6(COM1/COM2 RI Type Select)
Setting Function
(1-3) Add COM1 RI (default)
(2-4) Add COM2 RI (default)
(5-7) COM1 RI use 5V
(7-9) COM1 RI use 12V
(6-8) COM2 RI use 5V
(8-10) COM2 RI use 12V
Table 5.5: JP7(COM3 RS232/422/485 Select)
Setting Function
(5-6) (7-9) (8-10) (13-
15) (14-16) RS232 (default)
(3-4) (9-11) (10-12) (15-
17) (16-18) RS422
(1-2) (9-11) (10-12) (15-
17) (16-18) RS485