Panel PC USER’S MANUAL
Intel Platform, High Performance PPC
25
3.2.5 RS232/422/485 (COM2) Selection(JP6, JP7, JP8)
COM1 is fixed for RS-232 use only.
COM2 is selectable for RS232, RS-422 and RS-485.
The following table describes the jumper settings for COM2 selection.
COM2
Function
RS-232
RS-422
RS-485
Jumper
Setting
(pin closed)
JP6:
3-5 & 4-6
JP7:
3-5 & 4-6
JP8:
1-2
JP6:
1-3 & 2-4
JP7:
1-3 & 2-4
JP8:
3-4
JP6:
1-3 & 2-4
JP7:
1-3 & 2-4
JP8:
5-6
3.2.6 COM2 RS232 Pin9 Setting(JP9)
Pin
Signal
JP9
Signal
Pin
1
RI
+12V 2
3
RI (Default)
RI (Default)
4
5
RI
+5V 6
COM2 Settings: Pin 1-2 short = +12V, Pin 5-6 short = +5V, Pin 3-4 RI Signal (default)
3.2.7 COM1 RS232 Pin9 Setting(JP10)
Pin
Signal
JP10
Signal
Pin
1
RI
+12V 2
3
RI (Default)
RI (Default)
4
5
RI
+5V 6
COM1 Settings: Pin 1-2 short = +12V, Pin 5-6 short = +5V, Pin 3-4 RI Signal
