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INSTALLATIONS
JBAT1: Clear CMOS Contents
Use JBAT1, a 3-pin header, to clear the CMOS contents. Note that the
ATX-power connector should be disconnected from the CPU Card
before clearing CMOS.
JBAT1 Setting Function
Pin 1-2
Short/Closed
Normal
Pin 2-3
Short/Closed
Clear CMOS
JP1, JP2, JP3: RS232/422/485 (COM2) Selection
COM1 is fixed for RS-232 use only.
COM2 is selectable for RS232, RS-422 and RS-485.
ID394: COM3 and COM4 are fixed for RS-232 use only. The following
table describes the jumper settings for COM2 selection.
COM2
Function
RS-232 RS-422 RS-485
Jumper
Setting
(pin closed)
JP1:
1-2
JP2:
3-5 & 4-6
JP3:
3-5 & 4-6
JP1:
3-4
JP2:
1-3 & 2-4
JP3:
1-3 & 2-4
JP1:
5-6
JP2:
1-3 & 2-4
JP3:
1-3 & 2-4
JP4, JP5: COM1 / COM2 RS232 +5V/+12V Power Setting
JP4 / JP5 Setting Function
Pin 1-2
Short/Closed
+12V
Pin 3-4
Short/Closed
Normal
Pin 5-6
Short/Closed
+5V
10 IB940 User’s Manual