IBASE IB889 - Manual (Page 13)

INSTALLATIONS
IB889 User’s Manual 9
JP5: Clear CMOS Setting
JP5 Setting
Normal
Clear CMOS
JP1, JP2, JP3: RS232/422/485 (COM1) Selection
COM1 is selectable for RS232, RS-422 and RS-485.
COM2 is fixed for RS-232 use only.
The following table describes the jumper settings for COM1 selection.
COM1
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: ATX or AT Power Selection
JP4 ATX Power
ATX
AT
JP6: LCD Panel Power Selection
JP6 LCD Panel Power
3.3V
5V