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JP2: LCD Panel Power Selection
JP2 LCD Panel Power
3.3V
5V
JP3, JP4, JP5: RS232/422/485 (COM2) Selection
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)
JP3:
1-2
JP4:
3-5 & 4-6
JP5:
3-5 & 4-6
JP3:
3-4
JP4:
1-3 & 2-4
JP5:
1-3 & 2-4
JP3:
5-6
JP4:
1-3 & 2-4
JP5:
1-3 & 2-4
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IB957 User’s Manual