DFI BT253 - Lcd;Inverter Power Select; COM 4;DIO Select

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16
Chapter 2 Hardware Installation
Chapter 2
COM 4/DIO Select
1-2, 4-5, 7-8, 10-11 On:
COM 4 (default)
79
13
10 12
46
The system board uses JP21 and JP22 to select between RS232/422/485 COM 4 or isolated
8-bit DIO at the rear panel.
Note:
You cannot use COM 4 and DIO at the same time. Please set up JP21 and JP22 to-
gether.
3
JP22
JP21
2-3, 5-6, 8-9, 11-12 On:
DIO
79
13
10 12
46
LCD/Inverter Power Select
3
JP2
132
132
2-3 On: +5V
1-2 On: +12V (default)
JP2 is used to select the power level of the LCD/inverter power connector.