2.7 LCD Voltage (JP1)
JP1 Function
1-2 5V
2-3 3.3V (Default)
2.8 RS-232, RS-422 and RS-485 Select (JP2 & JP3)
JP2 Function
1-2, 4-5, 7-8, 10-11 RS-232 (Default)
2-3, 5-6, 8-9, 11-12 RS-422
2-3, 5-6, 8-9, 11-12 RS-485
JP3 Function
1-2 RS-232 (Default)
3-4 RS-422
5-6 RS-485
2.9 PC/104 + Power I/O (JP4)
JP4 Function
1-2 5V
2-3 3.3V (Default)
2.10 Clear CMOS (JP5)
You can use JP5 pin 1-3 to clear the CMOS data if necessary. To reset the
CMOS data, set JP5 to 2-3 for just a few seconds, and then move the jumper cap
back to 1-2
JP5 Function
1-2 Protect (Default)
2-3 Clear CMOS