User manual

IA31 Motherboard User Manual
10
2.4.2 JP2 : CF Card Priority
JP901 can be configured to operate CF Card Priority in Master/Slave mode.
2.4.3 JP6: RS232 / RS422 / RS485 Selector
The jumper can be configured to operate COM2 in RS-232/422/485 mode. And the
setting must be cooperated with the 2.4.3 settings.
2.4.4 JP7 : LCD Panel Voltage Select
JP7 can be configured to operate in 3.3Volts / 5Volts / 12Volts mode.
Pin No. Functions
1 Short 2 Master
2 Short 3 Slave
Pin No. Functions
1 Short 2 RS232
3 Short 4 RS422
5 Short 6 RS485
Pin No. Functions
1 Short 2 3.3Volts Selected
3 Short 4 5Volts Selected
5 Short 6 12Volts Selected
5Volts
1
3
5
2
4
6
3.3Volts
1
3
5
2
4
6
12Volts
1
3
5
2
4
6
1
2
3
Master
1
2
3
Slave
RS232
1
3
5
2
4
6
RS422
1
3
5
2
4
6
RS485
1
3
5
2
4
6