IMB520R / 521R LGA1151 ATX Motherboard
10
Board and Pin Assignments
2.4.3
COM1 Mode Select (JP4, JP5, JP6)
Use these jumpers (3x2-pin p=2.54mm) to set COM1 port to operate in RS-232, RS-422
or RS-485 communication mode.
JP6 JP4 JP5
2.4.4
COM2 Mode Select (JP1, JP2, JP3)
Use these jumpers (3x2-pin p=2.54mm) to set COM1 port to operate in RS-232, RS-422
or RS-485 communication mode.
JP3 JP1 JP2
2.4.5 Temperature Sensor Source Select (JP7)
Use these jumpers (3x1-pin p=2.54mm) to set temperature sensor source to operate
form external or onboard mode.
Note
An external sensor can be installed at 2-3.
Function
Setting
RS-232 mode
(Default)
JP6 1-2 close
JP4 3-5, 4-6 close
JP5 3-5, 4-6 close
RS-422 mode
JP6 3-4, 7-8 close
JP4 1-3, 2-4 close
JP5 1-3, 2-4 close
RS-485 mode
JP6 5-6, 7-8 close
JP4 1-3, 2-4 close
JP5 1-3, 2-4 close
Function
Setting
RS-232 mode
(Default)
JP3 1-2 close
JP1 3-5, 4-6 close
JP2 3-5, 4-6 close
RS-422 mode
JP3 3-4, 7-8 close
JP1 1-3, 2-4 close
JP2 1-3, 2-4 close
RS-485 mode
JP3 5-6, 7-8 close
JP1 1-3, 2-4 close
JP2 1-3, 2-4 close
Function
Setting
Onboard Sensor(Default)
1-2 close
External Sensor
2-3 close
