Advantech UNO-148 - COM Port RS232;422;485 Setting

59 UNO-148 User Manual
Appendix A System Settings/Pin Assignment
A.7 COM Port RS232/422/485 Setting
The default setting for the COM port is RS-232. This can be changed to RS-422 or
RS-485 modes can be configured by adjusting switch on the motherboard.
A.7.1 COM1/COM2 TS232/422/485 Setting (SW1)
A.7.2 COM3/COM4 RS232/422/485 Setting (SW2)
SW1 Default
Description settings This switch is used to select RS232/422/485 mode setting
Default RS232 mode
SW1 Default
Description settings This switch is used to select RS232/422/485 mode setting
Default RS232 mode
COM1
RS232
Mode
Bit 1 ON
Bit 2,3,4,5,6,7,8,9,10 OFF
RS485
Mode
Bit 2,4,5 ON
Bit 1,3,6,7,8,9,10 OFF
RS422
Mode
Bit 1,2,4,5 ON
Bit 3,6,7,8,9,10 OFF