Advantech UNO-2271G V2, User Manual, Page: 53 / 60

41 UNO-2271G_V2 User Manual
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A.8.1 RS232/422/485 Setting (SW8/SW1)
SW1 Default
Description 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
COM2
RS232 Mode
Bit 6 ON
Bit 1,2,3,4,5,7,8,9,10 OFF
RS485 Mode
Bit 7,9,10 ON
Bit 1,2,3,4,5,7,8 OFF
RS422 Mode
Bit 6,7,9,10 ON
Bit 1,2,3,4,5,8 OFF