User Manual

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switch according to the instructions in the function selection, then insert the module into the
computer and use the serial debugging assistant to send data to see if there is corresponding data to
return. If you can receive the data sent, the module is functional.
5.2 USB-232
Connect the module's 232T and 232R with DuPont line, dial the corresponding DIP switch
according to the instructions in the function selection, then insert the module into the computer and
use the serial port debugging assistant to send data to see if there is corresponding data to return. If
you can receive the data sent, prove that the module is functioning properly.
5.3 USB-485
(This mode test needs to be combined with other 485 devices, such as two three-in-one
modules)
Take two three-in-one serial port modules, connect A and B of the two modules with
DuPont line, A to A and B to B. Insert the module into the computer, open two serial port
debugging assistants, and select the serial port numbers corresponding to the two three-in-one
serial port modules. Use one of them to send and see if another serial port can receive the
corresponding data. If you can receive the data sent, the module is functional.