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        FAQ

        After-sales common problems :


        1, The phenomenon:  can't open the serial port


         Analysis: The serial port didn’t choose right 


        Solution: Check the port under the device manager list, silicon LABS SP210X USB TO UART BRIDGE, corresponding to the com port , and adjust the same one in debugging assistant 


        2, phenomenon: No response after handshake 


        Analysis: RXD, TXD cable connection is not normal
        Solution: 


        (1) To check whether the RXD and TXD of high-speed download line, and HMI DOUT, DIN is connected correctly.


        (2) Confirmed the serial port type is TTL or 232 . Different one with different download line.


        (3) Confirm the Parity way is no parity or space parity, The factory default is space parity .






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