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                Home > Products > FAQ

                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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