How to debug the LED display

　　01. What may be caused by loading? The loading may not be caused by the following reasons. Please compare according to the items listed and you are listed:

　　A. Make sure that the hardware of the control system has been correctly electrified. (+5V)

　　B. Check and confirm that the serial lines used to connect the controller are straight lines instead of crossing the cross line.

　　C. Check and confirm that the serial port connection is intact and no loose or fall off at both ends.

　　D. Control LED display control software and control cards selected by yourself to select the correct product model, the correct transmission method, the correct string slogan, the correct baud rate, and the dial -off switching graph provided in the software to correctly set the control control. The address position and Potter rate on the system hardware.

　　E. Check whether the jump cap is loose or fall off; if the jump cap is not loosened, please make sure the direction of the jump cap is correct.

　　F. If the above inspection and correction still fail to load, please use a multimeter to measure whether the serial port of the computer or control system hardware is damaged. Test.

　　02. What may not be caused by communication? The reason why communication is not the same as loading is roughly the same. It may be caused by the following reasons. Please compare it according to the items listed with:

　　A. Make sure the hardware of the control system has been correctly electrified. (+5V)

　　B. Check and confirm that the serial lines used to connect the controller are straight lines instead of crossing the cross line.

　　C. Check and confirm that the serial port connection is intact and no loose or fall off at both ends.

　　D. Control LED display control software and control cards selected by yourself to select the correct product model, the correct transmission method, the correct string slogan, the correct baud rate, and the dial -off switching graph provided in the software to correctly set the control control. The address position and Potter rate on the system hardware.

　　E. Check whether the jump cap is loose or fall off; if the jump cap is not loosened, please make sure the direction of the jump cap is correct.

　　F. If the above inspection and correction still fail to load, please use a multimeter to measure whether the serial port of the computer or control system hardware is damaged. Essence

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