What is the reason for not being loaded or not communication?outdoor advertising digital display screens

　　The reasons why the communication is not loaded is roughly the same. It may be caused by the following reasons. Please compare it according to the items listed and operations:

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

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

　　3. Check and confirm that the serial port connection is intact and non -loose or fall off at both ends.

　　4. Contrast the LED display screen control software and the control cards selected by yourself to select the correct product model, the correct transmission method, the correct string slogan, the correct series transmission rate, and the dial and switch diagram provided in the software correctly. Set the location of the address and the transmission rate on the control system hardware.

　　5. View whether the jump cap is loose or fall off; if the jump cap is not loosened, make sure that the direction of the jump cap is correct.

　　6. If the above inspection and correction still cannot be loaded, please use a multimeter to measure, whether the serial port of the computer or control system hardware is damaged, to confirm whether to send back the computer manufacturer or the control system hard to control the system. The physical delivery is also detected.

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