The LED LCD screen control card is the core component of the LED graphic display screen, which is responsible for receiving the screen display information from the serial port of the computer, placing it in the frame memory, and generating the serial display data and scan control timing required for the LED display according to the partition driving method. . The role of the LED display screen is related to it.
It can be divided into three types: single-color control card, multi-color control card and full-color control card.
Different brands of control cards and corresponding device software are different. The same brand is also divided into different types, the function is very different. The commonly used and simple non-partition control card for small-area monochrome screen is cost-effective; while the larger area can use partition control card, and the price is higher.
The connection methods between the control card and the computer include: network port (TCP/IP), serial port (RS232, RS485), U disk conduction, GPRS wireless connection, Zigbee wireless connection and other main methods.
First of all, understand the standard and size of the LED LCD screen, calculate the number of points, know the role of your needs, whether it is synchronous or asynchronous, and whether secondary development is required; then, confirm the synchronous and asynchronous, confirm the role, confirm the point planning, and confirm the price planning. , after all, confirm the card; choose the right control card, not necessarily high price, good quality is suitable. After all, the software is not suitable for you and your customers.
The first point: Make sure the control card is compatible with the software.
Second point: Make sure that the operating system hardware is powered on correctly.
The third point: choose the correct product type, correct transmission method, correct string slogan, correct baud rate according to the control card software and the control card you choose, and set the work correctly according to the DIP switch diagram provided in the software address bits and baud rate on the computer system hardware.
The fourth point: Check whether the connecting line is detached or loose, and check and confirm that the serial line used to connect the control card is accompanied by the control card. The control card used (2-3, 3-2, 5-5).
Fifth point: If it still fails to load after checking and correcting above, please use a multimeter to measure whether the serial port of the connected computer or control system hardware is damaged, so as to confirm whether it should be returned to the computer manufacturer or the control system hardware. Return inspection.
The sixth point: If the fifth step is inconvenient, please contact the manufacturer for technical support.
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