The industrial touch screen is a resistive screen, which is better than the capacitive screen anti-interference, but generally if there is no response, most of the touch glass on the outside (generally called the touch board) is broken, and it is good to replace it directly, of course, the following problems are not excluded:
1. The touch screen and PLC are generally used together, and the data is exchanged through the communication cable, and the communication cable is broken, the communication port is damaged, or the PLC is not running normally, etc., the industrial touch screen will be in a false "crash" situation, if the DIP switch at the back can enter the screen background menu operation interface, it is generally this problem.
2. The touch screen control card is faulty;
3. The screen has drifted, if conditions permit, you can consider blowing the screen with the hot hair dryer that usually blows your hair, just turn it on to the middle range, blow the screen evenly in the state of shutdown, feel that the screen is hot, and it is generally okay to reboot.
4. Caused by magnetic field and other interference, then stay away from the magnetic field or degaussing treatment, if it is affected by static electricity sweat and oil, the human body may also appear static electricity sweat and oil stains under specific circumstances, and should be actively cleaned to protect. If it is a crash or fake crash, it can generally be solved after turning off the screen or restarting the machine;
5. Caused by excessive touch deviation, there are calibration methods for general industrial touch screens, such as some are operated according to the four corners at the same time.
With the improvement of science and technology, the stability of industrial products is getting stronger and stronger. As a high-tech product, the industrial touch screen has been fully verified in practice. Therefore, when the touch function fails in the touch screen, first try to enter the offline mode and verify that the fault point of the touch screen is burned out. If the reason for the failure is that the backlight burns out, then we can temporarily restore the touch function of the touch screen with the following steps.
1. Click on the three corners of the industrial touch screen to enter the offline mode (note: different touch screens enter the offline mode in different ways).
2. After entering the offline mode, click "Initialize".
3. Once clicked, "SET UP I/O" will appear.
4. When it appears, click "Set Touch Panel".
5. When the option "Use touch panel after the backlight is exhausted" appears, click "Yes" to indicate that the touch function will continue to be used when the touch screen backlight fails.
When designing an industrial touchscreen, designers will add backlight detection to prevent misoperation. Once the backlight burns out, the touch function will be automatically disabled. However, at this point, the function of the touch screen is actually normal, so with the above actions, the touch function can be temporarily enabled to allow the device to continue to use. However, as equipment maintenance personnel, from a rigorous point of view, we must replace the backlight of the touch screen as soon as possible to prevent safety accidents caused by equipment failure or even false triggering of the touch screen.
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