1, restart. If the touch screen crashes, try restarting the device. Sometimes a simple power-off and power-on can solve the problem.
2. Clean up the dust. Dust or stains on the touch screen may affect its sensitivity. You can remove the touch screen and gently wipe the screen and surrounding area with a clean cloth.
3. Check the cable. If the touch screen is hit or vibrated, it may be that the cable is loose or the contact is poor. You can check and reconnect the cable.
4. Check the power supply. Ensure that the power connection of the touch screen is correct and stable. Check whether the power cord is damaged and the power supply is normal.
5. Check the touch screen controller. If the touch screen controller fails, it will also cause the touch screen to fail. You can check whether the input and output signals and communication interfaces of PLC are normal.
6. Replace the touch screen assembly. If the above method can't solve the problem, it may be necessary to replace some parts of the touch screen, such as the touch film, circuit board or connecting wire. In addition, if the communication between the touch screen and other devices is abnormal, please check whether the communication cable and interface are normal and whether the communication protocol matches. When dealing with these problems, if you are not sure how to operate, it is recommended to contact professional technicians or manufacturers for maintenance.