1. The human-machine interface is unresponsive, and there is no response to any part of the contact.
Solution: In this case, first check whether the wiring interface is loose, and then check whether the serial port and the abort number are conflicted, if it is caused by conflict, then the resources should be adjusted to avoid conflict.
Secondly, check whether there are cracks on the surface of the human-machine interface, and replace them in time if cracks are found. In addition, it is also necessary to check whether there is dirt on the surface of the HMI, and if so, use a soft cloth**. Investigate to see if the indicator light on the control box is working properly, and when it is normal, the indicator light is green and flashing.
If the above parts are normal, you can use the replacement method to view the human-machine interface, first replace the control box, then replace the contact screen, and then replace the host.
2. The human-machine interface is normal but the computer cannot be operated. A human-machine interface, after experiments, everything is normal on its own, but after connecting to the host, the computer cannot be operated.
Solution: There are two reasons for this situation. First, it may be that the HMI driver version is too low, and you need to install a new driver. Second, it may be that before the host starts to load the HMI driver, the HMI control card receives the operation signal, and only needs to turn off the power from the beginning and then start the computer.
3. Contact is forbidden. A sonic human-machine interface with an external sonic interface that touches the screen of the monitor with your fingers cannot complete the corresponding operation normally.
Solution: There are two reasons for this phenomenon. **It is possible that the reflective fringes of the sound wave screen are slightly damaged, and if this happens, it will not be completely repaired; **It is possible that after the sonic human-machine interface is used for a period of time, the reflective stripes around the screen are covered with dust, which can be wiped with a dry soft cloth, and then the power is off, the computer is started from scratch and calibrated from scratch.
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