Common failures of HMI touch screens are:
1 fault.The touch screen is inconsistent
The position of the finger does not match the cursor.
Reason: after installing the driver, when the position is calibrated, an unstable contact point.
Solution: recalibrate the center.
Failure 2: some touch areas have inconsistent responses
Cause: the touch screen surface accumulated thick dust or scale, affecting signal transmission.
Solution: clean the touch screen.In particular, the sound reflection stripes on the edge of the touch screen.When cleaning the screen, please remember to cut off the power to avoid damage.
Fault 3: no response from touch screen
There are many reasons for this, please check the following:
The touch screen surface accumulated thick dust or scale, affect the signal transmission.
Touch screen fault;
(4) touch screen signal line fault;
(5) computer host serial port fault;
6. Computer operating system fault;
Touch screen driver installation error.