If your HMI is located in a harsh area (e.g., a machine shop with flying debris, or a food processing plant where water is sprayed), consider installing a protective industrial . These protectors shield the screen from scratches and direct impact while maintaining touch sensitivity. 3. Use Proper Input Tools
You shouldn't need to calibrate an MCGS HMI monthly. If you are, address the root cause:
If you find that the touch screen is still inaccurate, or if it doesn't respond to the startup method, consider these troubleshooting steps: 1. Screen is Misaligned Even After Calibration Dirt or debris on the edges of the screen bezel.
: In some MCGS configuration environments, you can create a "hidden" service button in your project that calls the system function to launch calibration during runtime. mcgs hmi touch calibration
Ensure the unit is properly grounded. If the HMI is in a high-vibration or high-temperature area, you may need a protective enclosure. Maintaining Your MCGS Touch Screen
Some industrial cabinets use an external (trackpad/pointing device) connected via USB or PS/2. These require a different approach, as they do not have a physical screen.
Constant, heavy daily use by operators naturally causes the hardware components to lose some of their baseline accuracy. If your HMI is located in a harsh area (e
Carefully click the targets as they appear sequentially on the screen. Do not use your finger if precision is low; a stylus ensures better coordinate mapping.
If the HMI keeps asking for calibration, the internal memory (EEPROM) that stores the calibration data may be faulty.
: Installing new software or uploading new projects can reset coordinate mapping. Use Proper Input Tools You shouldn't need to
: The cursor will move to several points (usually 4 or 5 positions). Repeat the tapping process for each new location.
If the touch screen is not calibrated correctly, it can lead to incorrect or inconsistent responses, causing errors and downtime in the production process.
Be precise and firm. The accuracy of the calibration depends on how accurately you hit the center of these targets.