This is the fastest method to force calibration when the screen is too misaligned to navigate the normal menus. the MCGS HMI unit completely.
An inaccurate or unresponsive touch screen on an MCGS (Kunlun Tongtai) HMI can halt factory production lines. Over time, physical wear, temperature shifts, and electrical interference can cause the touch coordinates to drift. Calibrating the screen restores precision and prevents costly operational errors. Why MCGS HMI Screens Lose Calibration
对于安装了McgsPro工程（新款机型）的触摸屏，除了长按空白处三秒之外，也可以在工程运行时通过界面完成校准：
Locate the small physical button on the back of the HMI (if available), or look for a hidden system invocation button configured on your runtime screen. mcgs hmi touch calibration
Conclusion Accurate touch calibration is a small but vital part of HMI reliability and operator effectiveness in MCGS-based control systems. Regular calibration, thorough verification, sensible environmental and hardware practices, and prompt troubleshooting of anomalies keep operator inputs precise and processes safe. Documenting calibration events and adopting simple preventive measures will reduce downtime and extend the usable life of HMI panels.
Why Touch Calibration Matters
: Extreme heat or cold changes the electrical resistance of the touch panel. This is the fastest method to force calibration
: For the best results, use a plastic stylus rather than a finger to ensure you hit the absolute center of the crosshairs.
You have to touch slightly above, below, or to the side of a graphical button for it to activate.
If the screen fails to respond to the calibration shortcut entirely, the glass digitizer must be physically replaced. To help me tailor any further technical steps, tell me: What is the exact model number of your MCGS TPC screen? Over time, physical wear, temperature shifts, and electrical
Are you experiencing , or just minor drift ? Share public link
: Power on the HMI. When the "start" prompt progress bar appears, tap anywhere on the screen with a finger or touch pen.
From the operational screen, find the "System Setting" or "Maintenance" button. Locate Calibration: Tap on Touchscreen Calibration .