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：
As soon as the "start" prompt progress bar appears, tap the screen repeatedly with your finger or a stylus.
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Comprehensive Guide to MCGS HMI Touch Calibration: Ensuring Precision and Responsiveness mcgs hmi touch calibration
| 常见现象 | 可能原因 | 排查与解决方法 | | :--- | :--- | :--- | | | 软件卡死、驱动异常、触摸控制IC损坏 | 1. 带电状态下长按"重启"键或断电30秒后重启。 2. 外接鼠标进入设置，检查触摸类型配置（电阻/电容）是否与硬件匹配。 3. 若硬件损坏，需联系供应商维修或更换触摸屏。 | | 校准后仍偏差较大 | 校准点击不精确、驱动程序不兼容、屏幕表面有异物 | 1. 清洁屏幕，去除油污或水渍，避免在校准过程中移动触摸屏。 2. 重新运行校准，确保每次点击都垂直按在十字光标的中心点。 3. 更新MCGS驱动程序至官网最新版本。 | | 部分区域触摸不准确 | 声波式触摸屏边缘积灰、显示屏老化 | 1. 清洁触摸屏 四周的声反射条纹 （注意先断电）。 2. 若清洁后无效，可能是触摸层物理损坏，需返厂维修。 | | 触摸完全无响应 | 信号排线松动、触摸玻璃破损、供电异常 | 1. 检查TPC与PLC/控制器之间的通讯线（USB/串口线）是否插紧。 2. 用万用表测量24V DC供电电压是否稳定（允许±10%波动）。 3. 查看触摸屏与主板的连接排线是否氧化或断裂，重新插拔或更换。 |
Touch screen calibration aligns the input detection of the screen with the actual touch points to ensure accurate interaction on HMI devices. While many modern systems are robust, calibration is necessary when:
This is the most reliable method if the screen is so misaligned that you cannot click on-screen buttons. : Completely shut down the HMI power supply. | | Calibration works
If you are developing or modifying the HMI project inside , you can build a dedicated maintenance button directly into your user interface. Open your project workspace in the MCGS software.
Never use screwdrivers, pens, or sharp tools to calibrate the screen. Use a proper stylus or your finger, as sharp objects can permanently damage the resistive layer.
. The system will automatically launch the touch screen calibration utility. Perform Calibration : A crosshair cursor (usually a | Restart the HMI and recalibrate
| Step | Action | |------|--------| | 1 | A crosshair appears in the corner. Press it firmly for 1 second. | | 2 | Crosshair moves to top-right . Repeat. | | 3 | Crosshair moves to bottom-left . Repeat. | | 4 | Crosshair moves to bottom-right . Repeat. | | 5 | Crosshair moves to center . Press once. |
This works for the majority of MCGS models, including the TPC series and newer TPC Pro series.
| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | | You tapped too far off-center or used the wrong tool. | Restart the HMI and recalibrate, tapping the exact center of each crosshair. | | Calibration menu won't appear | The touch area for the hidden menu may also be misaligned. | Use a USB mouse. Plug a standard USB mouse into the HMI’s USB port. Use the mouse to click the top-left corner and access the system menu. | | Screen unresponsive after calibration | Calibration data corrupted. The driver cannot map touches. | Perform a hard reset (if a physical reset button exists) or re-flash the firmware. Otherwise, connect a mouse and delete the calibration registry keys (requires advanced WinCE knowledge). | | Only half the screen works | Physical digitizer failure or loose ribbon cable. | Hardware repair needed. Calibration will not fix this. | | Calibration works, but drifts again after 1 hour | Overheating or strong EMI (electromagnetic interference). | Check HMI ventilation and reroute power cables away from signal wires. |
Replacing a HMI, updating firmware, or cleaning the display can shift the touch matrix.