To calibrate your MCGS TPC Series HMI touch screen, you must interrupt the normal boot sequence to enter the setup interface. Step-by-Step Calibration Guide Enter the Boot Setup Interface Power Cycle
: Turn off the 24V DC power to the HMI and then power it back on. Trigger Setup : As soon as the "start" prompt progress bar
appears on the boot screen, tap anywhere on the screen with your finger or a touch pen. : Do not perform any other actions for about 30 seconds
. The system will automatically initiate the touch screen calibration process. Perform Calibration Touch Crosshairs
: A series of crosshair cursors (targets) will appear on the screen. Center Alignment
: Use a touch pen or finger to press firmly and accurately in the exact center of the crosshair. Hold and Release
: Hold your touch until the cursor moves to the next point, then lift your finger/pen. Repeat this for all points displayed (typically the corners and center). Cancel Option : If you make a mistake, you can usually press the key to cancel the process and start over. Finalize and Save Completion Message : Once all points are touched, the screen will display: "The new calibration settings have been set"
: Tap anywhere on the screen to exit the calibration utility and proceed to the engineering operation interface. 中国工控网 Troubleshooting & Maintenance Unresponsive Touch
: If the screen is completely unresponsive, try cleaning the surface of dirt or debris before restarting. If it persists, it may indicate hardware damage. Safety Warning
: Never use sharp objects (like screwdrivers) to calibrate the screen, as this will permanently damage the touch layer. Power Stability
: Ensure your 24V DC power supply is stable, as fluctuations can cause display distortion or touch lag.
For more specific hardware details, you can refer to the official MCGS Technical Support 中国工控网 manually add a calibration button mcgs hmi touch calibration
within your MCGS project software to trigger this process without a reboot? External Interface Product Installation
To calibrate the touch screen on an MCGS (Kunlun Tongtai) HMI, you can use several methods depending on whether you can access the current interface or need to force a calibration at startup. 1. Hardware Trigger (DIP Switches)
This is the most reliable method if the touch is so misaligned that you cannot click buttons. Locate DIP Switches
: Find the 4-position DIP switch block on the back of the HMI. Toggle Switch 1 : Flip the first DIP switch
: Power cycle the HMI. It will automatically boot into a calibration screen with a white background and a crosshair.
: Use a stylus or finger to tap the center of the crosshair as it moves to different points (usually 5 points: corners and center). Save and Reset : After completion, a dialog may appear. Choose
if you want to keep your existing project (selecting "YES" may clear the internal program on some models). : Flip the DIP switch back to
before restarting again, or it will stay in calibration mode. 中国工控网 2. Startup Progress Bar Method If you don't want to open the panel to reach the switches: : Watch the screen during the initial boot sequence. Tap Progress Bar
: When the "Start" prompt or progress bar appears, tap it with your finger.
: If you enter the startup properties window and do nothing for 30 seconds
, the system will automatically launch the touch calibration program. Manual Entry To calibrate your MCGS TPC Series HMI touch
: Alternatively, in that same properties window, look for a "System Maintenance" or "TPC System Settings" button, navigate to the "Touch Screen" tab, and click "Calibrate" 中国工控网 3. Software/OS Desktop Method If your HMI allows access to the underlying WinCE desktop: Control Panel Open Settings : Double-click the "TPC System Settings" Run Calibration : Select the "Touch Screen" tab and click the "Recalibrate" 知乎专栏
: Always use a plastic stylus for better precision during calibration, and avoid using sharp metal objects that could damage the screen surface. Are you having trouble reaching the back of the HMI, or is the screen completely unresponsive even after a restart? How to Calibrate a Touchscreen
in this video we will go through how to calibrate the touchcreen on an agleer inside display from the home screen press the setup. Ag Leader Tutorials How to Calibrate a Touchscreen
in this video we will go through how to calibrate the touchcreen on an agleer inside display from the home screen press the setup. Ag Leader Tutorials External Interface Product Installation
To calibrate an (TPC series), you must access the boot-level setup menu during the power-on sequence. This process aligns the physical touch panel with the visual display coordinates to fix offsets or unresponsive areas. 中国工控网 Calibration Procedure
Follow these steps to initiate and complete the touch calibration: Enter Boot Setup Cycle the power to the HMI (24V DC). During boot-up, a progress bar will appear with a
Immediately tap anywhere on the screen with your finger or a stylus to enter the Boot Setup interface. Initiate Calibration Once in the setup interface, wait approximately 30 seconds
without touching anything; the system will automatically launch the calibration utility. Target Alignment crosshair (+) cursor will appear on the screen.
Use a touch pen or finger to press firmly and precisely in the of the crosshair.
Hold until the cursor moves to the next position, then lift.
Repeat this for all points (usually 4 or 5 points covering corners and center). Save and Exit Once finished, a message stating "The new calibration settings have been set" will appear. Power on the HMI normally
Tap the screen once more to exit the utility and boot into the standard engineering or operation interface. 中国工控网 Troubleshooting & Maintenance Recommended Action Drifting Cursor
Re-run calibration using a precise stylus rather than a finger for better accuracy. Unresponsive Screen
Clean the surface of debris or moisture before calibrating. Check for physical damage to the touch glass. Ghost Touches
Ensure there is no electromagnetic interference nearby and check that the HMI is properly grounded.
Before diving into the "how," it is essential to understand the "why." Resistive and capacitive touch screens operate on different principles, but both are susceptible to environmental and mechanical factors.
On Windows CE HMIs, touch calibration is stored in the registry at:
HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\TOUCH
You can export this key to a .reg file and save it to a USB drive. If calibration becomes corrupted, you can import the backup.
Troubleshooting: If you cannot trigger the calibration with three fingers, your model uses the "System Menu" method (see below).
You perform the 5-point calibration, reboot, and... it’s wrong again. This indicates one of three issues:
| Symptom | Likely Cause | Fix | |---------|--------------|-----| | Drift returns after power cycle | Dead backup battery (on older units) | Replace CR2032 battery on mainboard | | Crosshairs jump during calibration | Dirty screen or debris under bezel | Clean edges with compressed air | | One axis works, other is inverted | Corrupted touch driver | Re-flash MCGS firmware via USB |
To get the most out of your MCGS HMI and avoid frequent recalibration, follow these expert recommendations.