Siemens sinumerik 840d sl Configuration Manual page 52

Device configuration
4.4 Configuring screen resolution (PC systems)
Note
"Screen resolution" setting must match the actual resolution of the operator panel front
used
If the wrong screen resolution has been entered in the Runtime settings, the scroll bars or
the picture will not fill the screen on the HMI device at runtime.
If the screens are not displayed correctly in runtime, adjust the setting as described
above.
4. To prevent the display of scroll bars, activate full-screen mode with "Runtime settings >
General".
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SINUMERIK Integrate Create MyHMI / WinCC V13 SP1
Configuration Manual, 11/2014