Siemens SIMATIC HMI Operating Instructions Manual page 145

1. Briefly touch the center of the calibration crosshairs ①.
2. Touch the middle of the calibration crosshairs for each position.
1. Touch the screen within 30 seconds.
2. Close the dialog.
Result
The HMI device touch screen is now recalibrated.
Mobile Panel 277F IWLAN
Operating Instructions, 12/2007, A5E01003940-01
The calibration crosshairs is then displayed at four more positions.
If you do not touch the middle of the calibration crosshairs, the procedure is repeated.
Once you have touched the calibration crosshairs for all positions, the following dialog
appears:
New calibration settings have been measured.
Tape the screen to register saved data.
Wait for 30 seconds to cancel saved data and
keep the current setting.
Time limit: 30 sec
The new calibration is saved. If you wait longer than 30 seconds, the new calibration is
discarded and the original calibration remains in effect.
The "OP Properties" dialog box, "Touch" tab is displayed again.
Configuring the operating system
6.4 Changing settings for operation
145