Siemens SIMATIC IPC277E Operating Instructions Manual page 72

Operating the device
5.4 Operating a device with capacitive multi-touch screen
Functions of the multi-touch screen
General functions
● Detection of up to 5 finger touches at a time.
● Detection of gestures that are supported by the operating system or the software installed
on the device.
Note
Multi-touch operation can provide advanced features or pose limitations depending on the
operating system and the software installed on the device. Read the corresponding
documentation.
● You do not need to calibrate the touch screen. Some operating systems do offer touch
calibration. However, this calibration does not lead to
improved accuracy.
Security functions in an industrial environment
The touch screen is locked for security reasons when the following happens:
● There is a conductive liquid on the touch screen with ground contact via the enclosure or
the operator, for example.
● Electromagnetic interference is present that exceeds the specification according to EN
61000-4-2.
Once the interference is over, the touch screen is no longer locked.
Additional information
A "touch pen system", which is suitable for both single-touch and multi-touch screens, is
available on the Internet (http://www.siemens.com/automation/mall) (6AV2181-8AV20-
0AX0).
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Operating Instructions, 11/2019, A5E35783335-AE
SIMATIC IPC277E