Operating the device and device functions
5.3 Operating a device with capacitive multi-touch screen
SIMATIC IPC677D
58 Operating Instructions, 09/2014, A5E32995420-AC
Note when operating the multi-touch screen:
● Surface contact with a diameter of about 5 to 20 mm is required for an operator action to
be detected.
● An operation with gloves with a material thickness of <2 mm is detected in most cases.
However, check the usefulness of the gloves you are using.
● To avoid incorrect operation, certain inputs are ignored and blocked from further entry:
– Simultaneous operation with more than 5 fingers.
– Surface contact with a diameter of > 3 cm, for example, resting the palm of the hand
on the touch screen
– As soon as the touch screen is no longer touched, input is possible again.
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.
-touch operation can provide advanced features or pose limitations depending on the
operating system and the software installed on the
device. Read the corresponding
● 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 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.
Chemical resistance of the HMI devices and industrial PCs
(http://support.automation.siemens.com/WW/view/en/39718396)
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