Operating the device
5.4 Operating a device with capacitive multi-touch screen
SIMATIC IPC277E
70 Operating Instructions, 11/2019, A5E35783335-AE
5.4 Operating a device with capacitive multi-touch screen
You operate the multi-touch screen with one or multiple fingers.
Personal injury or property damage due to no earth connection
An inadequate earth connection or the lack of one may cause malfunction of the capacitive
touch screen. Functions may not work properly. This can result in personal injury or
property damage.
• Always connect the device to an earth conductor.
• The earth conductor from the device must be connected directly to earth with low
impedance (short connection, minimum cross-section 2.5 mm
2
= AWG14).
You can find additional information on connecting the earth conductor in the section
"Connecting the protective earth (Page 51)".
Personal injury or property damage due to maloperation
Incorrect operation of devices with a touch screen can occur. This can result in personal
injury or property damage.
Take the following precautions:
• Configure the plant so that safety-related functions are not operated with the touch
screen.
• Switch off the device for cleaning and maintenance.
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