Safety instructions 
  2.6 Notes on the touch screen 
SIMATIC IPC PX-39A PRO 
Operating Instructions, 11/2022, A5E51699950-AA  
33 
2.6  Notes on the touch screen 
 
Personal injury or property damage due to incorrect operation 
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. 
 
Make sure that the touch screen is kept free of dirt. 
 
Damage to the touch screen 
Impact with hard objects as well as touching the touch screen with pointed or sharp objects 
can damage it and lead to a significant reduction in service life or even total failure of the 
touch screen. 
Never touch the touch screen with pointed or sharp objects. Only touch the touch screen 
with your fingers, a touch stylus or an approved touch glove. 
Avoiding malfunctions 
 
Personal injury or property damage due to no protective conductor 
An inadequate protective conductor or the lack of one might 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 a protective conductor. 
•  Additional information on connecting the protective conductor can be found in the 
section "Connecting the protective conductor (Page 54)."