Overview   
1.9 Fail-safe operation of KP8F and KP32F 
  KP8, KP8F, KP32F 
20  Operating Instructions, 11/2011, A5E03284305-02 
Released protocols    
The HMI device uses the following protocols for communication with the controller:  
●  PROFINET IO for standard communication 
●  PROFIsafe Mode V2.0 for fail-safe communication of the KP8F and KP32F 
1.9  Fail-safe operation of KP8F and KP32F 
Configuring software   
For fail-safe operation of the HMI device, the following software is required:  
●  STEP 7 V5.5 and higher 
●  SIMATIC S7 Distributed Safety, as of V5.4 
Fail-safe automation system   
A fail-safe automation system (F System) is used in plants with increased safety 
requirements. 
An F system controls production processes so that residual error probability is taken into 
consideration to achieve a safe operating state when a shutdown occurs. An immediate 
shutdown therefore does not pose a danger to people or the environment.