I/O configuration variants 
  6.8 Media redundancy 
CPU 410 Process Automation/CPU 410 SMART 
System Manual, 05/2017, A5E31622160-AC 
99 
 
Note 
Before physically joining the ring together, download the configuration of your project to the 
individual devices. 
 
You can also combine media redundancy under PROFINET IO with other PROFINET IO 
functions.  
For additional information, refer to the STEP 7 Online Help and to Manual PROFINET 
System Description (http://support.automation.siemens.com/WW/view/en/19292127).