Siemens SIMATIC CPU 410 System Manual page 99

Note
Before physically joining the ring together, download the configuration of your project to the
individual devices.
Topology
You can also combine media redundancy under PROFINET IO with other PROFINET IO
functions.
Additional information
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).
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
I/O configuration variants
6.8 Media redundancy
99