Functions
5.4 Media redundancy (ring topologies)
PROFINET with STEP 7 V15
Function Manual, 12/2017, A5E03444486-AH
165
the unassigned port of the first device.
The following example shows one CPU 1516-3 PN/DP and two interface modules IM
155-6 PN HF that are interconnected in a ring in the topology view of STEP 7.
Figure 5-35 Configuring media redundancy
2. Select the PROFINET IO system in the network view.
3. In the Inspector window, navigate to "Properties" > "General" > "PROFINET" > "MRP
domains" in the "Ring interconnections" field.
This field shows you all the topological rings in the IO system with the associated MRP
domains.
4. Select the ring generated above in the "Ring interconnections" field.
The table below it shows all the PROFINET devices in the ring.
5. Set the media redundancy role for the PROFINET devices in the MRP role column.
Figure 5-36 MRP domain
Automatic MRP configuration
You can also have the media redundancy roles assigned automatically for your PROFINET
devices in the ring.
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