Siemens SINAMICS S120 Function Manual page 772

Communication
10.3 Communication via PROFINET IO
STEP 7 routing with CBE20
The CBE20 does not support STEP 7 routing between PROFIBUS and PROFINET IO.
Connecting a PG/PC with the STARTER commissioning tool
To commission a Control Unit with a PG/PC using the STARTER commissioning tool, there
are the connection options PROFIBUS, PROFINET or Ethernet. Ethernet interface X127 is
intended for commissioning and diagnostics. The IP address of the Ethernet interface is set
permanently to 169.254.11.22. You require a crosslink cable to establish the connection
between the PG/PC and the Control Unit.
Communication with the controller can be established via PROFIBUS or PROFINET,
depending on the selected integrated interfaces. Examples of possible topologies are
provided in the diagram below:
Figure 10-43 Topology Ethernet/PROFINET with PG/PC
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Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
Drive functions