Siemens SINAMICS DCM Manual page 473

Descriptions of functions
10.5 Communication via PROFINET IO
STEP 7 routing with CBE20
The CBE20 does not support STEP 7 routing between PROFIBUS and PROFINET IO.
Connecting the PC with the STARTER commissioning tool
You can go online with STARTER in a number of ways, which are illustrated below:
Figure 10-44 Connecting the IO supervisor
Note
SINAMICS does not support routing from PROFIBUS to PROFINET and vice versa.
Note
If a CBE20 module fails (e.g. due to a power failure) then communication with the
subsequent nodes is interrupted at this point.
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Operating Instructions, 02.2015, A5E34763375/RS-AA/001
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SINAMICS DCM DC Converter