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Siemens SIMATIC ET 200AL System Manual page 1748

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The figure below shows the display of the redundancy levels in STEP 7 for the example
configuration.
Figure 5-41
PROFINET with STEP 7
Function Manual, 05/2021, A5E03444486-AL
Display of the redundancy levels in STEP 7
5.4 Media redundancy (ring topologies)
Functions
183
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