Electrical Design Of The Cm - Siemens SIMATIC RF166C Operating Instructions Manual

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5.3 Electrical design of the CM

5.3 Electrical design of the CM
Electrical isolation
In the electrical design of the communications module, electrical isolation is provided
between:
• Load voltage 2L+ and all other circuit components
• Communication interfaces (PROFIBUS) of the communication module and all other circuit
components
The following figure shows the potential relationships of the communication modules.
Figure 5-4
32
Potential relationships of the communication modules
Operating Instructions, 03/2022, C79000-G8976-C578-02
SIMATIC RF166C