Connecting
5.2 Electrical design of the CM
5.2
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, 12/2019, C79000-G8976-C578-01
SIMATIC RF166C