Grounding the mounting rail
1. Strip insulation from the grounding cable.
2. Attach the grounding cable securely to the mounting rail.
Recommendation: To connect the grounding cable in the explosion-prone area and in the
safe area, select the following connectors: Connection terminal or cable lug
3. Attach the other end to the functional earth FE.
Additional information
Section "Article numbers (accessories / spare parts) (Page 181)"
7.8 Communication via PROFINET
7.8.1 Connecting the CFU to the PROFINET IO
The following possibilities are available for connecting the CFU to the PROFINET IO:
● Connect cable to BusAdapter with plug connector:
– PROFINET cable with RJ45-BusAdapter
– Fiber-optic connection with LC BusAdapter
● Connect a FastConnect cable directly to the BusAdapter
● Direct cable connection in the case of:
– BusAdapter with FastConnect connection
– Variable Distance BusAdapter
Additional information
● Basics for PROFINET (Page 189)
● You can find additional information on approved BusAdapters in section "Article numbers
(accessories / spare parts) (Page 181)".
● Information about installing the BusAdapters is available in the documentation
Industrial
Ethernet / PROFINET Passive Network Components.
You can find this documentation on the Internet under http://support.industry.siemens.com/
cs/ww/de/view/84922825 (http://support.industry.siemens.com/cs/ww/en/view/84922825).
Connecting
7.8 Communication via PROFINET
SIMATIC CFU
66 Commissioning Manual, 08/2019, A5E39252870-AD
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