Properties and services
1.4 Further services and characteristics of the CP
CP 443-1 Advanced
20 Equipment Manual, 03/2023, C79000-G8976-C256-07
• Detection of double IP addressing in the network
To save you timeconsuming troubleshooting in the network, the CP detects double
addressing in the network.
The reaction of the CP when double addressing is detected varies as follows:
Characteristics of the PROFINET interface
– CP during startup
The CP remains in STOP mode.
– CP in RUN mode
There is an LED indication (BUS2F LED) and an entry in the diagnostics buffer; the CP
remains in RUN mode.
Characteristics of the gigabit interface
– CP during startup
The CP changes to RUN, the BUS1F LED is lit and the CP cannot be reached via the
gigabit interface.
– CP in RUN mode
There is an LED indication (BUS1F LED) and an entry in the diagnostics buffer; the CP
remains in RUN mode.
• Support in the fault-tolerant system (H system)
S7 communication is supported in the H system with the following protocols:
– ISO transport
– ISO-on-TCP (RFC1006)
For details, see section Use in the H system (Page 77).
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