Properties and services
1.4 Further services and characteristics of the CP
CP 443-1 (EX30)
18 Manual, 03/2019, C79000-G8976-C255-05
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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:
– CP during startup
The CP remains in STOP mode.
– CP in RUN mode
There is an LED indication (BUSF LED) and an entry in the diagnostics buffer; the CP
remains in RUN mode.
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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)
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