Application and functions
1.4 Performance data
CP 443-5 Extended
Equipment Manual, 01/2023, C79000-G8976-C162-10
23
1.4.8 Use in faulttolerant systems
With a CP 4435 Extended, you have the following options in a faulttolerant (H) system:
• Operating faulttolerant S7 connections with communications services configured on one
partner
or
• You can implement redundant and single peripheral structures (mixed mode is also
possible).
You will find more detailed information about the possible operating and structural options in
the manual /2/ (Page 50).
If the CP 4435 Extended is used in a faulttolerant S7400H system, the following
communications services can also be used on single (nonredundant) connections:
• S7 connection (including PG functions and PG routing)
• S5compatible communication (SEND/RECEIVE interface) on FDL connections
• Forwarding time of day
tolerant systems
Note the CPU types in Table 1-1 Use with the current CPU types (Page 13) / Table 1-2 Use
with no longer available CPU types
- part 1 (Page 14) / Table 1-3 Use with no longer available
- part 2 (Page 15)
1.4.9 Other characteristics
Note on DP:
The connected DP slaves can only be assigned to and serviced by one CPU.
- no multicomputing
If you use the CiR functionality, multicomputing is not possible.
Memory reset on the CP
Memory reset on the CP
Note that when you reset the CP memory using STEP 7 or STEP 7 special diagnostics, the
configuration data on the CPU must also be deleted otherwise the data will become
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