This connection contains four routes internally from which the first is activated in operation.
The second route is a reserve and it automatically takes on the active role in the event of a
fault. The third and fourth routes are dismantled at the beginning.
Fault-tolerant communication (2-way or 4-way)
A "S7 connection fault-tolerant" is always used for communication between fault-tolerant
systems. The following connection partners are possible:
● For a simple plant bus:
– Standard AS with CPU 41xH, and 1x CP 443-1 if required
– H system with 2x CP 443-1
– PC station with C16xx
● For a redundant plant bus
– Standard AS with CPU 41xH, and 2x CP 443-1 if required
– H system with 2x or 4x CP 443-1
– PC station with 2x CP16xx
Configuration of the network connections
7.2 Configuration of the connections
Compendium Part A - Configuration Guidelines (V8.2)
146 Configuration Manual, 08/2016, A5E38166869-AA
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