Siemens SIMATIC S7-400H - Communication Via S7 Connections - One-Sided Mode

Communication
14.5 Communication via S7 connections
S7-400H
System Manual, 03/2012, A5E00267695-11
237
14.5.1 Communication via S7 connections - one-sided mode
Availability
Availability is also enhanced by using a redundant plant bus instead of a simple bus (see
image below) for communication between a fault-tolerant system and a standard system.
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Figure 14-7 Example of linking standard and fault-tolerant systems in a simple bus system