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The "S7-REDCONNECT" software package is required for fault-tolerant communication on a
PC. S7-REDCONNECT supports the connection of a PC to a fiber-optic network with one
CP, or to a redundant bus system with 2 CPs. Always use the latest version of this software.
Only Industrial Ethernet is supported for connecting PC systems. The SIMATIC Net software
V 8.1.2 is required for connection via ISOonTCP. This corresponds to the configuration
TCP/RFC1006 at the PC end.
Note
The PROFINET IO MRP (Media Redundancy Protocol) for PROFINET IO ring topologies is
not supported by SIMATIC NET PC modules. Plant buses as duplex fiber-optic rings cannot
be operated with MRP.
Configuring connections
The PC must be engineered and configured as a SIMATIC PC station. Additional
configuration of fault-tolerant communication is not necessary at the PC end. The connection
configuration is uploaded from the STEP 7 project to the PC station.
You can find out how to use STEP 7 to integrate fault-tolerant S7 communication for a PC
into your OS system in the WinCC documentation.
Figure 16-19 Example of redundancy with fault-tolerant system and redundant bus system
CPU 410-5H Process Automation/CPU 410 SMART
System Manual, 10/2013, A5E32631667-AA
16.10 Communication via fault-tolerant S7 connections
Supplementary information
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