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PROFINET Guideline for Redundancy Planning
The availability of production plants is becoming increasingly important. While in the past production plants in the process industry required the use of highly available systems, today more and more plants in the manufacturing industry but also infrastructure projects, such as tunnels and airports, are also equipped with high availability technology in order to reduce downtimes and the associated costs.
PROFINET offers various redundancy concepts to meet the different requirements of different applications. This ranges from ring redundancy, where essentially one line is closed to form a ring, to R2 redundancy, where almost all components of the automation system are duplicated.
This guideline is aimed at system planners who would like to gain easy access to redundancy from a planning perspective. After an explanation of the basic concepts of high availability, the document describes the various PROFINET redundancy concepts. This is followed by a description of typical use cases and an explanation of the general conditions that must be observed.