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This document contains general concepts and calculation methods for the Parallel Redundancy Protocol (PRP) and High availability Seamless Ring (HSR). The Committee responsible for this standard is national Working Committee K 956 "Feldbus" ("Fieldbus") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE (www.dke.de).
This document replaces DIN EN 62439:2009-01 .
This document has been replaced by: DIN EN 62439-3:2013-06 .