DANSK DS/EN 62439-3 PDF

IEC 62439-3:2012 specifies two redundancy protocols designed to provide seamless recovery in case of single failure of an inter-bridge link or bridge in the network, which are based on the same scheme: duplication of the LAN, resp. duplication of the transmitted information. This second edition cancels and replaces the first edition published in 2010. It constitutes a technical revision. The main changes with respect to the previous edition are: – specification of the interconnection of PRP and HSR networks; – introduction of a suffix for PRP frames; – clarification and modification of specifications to ensure interoperability; – slackening of the specifications to allow different implementations; – consideration of clock synchronization according to IEC 61588; – introduction of test modes to simplify testing and maintenance.