BAS EN 62439-3:2013

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:<br /> - specification of the interconnection of PRP and HSR networks;<br /> - introduction of a suffix for PRP frames;<br /> - clarification and modification of specifications to ensure interoperability;<br /> - slackening of the specifications to allow different implementations;<br /> - consideration of clock synchronization according to IEC 61588;<br /> - introduction of test modes to simplify testing and maintenance. <br /><br />This publication is to be read in conjunction with <a href=''http://webstore.iec.ch/webstore/webstore.nsf/ArtNum_PK/43822''>IEC 62439-1:2010</a>.