International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 62439-7:2012
Title Industrial communication networks - High availability automation networks - Part 7: Ring-based Redundancy Protocol (RRP)
Project Number 23216
Abstract/Scope IEC 62439-7:2011 specifies a redundancy protocol that is based on a ring topology, in which the redundancy protocol is executed at the end nodes, as opposed to being built into the switches. Each node detects link failure and link establishment using media-sensing technologies, and shares the link information with the other nodes, to guarantee fast connectivity recovery times. The nodes have equal RRP network management functions. This publication is to be read in conjunction with IEC 62439-1:2010.


Current Stage code 6060
Current Stage code date 2012-03-16
Current Stage code deadline 2012-10-20
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/SC 65C
Reference Document IEC 62439-7:2011 (EQV)
ICS 25.040 - Industrial automation systems
35.040 - Character sets and information coding
Keywords Communication; Network; Automation; Redundancy protocol; Ring-based
Note 2012-01-20 - Publication editing allocated to
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2012-03-16 2012-10-20 export to doc file  EN  FR  DE
5099 2012-01-20 2012-02-17  
5060 2011-11-21 2011-12-12 export to doc file  EN
5020 2011-09-16 2011-11-18  
3090 2011-06-24 2011-06-30  
5060 2011-04-18 2011-05-09 export to doc file  EN
5020 2010-11-12 2011-04-15  
1090 2010-11-11 2010-11-12  

Implementation Dates

date of Ratification (DOR) (1) 2012-01-20
date of Availability (DAV) (2) 2012-03-16
date of Announcement (DOA) (3) 2012-04-20
date of Publication (DOP) (4) 2012-10-20
date of Withdrawal (DOW) (5) 2015-01-20


Superseded by  
Normative reference (6) ISO/IEC 8802-3:2000
IEC 60050-191
EN 62439-1:2010

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.