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Project

Reference EN 62439-4:2010/A1:2012
Title Industrial communication networks - High availability automation networks - Part 4: Cross-network Redundancy Protocol (CRP)
Project Number 23218
Abstract/Scope IEC 62439-4:2010(E) is applicable to high-availability automation networks based on the ISO/IEC 8802-3 (IEEE 802.3) (Ethernet) technology. It specifies a redundancy protocol that is based on the duplication of the network, the redundancy protocol being executed within the end nodes, as opposed to a redundancy protocol built in the switches. The switchover decision is taken in each node individually. The cross-network connection capability enables single attached end nodes to be connected on either of the two networks. It cancels and replaces IEC 62439 published in 2008 and constitutes a technical revision. It includes the following significant technical changes with respect to IEC 62439 (2008): - adding a calculation method for RSTP (rapid spanning tree protocol, IEEE 802.1Q), - adding two new redundancy protocols: HSR (High-availability Seamless Redundancy) and DRP (Distributed Redundancy Protocol), - moving former Clauses 1 to 4 (introduction, definitions, general aspects) and the Annexes (taxonomy, availability calculation) to IEC 62439-1, which serves now as a base for the other documents, - moving Clause 5 (MRP) to IEC 62439-2 with minor editorial changes, - moving Clause 6 (PRP) was to IEC 62439-3 with minor editorial changes, - moving Clause 7 (CRP) was to IEC 62439-4 with minor editorial changes, and - moving Clause 8 (BRP) was to IEC 62439-5 with minor editorial changes, - adding a method to calculate the maximum recovery time of RSTP in a restricted configuration (ring) to IEC 62439-1 as Clause 8, - adding specifications of the HSR (High-availability Seamless Redundancy) protocol, which shares the principles of PRP to IEC 62439-3 as Clause 5, and - introducing the DRP protocol as IEC 62439-6.
Status
Published

Status

Current Stage code 6060
Current Stage code date 2012-04-13
Current Stage code deadline 2012-12-30
Deadline date for vote  

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Order Voucher  

Details

IEC Technical Body IEC/SC 65C
Reference Document IEC 62439-4:2010/A1:2012 (EQV)
ICS 25.040 - Industrial automation systems
35.040 - Character sets and information coding
Keywords Communication; Network; Automation; Cross-network; Redundancy protocol
Note 2012-03-09: Publication editing allocated to svandriessche@cencenelec.eu
A-Deviation(s)  
Special National Condition(s)  

Environment

Clause
Categories - Aspects
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Information

History

Stage
Date
Deadline Date
Documents
6060 2012-04-13 2012-12-30 export to doc file  EN  FR  DE
5099 2012-03-30 2012-04-27  
5060 2012-01-31 2012-02-21 export to doc file  EN
5020 2011-11-25 2012-01-27  
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) 2012-03-30
date of Availability (DAV) (2) 2012-04-13
date of Announcement (DOA) (3) 2012-06-30
date of Publication (DOP) (4) 2012-12-30
date of Withdrawal (DOW) (5) 2015-03-30

Relations

Supersedes  
Superseded by  
Normative reference (6)  

(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.