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


Industrial-process measurement, control and automation



Reference EN 62439:2008
Title High availability automation networks
Project Number 21187
Abstract/Scope IEC 62439:2008(E) is applicable to high-availability automation networks based on the ISO/IEC 8802-3 (Ethernet) technology. It specifies: - a classification scheme for network characteristics (see Annex A); - a methodology for estimating network availability (see Annex B); - a set of communication protocols that realize high availability automation networks via the use of redundancy and that can be used in a variety of applications.


Current Stage code 6060
Current Stage code date 2008-08-27
Current Stage code deadline 2009-03-01
Deadline date for vote  


Mandate(s) M/490
Order Voucher  


IEC Technical Body IEC/SC 65C
Reference Document IEC 62439:2008 (EQV)
ICS 25.040 - Industrial automation systems
35.040 - Character sets and information coding
Keywords High availability; Automation; Network
Note Superseded by EN 62439-1:2010 + EN 62439-2:2010 + EN 62439-3:2010 + EN 62439-3:2010 + EN 62439-4:2010 + EN 62439-5:2010 + EN 62439-6:2010
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2008-08-27 2009-03-01 export to doc file  EN  DE
5099 2008-06-01 2008-08-01  
5060 2008-04-14 2008-04-28 export to doc file  EN
5020 2008-02-08 2008-04-11  
3090 2007-11-16 2008-02-29  
5060 2007-09-10 2007-09-24 export to doc file  EN
5020 2007-04-06 2007-09-07  
1090 2007-04-03 2007-04-06  

Implementation Dates

date of Ratification (DOR) (1) 2008-06-01
date of Availability (DAV) (2) 2008-08-27
date of Announcement (DOA) (3) 2008-09-01
date of Publication (DOP) (4) 2009-03-01
date of Withdrawal (DOW) (5) 2011-06-01


Superseded by EN 62439-1:2010
EN 62439-2:2010
EN 62439-3:2010
EN 62439-4:2010
EN 62439-5:2010
EN 62439-6:2010
Normative reference (6) IEEE 802:2001
IEEE 1588:2008
IEEE 802.3:2005
IEEE 802.1Q:2005
IEEE 802.1D:2004
IETF RFC 791:1981
IEEE 802a:2003
IEC 60050-191:1990
EN 61158-2:2008
EN 61784-1:2008
EN 61784-2:2008
EN 61918:2008

(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.