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



Reference EN 61158-4-17:2008
Title Industrial communication networks - Fieldbus specifications - Part 4-17: Data-link layer protocol specification - Type 17 elements
Project Number 21705
Abstract/Scope It provides basic time-critical messaging communications between devices in an automation environment. This protocol provides communication opportunities to all participating data-link entities in a cyclic asynchronous manner, sequentially to each of those data-link entities, and in a synchronous manner, either cyclically or acyclically, according to a pre-established schedule. The specified protocol also provides means of changing the set of participating data-link entities and of modifying the set of scheduled communications opportunities. When the set of scheduled communications opportunities is null, the distribution of communication opportunities to the participating data-link entities is completely asynchronous. It includes the following significant changes with respect to the previous edition deletion of the former Type 6 fieldbus, and the placeholder for a Type 5 fieldbus data-link layer, for lack of market relevance; addition of new types of fieldbuses; division of this part into multiple parts numbered.


Current Stage code 6060
Current Stage code date 2008-02-29
Current Stage code deadline 2008-11-01
Deadline date for vote  


Mandate(s) M/490
Order Voucher  


IEC Technical Body IEC/SC 65C
Reference Document IEC 61158-4-17:2007 (EQV)
ICS 25.040.40 - Industrial process measurement and control
35.100.20 - Data link layer
Keywords Industrial; Communication; Network; Fieldbus; Data-link layer
Note This European Standard together with its companion parts of the EN 61158-4 subseries supersede EN 61158-4:2004.
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2008-02-29 2008-11-01 export to doc file  EN  DE
5099 2008-02-01 2008-04-01  
5060 2007-12-14 2007-12-31 export to doc file  EN
1000 2007-12-14 2007-12-31  

Implementation Dates

date of Ratification (DOR) (1) 2008-02-01
date of Availability (DAV) (2) 2008-02-29
date of Announcement (DOA) (3) 2008-05-01
date of Publication (DOP) (4) 2008-11-01
date of Withdrawal (DOW) (5) 2011-02-01


Supersedes EN 61158-4:2004
Superseded by  
Normative reference (6) IETF RFC 768:1980
IEEE 802.3ab:1999
IEEE 802.3:1998
IETF RFC 1112:1989
IETF RFC 894:1984
IETF RFC 826:1982
IETF RFC 2236:1997
IETF RFC 791:1981
IETF RFC 792:1981
ISO/IEC 7498-1:1994
ISO/IEC 8802-3:2000
ISO/IEC 10731:1994
EN 61158-3-17:2008

(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.