SIST EN 61158-3-24:2015
(Main)Industrial communication networks - Fieldbus specifications - Part 3-24: Data-link layer service definition - Type-24 elements (IEC 61158-3-24:2014)
Industrial communication networks - Fieldbus specifications - Part 3-24: Data-link layer service definition - Type-24 elements (IEC 61158-3-24:2014)
1 Scope
1.1 General
This part of IEC 61158 provides common elements for basic time-critical messaging
communications between devices in an automation environment. The term “time-critical” is
used to represent the presence of a time-window, within which one or more specified actions
are required to be completed with some defined level of certainty. Failure to complete
specified actions within the time-window risks failure of the applications requesting the actions,
with attendant risk to equipment, plant and possibly human life.
This standard defines in an abstract way the externally visible service provided by the Type
24 fieldbus data-link layer in terms of
a) the primitive actions and events of the service;
b) the interrelationship between these actions and events, and their valid sequences;
c) the parameters associated with each primitive action and event, and the form which they
take.
The purpose of this standard is to define the services provided to
– the Type 24 fieldbus application layer at the boundary between the application and datalink
layers of the fieldbus reference model;
– systems management at the boundary between the data-link layer and systems
management of the fieldbus reference model.
1.2 Specifications
The principal objective of this standard is to specify the characteristics of conceptual data-link
layer services suitable for time-critical communications, and thus supplement the OSI Basic
Reference Model in guiding the development of data-link protocols for time-critical
communications. A secondary objective is to provide migration paths from previously-existing
industrial communications protocols.
This specification may be used as the basis for formal DL-Programming-Interfaces.
Nevertheless, it is not a formal programming interface, and any such interface will need to
address implementation issues not covered by this specification, including
a) the sizes and octet ordering of various multi-octet service parameters, and
b) the correlation of paired request and confirm, or indication and response, primitives.
1.3 Conformance
This standard does not specify individual implementations or products, nor does it constrain
the implementations of data-link entities within industrial automation systems.
There is no conformance of equipment to this data-link layer service definition standard.
Instead, conformance is achieved through implementation of the corresponding data-link
protocol that fulfills the Type 24 data-link layer services defined in this standard.
Industrielle Kommunikationsnetze - Feldbusse - Teil 3-24: Dienstfestlegungen des Data Link Layer (Sicherungsschicht) - Typ 24-Elemente (IEC 61158-3-24:2014)
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 3-24: Définition des services de la couche liaison de données - Éléments de type 24 (CEI 61158-3-24:2014)
L'IEC 61158-3-24:2014 définit les services fournis à la couche application de bus de terrain Type 24 au niveau de la frontière entre les couches application et liaison de données du modèle de référence de bus de terrain et à la gestion des systèmes au niveau de la frontière entre la couche liaison de données et la gestion des systèmes selon le modèle de référence de bus de terrain.
Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 3-24. del: Specifikacija protokola na ravni podatkovnih povezav - Elementi tipa 24 (IEC 61158-3-24:2014)
1.1 Splošno
Ta del standarda IEC 61158 določa skupne elemente za osnovne časovno kritične sporočilne komunikacije med napravami v avtomatizacijskem okolju. Izraz »časovno kritičen« se uporablja za predstavitev prisotnosti časovnega okna, v okviru katerega se zahteva dokončanje enega ali več opredeljenih dejanj z določeno stopnjo gotovosti. Zaradi neuspešnega dokončanja opredeljenih dejanj v časovnem oknu je možna odpoved aplikacij, ki zahtevajo dejanja, pri čemer so ogroženi oprema, obrat in morda človeška življenja.
Ta standard na abstrakten način določa na zunaj vidno opravilo, ki ga zagotavlja podatkovna povezovalna raven procesnih vodil tipa 24 v smislu
a) preprostih dejanj in dogodkov opravila;
b) medsebojnih povezav med temi dejanji in dogodki ter njihovimi veljavnimi zaporedji;
c) parametrov, povezanih z vsakim preprostim dejanjem in dogodkom, ter obliko, ki jo prevzamejo.
Namen tega standarda je določiti opravila, ki se zagotavljajo za
– aplikacijsko raven procesnih vodil tipa 24 na meji med aplikacijo in podatkovno povezovalno ravnjo referenčnega modela procesnega vodila;
– upravljanje sistemov na meji med podatkovno povezovalno ravnjo in upravljanjem sistemov referenčnega modela procesnega vodila.
1.2 Specifikacije
Glavni cilj tega standarda je določiti značilnosti konceptualnih opravil nivoja podatkovnih povezav, primernih za časovno kritične komunikacije, ter tako dopolniti osnovni referenčni model OSI pri usmerjanju razvoja protokolov časovnih povezav za časovno kritične komunikacije. Drugotni cilj je zagotoviti načrte prehoda iz predhodno obstoječih industrijskih komunikacijskih protokolov.
Ta specifikacija se lahko uporablja kot podlaga za formalne programske vmesnike podatkovne povezave. Vseeno ne gre za formalni programski vmesnik, pri čemer mora vsak tak vmesnik obravnavati izvedbena vprašanja, ki jih ta specifikacija ne zajema, vključno z:
a) velikostmi in oktetnim naročanjem različnih večoktetnih parametrov opravil;
b) korelacijo parnih primitivov za zahtevo in potrjevanje ali navedbo in odziv.
1.3 Skladnost
Ta standard ne določa posameznih implementacij ali izdelkov ter ne omejuje implementacije entitet podatkovnih povezav v okviru sistemov za industrijsko avtomatizacijo.
Ta oprema ni skladna s standardom za specifikacijo protokola na ravni podatkovnih povezav. Skladnost se doseže prek implementacije ustreznega protokola podatkovnih povezav, ki izpolnjuje storitve ravni podatkovnih povezav tipa 24, ki je določen v tem standardu.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 61158-3-24:2015
01-marec-2015
Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 3-24. del:
Specifikacija protokola na ravni podatkovnih povezav - Elementi tipa 24 (IEC 61158
-3-24:2014)
Industrial communication networks - Fieldbus specifications - Part 3-24: Data-link layer
service definition - Type-24 elements (IEC 61158-3-24:2014)
Industrielle Kommunikationsnetze - Feldbusse - Teil 3-24: Dienstfestlegungen des Data
Link Layer (Sicherungsschicht) - Typ 24-Elemente (IEC 61158-3-24:2014)
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 3-24:
Définition des services de la couche liaison de données - Éléments de type 24 (CEI
61158-3-24:2014)
Ta slovenski standard je istoveten z: EN 61158-3-24:2014
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.100.20 Podatkovni povezovalni sloj Data link layer
35.110 Omreževanje Networking
SIST EN 61158-3-24:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 61158-3-24:2015
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SIST EN 61158-3-24:2015
EUROPEAN STANDARD EN 61158-3-24
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2014
ICS 25.040.40; 35.100.20; 35.110
English Version
Industrial communication networks - Fieldbus specifications -
Part 3-24: Data-link layer service definition - Type-24 elements
(IEC 61158-3-24:2014)
Réseaux de communication industriels - Spécifications des Industrielle Kommunikationsnetze - Feldbusse - Teil 3-24:
bus de terrain - Partie 3-24: Définition des services de la Dienstfestlegungen des Data Link Layer
couche liaison de données - Éléments de type 24 (Sicherungsschicht) - Typ 24-Elemente
(CEI 61158-3-24:2014) (IEC 61158-3-24:2014)
This European Standard was approved by CENELEC on 2014-09-17. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61158-3-24:2014 E
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SIST EN 61158-3-24:2015
EN 61158-3-24:2014 - 2 -
Foreword
The text of document 65C/759/FDIS, future edition 1 of IEC 61158-3-24, prepared by SC 65C
"Industrial networks" of IEC/TC 65 "Industrial-process measurement, control and automation" was
submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61158-3-24:2014.
The following dates are fixed:
(dop) 2015-06-17
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2017-09-17
• latest date by which the national standards conflicting with
the document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association.
Endorsement notice
The text of the International Standard IEC 61158-3-24:2014 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 61158-1 NOTE Harmonized as EN 61158-1.
IEC 61784-1 NOTE Harmonized as EN 61784-1.
IEC 61784-2 NOTE Harmonized as EN 61784-2.
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SIST EN 61158-3-24:2015
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Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is
available here: www.cenelec.eu.
Publication Year Title EN/HD Year
ISO/IEC 7498-1 - Information technology - Open Systems - -
Interconnection - Basic Reference Model:
The Basic Model
ISO/IEC 7498-3 - Information technology - Open Systems - -
Interconnection - Basic Reference Model:
Naming and addressing
ISO/IEC 10731 - Information technology - Open Systems - -
Interconnection - Basic Reference Model -
Conventions for the definition of OSI
services
ISO/IEC 19501 2005 Information technology - Open Distributed - -
Processing - Unified Modeling Language
(UML)
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SIST EN 61158-3-24:2015
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SIST EN 61158-3-24:2015
IEC 61158-3-24
®
Edition 1.0 2014-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Fieldbus specifications –
Part 3-24: Data-link layer service definition – Type-24 elements
Réseaux de communication industriels – Spécifications des bus de terrain –
Partie 3-24: Définition des services de la couche liaison de données – Éléments
de type 24
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX W
ICS 25.040.40; 35.100.20; 35.110 ISBN 978-2-8322-1710-8
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN 61158-3-24:2015
– 2 – IEC 61158-3-24:2014 © IEC 2014
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
1.1 General . 7
1.2 Specifications . 7
1.3 Conformance . 7
2 Normative references . 8
3 Terms, definitions, symbols, abbreviations and conventions . 8
3.1 Reference model terms and definitions . 8
3.2 Service convention terms and definitions . 9
3.3 Additional Type 24 data-link specific definitions . 9
3.4 Common symbols and abbreviations . 12
3.5 Additional type 24 symbols and abbreviations . 12
3.6 Common conventions . 13
3.7 Additional Type 24 conventions . 14
4 Data-link service and concepts . 14
4.1 Overview . 14
4.2 DLS-user services . 15
4.3 Overview of interactions . 16
4.4 Detailed specification of services and interactions . 18
5 DL-management service . 22
5.1 Overview . 22
5.2 Overview of interactions . 23
5.3 Detailed specification of services and interactions . 25
Bibliography . 37
Figure 1 – Sequence of primitive for set data and read data service . 17
Figure 2 – Sequence of primitive for send data with acknowledge service . 17
Figure 3 – Sequence of primitive for send data with no-acknowledge service . 18
Figure 4 – Sequence of primitives for event service . 18
Figure 5 – Sequence of primitives for Reset service . 24
Figure 6 – Sequence of primitives for Set/get value service . 24
Figure 7 – Sequence of primitives for Evaluate delay service . 24
Figure 8 – Sequence of primitives for Start communication service . 25
Figure 9 – Sequence of primitives for Event and Clear error status service . 25
Table 1 – The list of DLS service primitives and parameters . 16
Table 2 – Write data primitives and parameters . 18
Table 3 – Values of result for write data service . 19
Table 4 – Read data primitives and parameters . 19
Table 5 – Values of result for read data service . 19
Table 6 – SDA primitives and parameters . 20
Table 7 – Values of result for SDA service . 20
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IEC 61158-3-24:2014 © IEC 2014 – 3 –
Table 8 – SDN primitives and parameters . 21
Table 9 – Values of result for SDN service . 21
Table 10 – Event primitives and parameters . 22
Table 11 – Values of Event_ID for event service . 22
Table 12 – The list of DLMS service primitives and parameters . 23
Table 13 – Set value primitive and parameters . 26
Table 14 – The list of parameter Var_ID of Set value request . 26
Table 15 – Data type and range of variables . 26
Table 16 – List of the values of variable Cyc_sel . 27
Table 17 – List of the values of variable Tunit . 28
Table 18 – Structure example of the each element of variable IO_Map . 28
Table 19 – Data type and range of the each element . 29
Table 20 – Values of result for Set value service . 29
Table 21 – Get value primitive and parameters . 29
Table 22 –The list of parameter Var_ID of Get value request . 30
Table 23 – Data type and range of variables . 30
Table 24 – Error factor assign . 31
Table 25 – Values of result for Get value service . 31
Table 26 – Evaluate delay primitive and parameters . 32
Table 27 – Values of result for Set value service . 32
Table 28 – Set communication mode primitives and parameters . 33
Table 29 – Range of Tunit . 34
Table 30 – Values of result for set communication mode service. 34
Table 31 – Start communication service primitives and parameter . 34
Table 32 – Values of result for start communication service . 34
Table 33 – Clear error primitive and parameters . 35
Table 34 – Values of result for clear error service . 35
Table 35 – DLM error event primitive and parameters . 36
Table 36 – Value and definition of Err_Event_ID . 36
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SIST EN 61158-3-24:2015
– 4 – IEC 61158-3-24:2014 © IEC 2014
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –
Part 3-24: Data-link layer service definition –
Type-24 elements
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
Attention is drawn to the fact that the use of the associated protocol type is restricted by its
intellectual-property-right holders. In all cases, the commitment to limited release of
intellectual-property-rights made by the holders of those rights permits a layer protocol type to
be used with other layer protocols of the same type, or in other type combinations explicitly
authorized by its intellectual-property-right holders.
NOTE Combinations of protocol types are specified in IEC 61784-1 and IEC 61784-2.
International Standard IEC 61158-3-24 has been prepared by subcommittee 65C: Industrial
networks, of IEC technical committee 65: Industrial-process measurement, control and
automation.
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SIST EN 61158-3-24:2015
IEC 61158-3-24:2014 © IEC 2014 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
65C/759/FDIS 65C/769/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all the parts of the IEC 61158 series, under the general title Industrial communication
networks – Fieldbus specifications, can be found on the IEC web site.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
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SIST EN 61158-3-24:2015
– 6 – IEC 61158-3-24:2014 © IEC 2014
INTRODUCTION
This part of IEC 61158 is one of a series produced to facilitate the interconnection of
automation system components. It is related to other standards in the set as defined by the
“three-layer” fieldbus reference model described in IEC 61158-1.
Throughout the set of fieldbus standards, the term “service” refers to the abstract capability
provided by one layer of the OSI Basic Reference Model to the layer immediately above. Thus,
the data-link layer service defined in this standard is a conceptual architectural service,
independent of administrative and implementation divisions.
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SIST EN 61158-3-24:2015
IEC 61158-3-24:2014 © IEC 2014 – 7 –
INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –
Part 3-24: Data-link layer service definition –
Type-24 elements
1 Scope
1.1 General
This part of IEC 61158 provides common elements for basic time-critical messaging
communications between devices in an automation environment. The term “time-critical” is
used to represent the presence of a time-window, within which one or more specified actions
are required to be completed with some defined level of certainty. Failure to complete
specified actions within the time-window risks failure of the applications requesting the actions,
with attendant risk to equipment, plant and possibly human life.
This standard defines in an abstract way the externally visible service provided by the Type
24 fieldbus data-link layer in terms of
a) the primitive actions and events of the service;
b) the interrelationship between these actions and events, and their valid sequences;
c) the parameters associated with each primitive action and event, and the form which they
take.
The purpose of this standard is to define the services provided to
– the Type 24 fieldbus application layer at the boundary between the application and data-
link layers of the fieldbus reference model;
– systems management at the boundary between the data-link layer and systems
management of the fieldbus reference model.
1.2 Specifications
The principal objective of this standard is to specify the characteristics of conceptual data-link
layer services suitable for time-critical communications, and thus supplement the OSI Basic
Reference Model in guiding the development of data-link protocols for time-critical
communications. A secondary objective is to provide migration paths from previously-existing
industrial communications protocols.
This specification may be used as the basis for formal DL-Programming-Interfaces.
Nevertheless, it is not a formal programming interface, and any such interface will need to
address implementation issues not covered by this specification, including
a) the sizes and octet ordering of various multi-octet service parameters, and
b) the correlation of paired request and confirm, or indication and response, primitives.
1.3 Conformance
This standard does not specify individual implementations or products, nor does it constrain
the implementations of data-link entities within industrial automation systems.
There is no conformance of equipment to this data-link layer service definition standard.
Instead, conformance is achieved through implementation of the corresponding data-link
protocol that fulfills the Type 24 data-link layer services defined in this standard.
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– 8 – IEC 61158-3-24:2014 © IEC 2014
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
NOTE All parts of the IEC 61158 series, as well as IEC 61784-1 and IEC 61784-2 are maintained simultaneously.
Cross-references to these documents within the text therefore refer to the editions as dated in this list of normative
references.
ISO/IEC 7498-1, Information technology – Open Systems Interconnection – Basic Reference
Model: The Basic Model
ISO/IEC 7498-3, Information technology – Open Systems Interconnection – Basic Reference
Model: Naming and addressing
ISO/IEC 10731, Information technology – Open Systems Interconnection – Basic Reference
Model – Conventions for the definition of OSI services
ISO/IEC 19501:2005, Information technology – Open Distributed Processing – Unified
Modeling Language (UML) Version 1.4.2
3 Terms, definitions, symbols, abbreviations and conventions
For the purposes of this document, the following terms, definitions, symbols, abbreviations
and conventions apply.
3.1 Reference model terms and definitions
This standard is based in part on the concepts developed in ISO/IEC 7498-1 and
ISO/IEC 7498-3 and makes use of the following terms defined therein.
3.1.1 acknowledgement [ISO/IEC 7498-1]
3.1.2 correspondent (N)-entities [ISO/IEC 7498-1]
correspondent DL-entities (N=2)
correspondent Ph-entities (N=1)
3.1.3 DL-address [ISO/IEC 7498-3]
3.1.4 DL-protocol [ISO/IEC 7498-1]
3.1.5 DL-protocol-data-unit [ISO/IEC 7498-1]
3.1.6 DL-service-data-unit [ISO/IEC 7498-1]
3.1.7 DLS-user [ISO/IEC 7498-1]
3.1.8 DLS-user-data [ISO/IEC 7498-1]
3.1.9 event [ISO/IEC 19501]
3.1.10 layer-management [ISO/IEC 7498-1]
3.1.11 rimitive name [ISO/IEC 7498-1]
3.1.12 reset [ISO/IEC 7498-1]
3.1.13 segmenting [ISO/IEC 7498-1]
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IEC 61158-3-24:2014 © IEC 2014 – 9 –
3.1.14 state [ISO/IEC 19501]
3.1.15 state machine [ISO/IEC 19501]
3.1.16 systems-management [ISO/IEC 7498-1]
3.1.17 transition [ISO/IEC 19501]
3.1.18 (N)-entity [ISO/IEC 7498-1]
DL-entity(N=2)
Ph-entity (N=1)
3.1.19 (N)-layer [ISO/IEC 7498-1]
DL-layer (N=2)
Ph-layer (N=1)
3.1.20 (N)-service [ISO/IEC 7498-1]
DL-service (N=2)
Ph-service (N=1)
3.1.21 (N)-service-access-point [ISO/IEC 7498-1]
DL-service-access-point (N=2)
Ph-service-access-point (N=1)
3.2 Service convention terms and definitions
This standard also makes use of the following terms defined in ISO/IEC 10731 as they apply
to the data-link layer:
3.2.1 confirm (primitive)
3.2.2 DL-service-primitive;
primitive
3.2.3 DL-service-provider
3.2.4 DL-service-user
3.2.5 indication (primitive)
3.2.6 request (primitive)
3.2.7 requestor
3.2.8 response (primitive)
3.3 Additional Type 24 data-link specific definitions
For the purposes of this standard, the following terms and definitions apply.
3.3.1
acknowledge
acknowledgement
3.3.2
acyclic transmission
non-periodic exchange of telegrams
3.3.3
C1 master
one of the station type that initiates and control cyclic transmission
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SIST EN 61158-3-24:2015
– 10 – IEC 61158-3-24:2014 © IEC 2014
3.3.4
C1 message
message communication that C1 master operates as initiator to exchange messages with
slave or C2 master
3.3.5
C2 master
one of the station type that has the function of monitoring all process data transmitted through
the network and may initiates message communication
3.3.6
C2 message
message communication that C2 master operates as initiator to exchange messages with
slave or C1 master
3.3.7
cyclic transmission
periodic exchange of telegrams
3.3.8
data
generic term used to refer to any information carried over a fieldbus
3.3.9
device
physical entity connected to the fieldbus composed of at least one communication element
(the network element) and which may have a control element and/or a final element
(transducer, actuator, etc.)
3.3.10
event driven mode
transmission mode for the application layer protocol of the communication type 24 in which a
transaction of command-response-exchanging arises as user’s demands
3.3.11
frame
synonym for DLPDU
3.3.12
initiator
station that initiates the exchange of process data or message
3.3.13
interface
shared boundary between two functional units, defined by functional characteristics, signal
characteristics, or other characteristics as appropriat
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