Industrial communication networks - Fieldbus specifications - Part 6-20: Application layer protocol specification - Type 20 elements

IEC 61158-6-20:2010(E) specifies the protocol of the Type 20 fieldbus application layer, in conformance with the OSI Basic Reference Model (ISO/IEC 7498-1) and the OSI application layer structure (ISO/IEC 9545). It defines the protocol provided to define the wire-representation of the service primitives defined in IEC 61158-5-20:2010, and the externally visible behavior associated with their transfer. This second edition cancels and replaces the first edition published in 2007 and constitutes a technical revision. The main changes with respect to the previous edition are: revised Identify FAL PDU, see 5.3.2 and revised Read device variables with status FAL PDU, see 5.3.9.

Industrielle Kommunikationsnetze - Feldbusse - Teil 6-20: Protokollspezifikation des Application Layer (Anwendungsschicht) - Typ 20-Elemente

Réseaux de communication industriels - Spécifications des bus de terrain - Partie 6-20: Spécification des protocoles des couches d'application - Eléments de type 20

Industrijska komunikacijska omrežja - Specifikacije za procesno vodilo - 6-20. del: Specifikacija protokola na aplikacijskem nivoju - Elementi tipa 20 (IEC 61158-6-20:2010)

Aplikacijski nivo procesnih vodil (FAL) omogoča uporabniškim programom dostop do komunikacijskega okolja procesnih vodil. Glede na to je mogoče aplikacijski nivo procesnih vodil šteti za »okno med ustreznimi aplikacijami«. Ta standard določa skupne elemente za osnovne časovno kritične in časovno nekritične sporočilne komunikacije med aplikacijami v avtomatizacijskem okolju in material, specifičen za procesna vodila tipa 20. 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 zunanje vidno vedenje, ki ga zagotavlja aplikacijski nivo procesnih vodil tipa 20 v zvezi z a) abstraktno sintakso, ki opredeljuje podatkovne enote protokola aplikacijskega nivoja, ki se prenašajo med aplikacijskimi osebki, ki komunicirajo, b) prenosno sintakso, ki opredeljuje podatkovne enote protokola aplikacijskega nivoja, ki se prenašajo med aplikacijskimi osebki, ki komunicirajo, c) strojem stanj aplikacijskega konteksta, ki opredeljuje vedenje aplikacijskega opravila, vidnega med aplikacijskimi osebki, ki komunicirajo, in d) stroji stanj aplikacijskega razmerja, ki opredeljujejo komunikacijsko vedenje med aplikacijskimi osebki, ki komunicirajo. Namen tega standarda je opredeliti protokol za določitev a) žične predstavitve primitivov opravil iz standarda IEC 61158-5-20 in b) zunanje vidnega vedenja, povezanega z njihovim prenosom. Ta standard določa protokol aplikacijskega nivoja procesnih vodil IEC tipa 20 v skladu z osnovnim referenčnim modelom OSI (ISO/IEC 7498) in strukturo aplikacijskega nivoja OSI (ISO/IEC 9545).

General Information

Status
Withdrawn
Publication Date
21-Jun-2012
Withdrawal Date
27-Mar-2015
Current Stage
9960 - Withdrawal effective - Withdrawal
Start Date
23-Sep-2017
Completion Date
23-Sep-2017

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SLOVENSKI STANDARD
01-september-2012
1DGRPHãþD
SIST EN 61158-6-20:2008
Industrijska komunikacijska omrežja - Specifikacije za procesno vodilo - 6-20. del:
Specifikacija protokola na aplikacijskem nivoju - Elementi tipa 20 (IEC 61158-6-
20:2010)
Industrial communication networks - Fieldbus specifications - Part 6-20: Application layer
protocol specification - Type 20 elements (IEC 61158-6-20:2010)
Industrielle Kommunikationsnetze - Feldbusse - Teil 6-20: Protokollspezifikation des
Application Layer (Anwendungsschicht) - Typ 20-Elemente (IEC 61158-6-20:2010)
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 6-20:
Spécification des protocoles des couches d'application - Eléments de type 20 (CEI
61158-6-20:2010)
Ta slovenski standard je istoveten z: EN 61158-6-20:2012
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.100.70 Uporabniški sloj Application layer
35.110 Omreževanje Networking
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61158-6-20
NORME EUROPÉENNE
June 2012
EUROPÄISCHE NORM
ICS 25.040.40; 35.100.70; 35.110 Supersedes EN 61158-6-20:2008

English version
Industrial communication networks -
Fieldbus specifications -
Part 6-20: Application layer protocol specification -
Type 20 elements
(IEC 61158-6-20:2010)
Réseaux de communication industriels -  Industrielle Kommunikationsnetze -
Spécifications des bus de terrain - Feldbusse -
Partie 6-20: Spécification des protocoles Teil 6-20: Protokollspezifikation des
des couches d'application - Application Layer (Anwendungsschicht) -
Eléments de type 20 Typ 20-Elemente
(CEI 61158-6-20:2010) (IEC 61158-6-20:2010)

This European Standard was approved by CENELEC on 2012-03-28. 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, 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.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61158-6-20:2012 E
Foreword
The text of document 65C/607/FDIS, future edition 2 of IEC 61158-6-20, 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 61158-6-20:2012.

The following dates are fixed:
(dop) 2012-12-28
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2015-03-28

standards conflicting with the
document have to be withdrawn
This document supersedes EN 61158-6-20:2008.
20:2008:
— revised Identify FAL PDU, see 5.3.2;
— revised Read device variables with status FAL PDU, see 5.3.9.
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.
Endorsement notice
The text of the International Standard IEC 61158-6-20:2010 was approved by CENELEC as a European
Standard without any modification.

- 3 - EN 61158-6-20:2012
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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 60559 - Binary floating-point arithmetic for HD 592 S1 -
microprocessor systems
IEC/TR 61158-1 2010 Industrial communication networks - CLC/TR 61158-1 2010
Fieldbus specifications -
Part 1: Overview and guidance for the IEC
61158 and IEC 61784 series
IEC 61158-5-20 - Industrial communication networks - EN 61158-5-20 -
Fieldbus specifications -
Part 5-20: Application layer service definition -
Type 20 elements
ISO/IEC 7498-1 - Information technology - Open Systems - -
Interconnection - Basic Reference Model:
The Basic Model
ISO/IEC 8824-1 - Information technology - Abstract Syntax - -
Notation One (ASN.1): Specification of basic
notation
ISO/IEC 8859-1 - Information technology - 8-bit single-byte - -
coded graphic character sets -
Part 1: Latin alphabet No.1
ISO/IEC 9545 - Information technology - Open Systems - -
Interconnection - Application Layer structure

IEC 61158-6-20 ®
Edition 2.0 2010-08
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 6-20: Application layer protocol specification – Type 20 elements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XA
ICS 25.04.40; 35.100.70; 35.110 ISBN 978-2-88912-134-2
– 2 – 61158-6-20 © IEC:2010(E)
CONTENTS
FOREWORD.5
INTRODUCTION.7
1 Scope.8
1.1 General .8
1.2 Specifications.8
1.3 Conformance.9
2 Normative references .9
3 Terms, definitions, symbols, abbreviations and conventions .10
3.1 Terms and definitions from other ISO/IEC standards .10
3.2 IEC/TR 61158-1 terms.10
3.3 Type 20 fieldbus application-layer specific definitions.13
3.4 Abbreviations and symbols.15
3.5 Conventions .16
3.6 Conventions used in state machines .16
4 Abstract syntax.17
5 Transfer syntax .17
5.1 General .17
5.2 Common APDU structure .18
5.3 Service-specific APDU structures .20
5.4 Data coding rules .35
6 Structure of FAL protocol state machines .41
7 AP-context state machines .42
8 FAL service protocol machine (FSPM).42
8.1 General .42
8.2 FSPM state tables .43
8.3 Functions used by FSPM.48
8.4 Parameters of FSPM/ARPM primitives .48
9 Application relationship protocol machines (ARPMs) .49
9.1 AREP mapping to data link layer .49
9.2 Application relationship protocol machines (ARPMs) .50
9.3 AREP state machine primitive definitions .52
9.4 AREP state machine functions .52
10 DLL mapping protocol machine (DMPM).52
10.1 DMPM states.52
10.2 DMPM state machines.53
10.3 Primitives exchanged between data link layer and DMPM .53
10.4 Functions used by DMPM.54
Bibliography.55

Figure 1 – APDU format.18
Figure 2 – Normal response from slave to master .18
Figure 3 – Command error response from slave to master .19
Figure 4 – Communication error response from slave to master.20
Figure 5 – Coding without identification .36
Figure 6 – Coding of Integer type data .36

61158-6-20 © IEC:2010(E) – 3 –
Figure 7 – Coding of Integer16 type data .36
Figure 8 – Coding of Unsigned type data .36
Figure 9 – Coding of Unsigned16 type data .36
Figure 10 – Coding of single precision Floating Point type data .37
Figure 11 – Coding of double precision Floating Point type data .38
Figure 12 – Coding of Date type data.38
Figure 13 – Relationships among protocol machines and adjacent layers .42
Figure 14 – State transition diagram of FSPM.43
Figure 15 – State transition diagram of the client ARPM .50
Figure 16 – State transition diagram of the server ARPM .51
Figure 17 – State transition diagram of DMPM .53

Table 1 – Conventions used for state machines .16
Table 2 – Response code values .19
Table 3 – Device status values .19
Table 4 – Response code values .20
Table 5 – Communication error codes.20
Table 6 – Identify request APDU.21
Table 7 – Identify response value field.22
Table 8 – Identify command specific response codes.22
Table 9 – Read primary variable response value field .
...

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