IEC 61158-5-28:2023

Industrial communication networks - Fieldbus specifications - Part 5-28: Application layer service definition - Type 28 elements

IEC 61558-5-28:2023 provides common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment and material specific to Type 28 fieldbus. The term "time-critical" is used to represent the presence of a time-window, in which one or more specified actions are required to be completed with some defined level of certainty.

Réseaux de communication industriels – Spécifications des bus de terrain – Partie 5‑28: Définition des services de la couche application – Éléments de type 28

L'IEC 61558-5-28:2023 donne les éléments communs visant à assurer les communications de messagerie de base prioritaires et non prioritaires entre les programmes d’application d’un environnement d’automatisation et d’un matériel spécifique au bus de terrain de type 28. Le terme "prioritaire" est utilisé pour indiquer la présence d’une fenêtre temporelle, dans laquelle il est exigé de réaliser une ou plusieurs actions spécifiées selon un niveau défini de certitude.

General Information

• Status: Published
• Publication Date: 09-Mar-2023
• ICS: 25.040 - Industrial automation systems
• Technical Committee: SC 65C - Industrial networks
• Drafting Committee: WG 9 - TC 65/SC 65C/WG 9
• Current Stage: PPUB - Publication issued
• Start Date: 31-Mar-2023
• Completion Date: 10-Mar-2023

Standards Content (Sample)

IEC 61158-5-28
®

Edition 1.0 2023-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial communication networks –Fieldbus specifications –
Part 5-28: Application layer service definition – Type 28 elements

Réseaux de communication industriels – Spécifications des bus de terrain –
Partie 5-28: Définition des services de la couche application –
Éléments de type 28

IEC 61158-5-28:2023-03(en-fr)

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IEC 61158-5-28

®


Edition 1.0 2023-03




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE











Industrial communication networks –Fieldbus specifications –

Part 5-28: Application layer service definition – Type 28 elements



Réseaux de communication industriels – Spécifications des bus de terrain –

Partie 5-28: Définition des services de la couche application –

Éléments de type 28















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 25.040 ISBN 978-2-8322-6583-3




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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– 2 – IEC 61158-5-28:2023 © IEC 2023
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
1.1 Overview. 8
1.2 Specifications . 9
1.3 Conformance . 9
2 Normative references . 9
3 Terms, definitions, symbols, abbreviated terms and conventions . 10
3.1 Referenced terms and definitions . 10
3.1.1 ISO/IEC 7498-1 terms . 10
3.1.2 ISO/IEC 8822 terms . 10
3.1.3 ISO/IEC 9545 terms . 11
3.1.4 ISO/IEC 8824 terms . 11
3.2 Additional terms and definitions for this IEC 61158-5-28 . 11
3.3 Abbreviations and symbols . 12
3.4 Conventions . 13
3.4.1 Overview . 13
3.4.2 Conventions for class definitions . 13
3.4.3 Conventions for service definitions . 14
4 Concepts . 15
5 Data type ASE . 15
5.1 General . 15
5.1.1 Overview . 15
5.1.2 Overview of basic types . 16
5.1.3 Overview of fixed-length types . 16
5.1.4 Overview of constructed types . 17
5.2 AL defined data types . 17
5.2.1 Fixed length types . 17
5.2.2 String type . 19
5.2.3 Structure type . 20
6 Type 28 communication model specification . 25
6.1 General . 25
6.2 Protocol stack for Type 28 fieldbus . 26
6.3 Data mapping modelling. 27
6.4 Overview of Type 28 communication model . 29
6.4.1 General . 29
6.4.2 P/S . 29
6.4.3 C/S . 30
6.5 AL related management information table . 30
6.5.1 General . 30
6.5.2 Time management information table . 31
6.5.3 Network management information table . 32
6.6 ASEs . 33
6.6.1 Overview . 33
6.6.2 RT data ASE. 34
6.6.3 nRT data ASE . 36

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IEC 61158-5-28:2023 © IEC 2023 – 3 –
6.6.4 Time ASE . 38
6.6.5 Resource ASE . 41
6.6.6 Addressing ASE . 43
6.6.7 Management ASE . 48
6.6.8 Virtualization ASE . 55
6.7 Application service . 58
6.7.1 Overview . 58
6.7.2 Read service . 58
6.7.3 Write service . 58
Annex A (informative)  Example of service data mapping DTU message . 60
Annex B (informative)  Example of OPC UA data model and Type 28 data model
mapping . 61
Annex C (informative)  Example of RTA service processing . 62
Annex D (informative)  Type 28 virtualization solution example . 63
Bibliography . 66

Figure 1 – Data type class hierarchy example . 16
Figure 2 – BITMAP data type . 20
Figure 3 – AL in fieldbus protocol stack architecture . 26
Figure 4 – Type 28 AL protocol architecture . 26
Figure 5 – Data mapping modelling object structure . 27
Figure 6 – Diagram of mapping data buffers and service data variables . 28
Figure 7 – Diagram of P/S model . 29
Figure 8 – P/S model of PUSH mode . 30
Figure 9 – P/S model of PULL mode . 30
Figure 10 – Diagram of C/S communication model . 30
Figure 11 – RT data transmission model . 35
Figure 12 – Diagram of nRT data request response model . 37
Figure 13 – Diagram of nRT data AP interaction based on C/S communication model . 38
Figure 14 – Diagram of nRT data AP interaction based on P/S communication model . 38
Figure 15 – Time synchronization application interaction process . 40
Figure 16 – Time query process . 41
Figure 17 – Resource AP interaction based on C/S communication model . 43
Figure 18 – Resource ASE local service function diagram . 43
Figure 19 – NETWORKID identification field structure . 44
Figure 20 – NETWORKID interaction process diagram . 46
Figure 21 – Diagram of MAC mapping table service function. 46
Figure 22 – IP mapping table service function diagram . 47
Figure 23 – Type 28 AL data message mapped to IP payload data payload . 47
Figure 24 – Type 28 AL protocol header and IP protocol header mapping . 48
Figure 25 – IP data message is mapped to valid data of Type 28 AL data message . 48
Figure 26 – Static configuration initialization process . 51
Figure 27 – Join the network interaction process . 52
Figure 28 – Passively exit the network interaction process . 53

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– 4 – IEC 61158-5-28:2023 © IEC 2023
Figure 29 – Actively exit network interaction process . 54
Figure 30 – Diagram of diagnostic object mapping . 54
Figure 31 – Diagram of the logging process . 55
Figure 32 – A physical bus divided into two virtual bus domain diagrams . 56
Figure 33 – Diagram of virtualized AP interaction based on C/S communication model . 57
Figure 34 – Virtualization ASE local implementation diagram . 58
Figure A.1 – Data transmission unit message content example . 60
Figure B.1 – OPC UA data model and mapping of Type 28 data model . 61
Figure C.1 – Example of RTA service processing . 62
Figure D.1 – Diagram of Type 28 industrial bus service deployment . 63
Figure D.2 – Diagram of networking topology based on the virtualized bus . 63
Figure D.3 – Virtual network topology based on logical business function RT1 . 64

Table 1 – TIMEV type data coding . 17
Table 2 – TIMEDATE type coding . 18
Table 3 – TIMEOFDAY type coding . 18
Table 4 – TIMEDIFFER type coding . 19
Table 5 – VISIBLESTRING type data coding . 19
Table 6 – Description of time information structure TIMEINFO_S . 20
Table 7 – Description of clock option information structure CLOCK_OPTION_INFO_S . 21
Table 8 – Description of network configuration parameter structure
NETWORK_CFG_PARA_S . 22
Table 9 – Description of MAC mapping table NETWORKID_MAC_MAP_TABLE_S . 23
Table 10 – Description of IP mapping table structure IP_MAP_TABLE_S . 24
Table 11 – Service data mapping table parameter list . 29
Table 12 – Time management information table . 31
Table 13 – Network management information table . 32
Table 14 – Communication models supported by Type 28 AL ASEs . 33
Table 15 – Application service interface return value list . 33
Table 16 – RT data service interface parameters . 34
Table 17 – nRT data service interface parameters . 36
Table 18 – Timing service interface parameters . 39
Table 19 – Resource service interface parameters . 42
Table 20 – Addressing service interface parameters . 45
Table 21 – Management service interface parameters . 49
Table 22 – Virtual service interface parameters . 56
Table 23 – Read service parameters . 58
Table 24 – Write service parameters . 59
Table 25 – Application service errcode . 59
Table D.1 – Virtual bus environment node NETWORKID list . 65

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IEC 61158-5-28:2023 © IEC 2023 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –

Part 5-28: Application layer service definition –
Type 28 elements

FOREWORD
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NOTE Combinations of protocol types are specified in the IEC 61784-1 series and the IEC 61784-2 series.
IEC 61158-5-28 has been prepared by subcommittee 65C: Industrial networks, of IEC technical
committee 65: Industrial-process measurement, control and automation. It is an International
Standard.

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– 6 – IEC 61158-5-28:2023 © IEC 2023
The text of this International Standard is based on the following documents:
Draft Report on voting
65C/1206/FDIS 65C/1235/RVD

Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts of the IEC 61158 series, published 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 document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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IEC 61158-5-28:2023 © IEC 2023 – 7 –
INTRODUCTION
This document 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.
The application service is provided by the application protocol making use of the services
available from the data-link or other immediately lower layer. This document defines the
application service characteristics that fieldbus applications and/or system management can
exploit.
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 application layer service defined in this document is a conceptual architectural service,
independent of administrative and implementation divisions.

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– 8 – IEC 61158-5-28:2023 © IEC 2023
INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –

Part 5-28: Application layer service definition –
Type 28 elements



1 Scope
1.1 Overview
The fieldbus Application Layer (FAL) provides user programs with a means to access the
fieldbus communication environment. In this respect, the FAL can be considered as a window
between corresponding application programs.
This part of IEC 61158 provides common elements for basic time-critical and non-time-critical
messaging communications between application programs in an automation environment and
material specific to Type 28 fieldbus. The term "time-critical" is used to represent the presence
of a time-window, in which one or more specified actions are required to be completed with
some defined level of certainty.
This document defines in an abstract way the externally visible service provided by the different
Types of the fieldbus Application Layer in terms of
• an abstract model for defining application resources (objects) capable of being manipulated
by users via the use of the FAL service,
• the primitive actions and events of the service,
• the parameters associated with each primitive action and event, and the form which they
take, and
• the interrelationship between these actions and events, and their valid sequences.
The purpose of this document is to define the services provided to
• the FAL user at the boundary between the user and the Application Layer of the Fieldbus
Reference Model, and
• Systems Management at the boundary between the Application Layer and Systems
Management of the Fieldbus Reference Model.
This document specifies the structure and services of the IEC fieldbus Application Layer, in
conformance with the OSI Basic Reference Model (ISO/IEC 7498-1) and the OSI Application
Layer Structure (ISO/IEC 9545).
FAL services and protocols are provided by FAL application-entities (AE) contained within the
application processes.
...