SIST EN IEC 61158-6-10:2023

Industrial communication networks - Fieldbus specifications - Part 6-10: Application layer protocol specification - Type 10 elements (IEC 61158-6-10:2023)

IEC 61158-6-10:2023 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 10 fieldbus. 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 a 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.

Industrielle Kommunikationsnetze - Feldbusse - Teil 6-10: Protokollspezifikation des Application Layer (Anwendungsschicht) - Typ 10-Elemente (IEC 61158-6-10:2023)

Réseaux de communication industriels - Spécifications des bus de terrain - Partie 6-10: Spécification du protocole de la couche liaison de données - Eléments de type 10 (IEC 61158-6-10:2023)

L'IEC 61158-6-10:2023 donne les éléments communs visant à assurer les communications de messagerie de base à temps critique et à temps non critique entre les programmes d’application d’un environnement d’automatisation et d’un matériel spécifique au bus de terrain de type 10. Le terme "prioritaire" est utilisé pour traduire la présence d’une fenêtre temporelle à l’intérieur de laquelle une ou plusieurs actions spécifiées doivent être terminées avec un niveau de certitude défini. Tout manquement à réaliser ces actions dans la fenêtre de temps prévue risque de provoquer la défaillance des applications qui les demandent, avec le risque de mettre en danger l’équipement, l’usine, voire les personnes.

Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 6-10. del: Specifikacija protokola na aplikacijski ravni - Elementi tipa 10 (IEC 61158-6-10:2023)

Aplikacijska raven procesnih vodil (FAL) uporabniškim programom omogoča dostop do komunikacijskega okolja procesnih vodil. Glede na to je mogoče aplikacijsko raven procesnih vodil šteti za »okno med ustreznimi aplikacijami«.
Ta del standarda IEC 61158 določa skupne elemente za osnovne časovno kritične in časovno nekritične sporočilne komunikacije med aplikacijami v avtomatizacijskem okolju ter material, specifičen za procesna vodila tipa 10. 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 dokument na abstrakten način določa na zunaj vidno vedenje, ki ga zagotavlja aplikacijska raven procesnih vodil tipa 10 v smislu:
– abstraktne sintakse, ki določa podatkovne enote protokola aplikacijske ravni, ki se prenašajo med aplikacijskimi osebki, ki komunicirajo;
– prenosne sintakse, ki določa podatkovne enote protokola aplikacijske ravni, ki se prenašajo med aplikacijskimi osebki, ki komunicirajo;
– stroja stanja aplikacijskega konteksta, ki opredeljuje vedenje aplikacijskega opravila, vidnega med aplikacijskimi osebki, ki komunicirajo, in – strojev stanja aplikacijskega razmerja, ki opredeljujejo komunikacijsko vedenje med aplikacijskimi osebki, ki komunicirajo.
Namen tega dokumenta je opredeliti protokol, ki se zagotavlja za:
– določitev žične predstavitve primitivov opravil iz standarda IEC 61158-5-10 in
– določitev na zunaj vidnega vedenja, povezanega z njihovim prenosom.
Ta dokument določa protokol aplikacijske ravni procesnih vodil tipa 10 v skladu z osnovnim referenčnim modelom OSI (ISO/IEC 7498-1) in strukturo aplikacijske ravni OSI (ISO/IEC 9545).

General Information

• Status: Published
• Publication Date: 05-Oct-2023
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.100.70 - Application layer
• ICS: 35.110 - Networking
• Technical Committee: MOV - Measuring equipment for electromagnetic quantities
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-Jul-2023
• Due Date: 08-Sep-2023
• Completion Date: 06-Oct-2023
• Ref Project: EN IEC 61158-6-10:2023 - Industrial communication networks - Fieldbus specifications - Part 6-10: Application layer protocol specification - Type 10 elements

Relations

• Replaces: SIST EN IEC 61158-6-10:2019 - Industrial communication networks - Fieldbus specifications - Part 6-10: Application layer protocol specification - Type 10 elements (IEC 61158-6-10:2019)
• Effective Date: 04-Apr-2023

Overview

EN IEC 61158-6-10:2023 (IEC 61158-6-10:2023) is the application‑layer protocol specification for Type 10 fieldbus elements within the IEC 61158 family. It provides common elements for both time‑critical and non‑time‑critical messaging between application programs in industrial automation. The standard defines protocol structure, syntax and behaviours needed to support reliable messaging in automation environments where missing a time window can risk equipment, plant operation or safety.

Key Topics

• Application layer protocol definition - formal syntax and semantics for Type 10 elements used by application programs.
• FAL and transfer syntax - Functional Application Layer (FAL) abstract syntax and binary transfer/coding rules for basic data types and common fields.
• Discovery & basic configuration - DCP (Discovery and Configuration Protocol) syntax and state machines for device identification and setup.
• State machines and conformance - protocol state machine descriptions and conformance requirements for implementations.
• Timing considerations - explicit treatment of time‑critical messaging, defining the concept of time windows and associated risks.
• DLL mapping & protocol machines - mapping between application layer services and lower-layer Data Link Layer behaviours.
• Precision transparent clock - support for time synchronization features referenced in the document.
• Normative references - integration points with networking, timing, and management standards (e.g., IEEE 802.x, IEC 62439‑2, relevant IETF RFCs).

Applications

EN IEC 61158-6-10 is relevant for organizations and professionals involved in industrial communication and automation:

• Automation engineers and system architects designing fieldbus‑based control systems that require deterministic or partially time‑constrained messaging.
• Device and gateway manufacturers implementing compliant Type 10 application‑layer stacks for sensors, actuators and controllers.
• System integrators deploying distributed I/O, safety‑related controls or mixed time‑critical/non‑time‑critical networks.
• Test labs and certification bodies verifying conformance to IEC 61158 series requirements.

Typical use cases include designing fieldbus devices, implementing application-layer protocol stacks, configuring discovery and device provisioning, and integrating fieldbus segments with Ethernet and time‑sensitive networking environments.

Related Standards

EN IEC 61158-6-10:2023 is part of the IEC 61158 family and references key standards for interoperability and timing, including:

• IEC 61158 series (physical, data link and other application parts)
• IEC 62439‑2 (Media Redundancy Protocol)
• IEEE 802.1AS / 802.3 (timing & Ethernet)
• Relevant IETF RFCs (IP, UDP, NTP, NETCONF/YANG)
• ISO/IEC OSI and ASN.1 related documents

For implementers and integrators, referencing the full list of normative documents in EN IEC 61158-6-10 ensures correct interoperability and conformance across fieldbus and Ethernet-based industrial networks.

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2023
Nadomešča:
SIST EN IEC 61158-6-10:2019
Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 6-10. del:
Specifikacija protokola na aplikacijski ravni - Elementi tipa 10 (IEC 61158-6-
10:2023)
Industrial communication networks - Fieldbus specifications - Part 6-10: Application layer
protocol specification - Type 10 elements (IEC 61158-6-10:2023)
Industrielle Kommunikationsnetze - Feldbusse - Teil 6-10: Protokollspezifikation des
Application Layer (Anwendungsschicht) - Typ 10-Elemente (IEC 61158-6-10:2023)
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 6-10:
Spécification du protocole de la couche liaison de données - Eléments de type 10 (IEC
61158-6-10:2023)
Ta slovenski standard je istoveten z: EN IEC 61158-6-10:2023
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 IEC 61158-6-10

NORME EUROPÉENNE
EUROPÄISCHE NORM May 2023
ICS 25.040.40; 35.100.70; 35.110 Supersedes EN IEC 61158-6-10:2019
English Version
Industrial communication networks - Fieldbus specifications -
Part 6-10: Application layer protocol specification - Type 10
elements
(IEC 61158-6-10:2023)
Réseaux de communication industriels - Spécifications des Industrielle Kommunikationsnetze - Feldbusse - Teil 6-10:
bus de terrain - Partie 6-10: Spécification du protocole de la Protokollspezifikation des Application Layer
couche liaison de données - Eléments de type 10 (Anwendungsschicht) - Typ 10-Elemente
(IEC 61158-6-10:2023) (IEC 61158-6-10:2023)
This European Standard was approved by CENELEC on 2023-04-28. 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61158-6-10:2023 E

European foreword
The text of document 65C/1204/FDIS, future edition 5 of IEC 61158-6-10, 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
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2024-01-28
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-04-28
document have to be withdrawn
This document supersedes EN IEC 61158-6-10:2019 and all of its amendments and corrigenda (if
any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61158-6-10:2023 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 standard indicated:
IEC 60793-2-30 NOTE Approved as EN 60793-2-30
IEC 60793-2-40 NOTE Approved as EN IEC 60793-2-40
IEC 61158-1 NOTE Approved as EN IEC 61158-1
1 2
IEC/IEEE 60802:— NOTE Approved as EN IEC 60802:—
IEC 61784-1 (series) NOTE Approved as EN IEC 61784-1 (series)
IEC 61784-2 (series) NOTE Approved as EN IEC 61784-2 (series)
IEC 61784-3-3 NOTE Approved as EN IEC 61784-3-3

Under preparation. Stage at the time of publication: IEC/IEEE CD 60802:2022.
Under preparation. Stage at the time of publication: prEN IEC 60802:2020.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where 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.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 61131-9 - Programmable controllers - Part 9: Single- EN IEC 61131-9 -
drop digital communication interface for small
sensors and actuators (SDCI)
IEC 61158-2 2023 Industrial communication networks - Fieldbus EN IEC 61158-2 2023
specifications - Part 2: Physical layer
specification and service definition
IEC 61158-5-10 2023 Industrial communication networks - Fieldbus - -
specifications - Part 5-10: Application layer
service definition - Type 10 elements
IEC 61158-6-3 2019 Industrial communication networks - Fieldbus EN IEC 61158-6-3 2019
specifications - Part 6-3: Application layer
protocol specification - Type 3 elements
IEC 61158-6-10 2010 Industrial communication networks - Fieldbus - -
specifications - Part 6-10: Application layer
protocol specification - Type 10 elements
IEC 62439-2 2021 Industrial communication networks - High EN IEC 62439-2 2022
availability automation networks - Part 2:
Media Redundancy Protocol (MRP)
IEC/TS 60079-47 2021 Explosive atmospheres - Part 47: Equipment CLC IEC/TS 2021
protection by 2-Wire Intrinsically Safe 60079-47
Ethernet concept (2-WISE)
ISO/IEC 646 1991 Information technology - ISO 7-bit coded - -
character set for information interchange
ISO/IEC 7498-1 - Information technology - Open Systems - -
Interconnection - Basic reference model: The
basic model
ISO/IEC 8822 1994 Information technology - Open Systems - -
Interconnection - Presentation service
definition
ISO/IEC 8824-1 - Information technology - Abstract Syntax - -
Notation One (ASN.1) - Part 1: Specification
of basic notation
Publication Year Title EN/HD Year
ISO/IEC 9545 - Information technology - Open Systems - -
Interconnection - Application layer structure
ISO/IEC 9834-8 - Information technology - Procedures for the - -
operation of object identifier registration
authorities - Part 8: Generation of universally
unique identifiers (UUIDs) and their use in
object identifiers
ISO/IEC 10646 - Information technology - Universal coded - -
character set (UCS)
ISO/IEC 10731 - Information technology - Open Systems - -
Interconnection - Basic Reference Model -
Conventions for the definition of OSI services
ISO/IEC/IEEE 2020 Information technology - Microprocessor - -
60559 Systems - Floating-Point arithmetic
ISO 8601-1 2019 Date and time - Representations for - -
information interchange - Part 1: Basic rules
IEEE Std 802 2014 IEEE Standard for Local and metropolitan - -
area networks: Overview and Architecture
IEEE Std 802.1AB 2016 IEEE Standard for Local and metropolitan - -
area networks: Station and Media Access
Control Connectivity Discovery
IEEE 802.1AC 2016 IEEE Standard for Local and metropolitan - -
area networks - Media Access Control (MAC)
Service Definition
IEEE 802.1AS 2020 IEEE Standard for Local and Metropolitan - -
Area Networks - Timing and Synchronization
for Time-Sensitive Applications
IEEE 802.1CB 2017 IEEE Standard for Local and metropolitan - -
area networks - Frame Replication and
Elimination for Reliability
IEEE 802.1Q 2018 IEEE Standard for Local and Metropolitan - -
Area Networks¿Bridges and Bridged
Networks
IEEE 802.3 2018 IEEE Standard for Ethernet - -
IEEE 802.11 2020 IEEE Standard for Information Technology - - -
Telecommunications and Information
Exchange between Systems - Local and
Metropolitan Area Networks - Specific
Requirements - Part 11: Wireless LAN
Medium Access Control (MAC) and Physical
Layer (PHY) Specifications
IEEE 802.15.1 2005 IEEE Standard for Information technology - - -
Telecommunications and information
exchange between systems - Local and
metropolitan area networks - Specific
requirements - Part 15.1: Wireless medium
access control (MAC) and physical layer
(PHY) specifications for wireless personal
area networks (WPANs)
IETF RFC 768 - User Datagram Protocol - -
Publication Year Title EN/HD Year
IETF RFC 791 - Internet Protocol Darpa Internet Program - -
Protocol Specification
IETF RFC 792 - Internet Control Message Protocol - -
IETF RFC 826 - Ethernet Address Resolution Protocol: Or - -
Converting Network Protocol Addresses to
48.bit Ethernet Address for Transmission on
Ethernet Hardware
IETF RFC 1034 - Domain names - concepts and facilities - -
IETF RFC 1213 - Management Information Base for Network - -
Management of TCP/IP-based Internets: MIB-
II
IETF RFC 2131 - Dynamic Host Configuration Protocol - -
IETF RFC 2132 - DHCP Options and BOOTP Vendor - -
Extensions
IETF RFC 2236 - Internet Group Management Protocol, Version - -
IETF RFC 2365 - Administratively Scoped IP Multicast - -
IETF RFC 2474 - Definition of the Differentiated Services Field - -
(DS Field) in the IPv4 and IPv6 Headers
IETF RFC 2475 - An Architecture for Differentiated Services - -
IETF RFC 2674 - Definitions of Managed Objects for Bridges - -
with Traffic Classes, Multicast Filtering and
Virtual LAN Extensions
IETF RFC 2863 - The Interfaces Group MIB - -
IETF RFC 3418 - Management Information Base (MIB) for the - -
Simple Network Management Protocol
(SNMP)
IETF RFC 3535 - Overview of the 2002 IAB Network - -
Management Workshop
IETF RFC 3621 - Power Ethernet MIB - -
IETF RFC 4361 - Node-specific Client Identifiers for Dynamic - -
Host Configuration Protocol Version Four
(DHCPv4)
IETF RFC 4363 - Definitions of Managed Objects for Bridges - -
with Traffic Classes, Multicast Filtering, and
Virtual LAN Extensions
IETF RFC 4604 - Using Internet Group Management Protocol - -
Version 3 (IGMPv3) and Multicast Listener
Discovery Protocol Version 2 (MLDv2) for
Source-Specific Multicast
IETF RFC 4632 - Classless Inter-domain Routing (CIDR): The - -
Internet Address Assignment and Aggregation
Plan
IETF RFC 4836 - Definitions of Managed Objects for IEEE - -
802.3 Medium Attachment Units (MAUs)
IETF RFC 4944 - Transmission of IPv6 Packets over IEEE - -
802.15.4 Networks
Publication Year Title EN/HD Year
IETF RFC 5227 - IPv4 Address Conflict Detection - -
IETF RFC 5277 - NETCONF Event Notifications - -
IETF RFC 5539 - NETCONF over Transport Layer Security - -
(TLS)
IETF RFC 5890 - Internationalized Domain Names for - -
Applications (IDNA): Definitions and
Document Framework
IETF RFC 5905 - Network Time Protocol Version_4: Protocol - -
and Algorithms Specification
IETF RFC 6020 - A Data Modeling Language for the Network - -
Configuration Protocol (NETCONF)
IETF RFC 6021 - Common YANG Data Types - -
IETF RFC 6087 - Guidelines for Authors and Reviewers of - -
YANG Data Model Documents
IETF RFC 6110 - Mapping YANG to Document Schema - -
Definition Languages and Validating
NETCONF Content
IETF RFC 6151 - Updated Security Considerations for the MD5 - -
MessageDigest and the HMAC-MD5
Algorithms
IETF RFC 6241 - Network Configuration Protocol (NETCONF) - -
IETF RFC 6243 - With-defaults Capability for NETCONF - -
IETF RFC 6244 - An Architecture for Network Management - -
Using NETCONF and YANG
IETF RFC 6470 - Network Configuration Protocol (NETCONF) - -
Base Notifications
IETF RFC 6536 - Network Configuration Protocol (NETCONF) - -
Access Control Model
IETF RFC 6890 - Special-Purpose IP Address Registries - -
IETF RFC 6918 - Formally Deprecating Some ICMPv4 - -
Message Types
IETF RFC 8342 - Network Management Datastore Architecture - -
(NMDA)
ITU-T G.781 - Synchronization layer functions for frequency - -
synchronization based on the physical layer
The Open Group, - Technical standard DCE1.1: Remote - -
Publication C706 Procedure Call
Metro Ethernet 2018 Subscriber Ethernet Service Attributes - -
Forum - MEF 10.4
NIST FIPS PUB 2015 Federal Information Processing Standards - -
180-4 Publication, Secure Standard (SHS)
NIST FIPS PUB 2013 Federal Information Processing Standards - -
186-4 Publication, Digital Signature Standard (DSS),

IEC 61158-6-10 ®
Edition 5.0 2023-03
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Fieldbus specifications –
Part 6-10: Application layer protocol specification – Type 10 elements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.70; 35.110 ISBN 978-2-8322-6633-5
– 2 – IEC 61158-6-10:2023 © IEC 2023
CONTENTS
FOREWORD . 46
INTRODUCTION . 48
1 Scope . 49
1.1 General . 49
1.2 Specifications . 49
1.3 Conformance . 50
2 Normative references . 50
3 Terms, definitions, abbreviated terms, symbols, and conventions . 54
3.1 Referenced terms and definitions . 54
3.1.1 ISO/IEC 7498-1 terms. 54
3.1.2 ISO/IEC 8822 terms . 55
3.1.3 ISO/IEC 8824-1 terms. 55
3.1.4 ISO/IEC 9545 terms . 55
3.2 Terms and definitions. 55
3.3 Abbreviated terms and symbols . 64
3.3.1 Abbreviated terms and symbols for services . 64
3.3.2 Abbreviated terms and symbols for distributed I/O . 64
3.3.3 Abbreviated terms and symbols for IEC 62439-2 . 68
3.3.4 Abbreviated terms and symbols for IEC/IEEE 60802 . 68
3.3.5 Abbreviated terms and symbols for IEEE Std 802.1CB . 68
3.3.6 Abbreviated terms and symbols for IEEE Std 802.1Q . 68
3.3.7 Abbreviated terms and symbols for IEEE Std 802.3 . 69
3.3.8 Abbreviated terms and symbols for IETF RFC 2474 . 69
3.3.9 Abbreviated terms and symbols for IETF RFC 4291 . 69
3.4 Conventions . 69
3.4.1 General concept . 69
3.4.2 Conventions for distributed I/O . 70
3.4.3 Conventions used in state machines . 78
4 Application layer protocol specification for common protocols . 83
4.1 FAL syntax description . 83
4.1.1 DLPDU abstract syntax reference . 83
4.1.2 Data types . 85
4.2 Transfer syntax . 87
4.2.1 Coding of basic data types . 87
4.2.2 Coding section related to common basic fields . 95
4.3 Discovery and basic configuration . 109
4.3.1 DCP syntax description . 109
4.3.2 DCP protocol state machines . 143
4.3.3 DLL Mapping Protocol Machines. 162
4.4 Precision transparent clock protocol . 162
4.4.1 FAL syntax description . 162
4.4.2 AP-Context state machine . 173
4.4.3 FAL Service Protocol Machines . 173
4.4.4 Application Relationship Protocol Machines . 173
4.4.5 DLL Mapping Protocol Machines. 238
4.5 Time synchronization . 238
4.5.1 General . 238

IEC 61158-6-10:2023 © IEC 2023 – 3 –
4.5.2 GlobalTime . 241
4.5.3 WorkingClock . 242
4.6 Media redundancy . 246
4.6.1 Media redundancy and loop prevention . 246
4.6.2 Seamless media redundancy . 249
4.7 Real time cyclic . 249
4.7.1 FAL syntax description . 249
4.7.2 FAL transfer syntax . 250
4.7.3 FAL Service Protocol Machines . 260
4.7.4 Application Relationship Protocol Machines . 260
4.7.5 DLL Mapping Protocol Machines. 282
4.8 Real time acyclic . 282
4.8.1 RTA syntax description . 282
4.8.2 RTA transfer syntax . 284
4.8.3 FAL Service Protocol Machines . 294
4.8.4 Application Relationship Protocol Machines . 294
4.8.5 DLL Mapping Protocol Machines. 339
4.9 Fragmentation. 340
4.9.1 General . 340
4.9.2 FRAG syntax description . 343
4.9.3 FRAG transfer syntax . 344
4.9.4 FAL Service Protocol Machines . 346
4.9.5 Application Relationship Protocol Machines . 346
4.9.6 DLL Mapping Protocol Machines. 346
4.10 Remote procedure call . 356
4.10.1 General . 356
4.10.2 RPC syntax description . 356
4.10.3 RPC Transfer syntax . 358
4.10.4 FAL Service Protocol Machines . 374
4.10.5 Application Relationship Protocol Machines . 374
4.10.6 DLL Mapping Protocol Machines. 375
4.11 Link layer discovery . 375
4.11.1 General . 375
4.11.2 FAL common syntax description . 376
4.11.3 LLDP transfer syntax . 378
4.11.4 FAL Service Protocol Machines . 388
4.11.5 Application Relation Protocol Machines . 388
4.11.6 DLL Mapping Protocol Machines. 388
4.12 End stations and bridges. 388
4.12.1 General . 388
4.12.2 Traffic classes . 390
4.12.3 End station . 393
4.12.4 Bridge . 416
4.12.5 Bridged end station . 461
4.12.6 Q port state machine . 470
4.12.7 Pruning port state machine . 476
4.12.8 Bridge extensions . 478
4.12.9 FAL Service Protocol Machines . 479
4.12.10 Application Relation Protocol Machines . 479

– 4 – IEC 61158-6-10:2023 © IEC 2023
4.12.11 DLL Mapping Protocol Machines. 479
4.13 IP suite . 516
4.13.1 Overview . 516
4.13.2 IP/UDP syntax description . 516
4.13.3 IP/UDP transfer syntax . 517
4.13.4 ARP . 520
4.14 Domain name system . 522
4.14.1 General . 522
4.14.2 Primitive definitions . 523
4.14.3 DNS state transition diagram . 523
4.14.4 State machine description . 523
4.14.5 DNS state table . 523
4.14.6 Functions, Macros, Timers and Variables . 523
4.15 Dynamic host configuration . 524
4.15.1 General . 524
4.15.2 Primitive definitions . 524
4.15.3 DHCP state transition diagram . 524
4.15.4 State machine description . 525
4.15.5 DHCP state table . 525
4.15.6 Functions, Macros, Timers and Variables . 526
4.16 Simple network management . 526
4.16.1 General . 526
4.16.2 MIB overview . 527
4.16.3 MIB access . 527
4.16.4 IETF RFC 1213-MIB . 527
4.16.5 Enterprise number for PNIO MIB . 528
4.16.6 MIB cross reference . 528
4.16.7 Behavior in case of modular built bridges . 529
4.16.8 LLDP EXT MIB . 529
4.17 Network configuration . 529
4.17.1 Overview . 529
4.17.2 NETCONF . 530
4.17.3 YANG . 531
4.18 Common DLL Mapping Protocol Machines . 532
4.18.1 Overview . 532
4.18.2 Data Link Layer Mapping Protocol Machine . 533
4.19 Void . 540
4.20 Additional information . 540
5 Application layer protocol specification for distributed I/O . 540
5.1 FAL syntax description . 540
5.1.1 DLPDU abstract syntax reference . 540
5.1.2 APDU abstract syntax . 540
5.2 Transfer syntax . 567
5.2.1 Coding section related to BlockHeader specific fields . 567
5.2.2 Coding section related to RTA-SDU specific fields . 586
5.2.3 Coding section related to common address fields . 591
5.2.4 Coding section related to AL services . 613
5.2.5 Coding section related to ARVendorBlock . 652
5.2.6 Coding section related to PNIOStatus . 653

IEC 61158-6-10:2023 © IEC 2023 – 5 –
5.2.7 Coding section related to I&M Records . 670
5.2.8 Coding section related to Alarm and Diagnosis Data . 677
5.2.9 Coding section related to upload and retrieval . 701
5.2.10 Coding section related to iParameter . 701
5.2.11 Coding section related to NME . 702
5.2.12 Coding section related to CIM . 711
5.2.13 Coding section related to Physical Sync Data . 776
5.2.14 Coding section related to Physical Time Data . 781
5.2.15 Coding section related to Isochrone Mode Data . 786
5.2.16 Coding section related to fast startup. 788
5.2.17 Coding section related to DFP . 791
5.2.18 Coding section related to MRPD . 795
5.2.19 Coding section related to controller to controller communication . 796
5.2.20 Coding section related to system redundancy . 797
5.2.21 Coding section related to energy saving . 800
5.2.22 Coding section related to asset management . 800
5.2.23 Coding section related to reporting system . 805
5.2.24 Coding section related to logbook . 811
5.2.25 Coding section related to Time . 812
5.2.26 Coding section related to Channel Related Process Alarm Reason . 812
5.2.27 Void . 815
5.3 FAL protocol state machines . 816
5.3.1 Overall structure . 816
5.4 AP-Context state machine . 817
5.5 FAL Service Protocol Machines . 817
5.5.1 Overview . 817
5.5.2 FAL Service Protocol Machine Power-On . 817
5.5.3 FAL Service Protocol Machine Device . 818
5.5.4 FAL Service Protocol Machine Controller . 828
5.5.5 FAL Service Protocol Machine Network Management Entity . 839
5.6 Application Relationship Protocol Machines . 840
5.6.1 Alarm Protocol Machine Initiator . 840
5.6.2 Alarm Protocol Machine Responder . 844
5.6.3 Device . 848
5.6.4 Controller . 934
5.6.5 Network Management Entity . 1013
5.7 DLL Mapping Protocol Machines . 1047
5.8 Checking rules . 1048
5.8.1 General . 1048
5.8.2 IODConnectReq . 1048
5.8.3 IODConnectRes . 1061
5.8.4 IODControlReq . 1066
5.8.5 IODControlRes . 1068
5.8.6 IOXControlReq . 1072
5.8.7 IOXControlRes . 1073
5.8.8 IODReleaseReq . 1075
5.8.9 IODReleaseRes . 1076
5.8.10 IODWriteReq . 1077
5.8.11 IODWriteRes . 1079

– 6 – IEC 61158-6-10:2023 © IEC 2023
5.8.12 IODWriteMultipleReq . 1081
5.8.13 IODWriteMultipleRes . 1082
5.8.14 IODReadReq . 1084
5.8.15 IODReadRes . 1086
Annex A (normative) Unified establishing of an AR for all RT classes . 1089
A.1 General . 1089
A.2 AR establishing . 1090
A.3 Startup of Alarm transmitter and receiver . 1097
A.4 Time-aware systems path establishment . 1099
A.5 Void . 1100
A.6 Void . 1100
Annex B (normative) Compatible establishing of an AR . 1101
Annex C (informative) Establishing of a device access AR . 1104
Annex D (informative) Establishing of an AR (accelerated procedure) . 1106
Annex E (informative) Establishing of an AR (fast startup procedure). 1109
Annex F (informative) Example of the upload, storage and retrieval procedure . 1111
Annex G (informative) Implementation of send list control . 1113
G.1 General . 1113
G.2 Implementation model . 1114
G.3 Constraints . 1116
Annex H (informative) Overview of the IO controller and the IO device state machines . 1117
Annex I (informative) Overview of the PTCP synchronization master hierarchy . 1119
Annex J (informative) Optimization of bandwidth usage for Time Aware Shaping . 1121
Annex K (informative) Time constraints for RT_CLASS_3 bandwidth allocation . 1123
Annex L (informative) Time constraints for the forwarding of a frame . 1125
L.1 Principle . 1125
L.2 Forwarding . 1125
Annex M (informative) Principle of dynamic frame packing . 1127
Annex N (informative) Principle of Fragmentation . 1131
Annex O (informative) MRPD – Principle of seamless media redundancy . 1133
Annex P (normative) Principle of a RED_RELAY without forwarding information in
PDIRFrameData . 1135
Annex Q (informative) Constraints for Auto-negotiation . 1138
Q.1 Optimization for fast startup without auto-negotiation . 1138
Q.2 Gigabit PHYs, 2 pair Ethernet cables, and auto-negotiation . 1140
Annex R (informative) Example of a PrmBegin, PrmEnd and ApplRdy sequence . 1141
Annex S (informative) List of supported MIBs. 1142
Annex T (informative) Structure and content of BLOB . 1143
Annex U (normative) Management information bases . 1144
U.1 Void . 1144
U.2 LLDP EXT MIB . 1144
Annex V (normative) Cross reference to IEC 62439-2 . 1167
V.1 Cross reference to IEC 62439-2 . 1167
V.1.1 General . 1167
V.1.2 Ring . 1167
V.1.3 Interconnection . 1168

IEC 61158-6-10:2023 © IEC 2023 – 7 –
Annex W (normative) Maintaining statistic counters for Ethernet . 1170
W.1 General . 1170
W.2 Counting model . 1170
W.3 Explanation of the IETF RFC defined statistic counters . 1172
W.4 Value range of the IETF RFC defined statistic counters . 1173
W.5 VLAN specific statistic counters . 1173
Annex X (informative) Example of RSI fragmentation . 1175
Annex Y (informative) Delayed cut through . 1177
Bibliography . 1179

Figure 1 – Common structure of specific fields for octet 1 . 71
Figure 2 – Common structure of specific fields for octet 2 . 71
Figure 3 – Common structure of specific fields for octet 3 . 71
Figure 4 – Common structure of specific fields for octet 4 . 72
Figure 5 – Common structure of specific fields for octet 5 .
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