ISO 11992-4:2023 PDF

Name: ISO 11992-4:2023 — Road vehicles — Interchange of digital information on electrical connections between towing and towed vehicles — Part 4: Diagnostic communication
SKU: ISO 11992-4:2023
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Road vehicles — Interchange of digital information on electrical connections between towing and towed vehicles — Part 4: Diagnostic communication

Название (английский):

ISO 11992-4:2023

Road vehicles — Interchange of digital information on electrical connections between towing and towed vehicles — Part 4: Diagnostic communication

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 30
Дата публикации:: 14 апреля 2023 г.
Издание:: ISO IS 11992 edition 3 version 1
ICS:: 43.040.15

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Описание (английский):

This document specifies diagnostic application requirements and OSI-layer related communication profiles to ensure the interchange of digital information between towing and towed vehicles with a maximum authorized total mass greater than 3 500 kg. The conformance and interoperability test plans are not part of this document.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 11992-4:2023 - "Road vehicles - Interchange of digital information on electrical connections between towing and towed vehicles - Part 4: Diagnostic communication" defines diagnostic application requirements and OSI-layer communication profiles to enable reliable diagnostic communication between towing and towed vehicles with a maximum authorized total mass greater than 3 500 kg. The document is structured around the OSI model and specifies application-, session-, transport-, network-, data link- and physical-layer requirements needed for diagnostic data exchange. Note: conformance and interoperability test plans are not included.

Key topics and technical requirements

The standard focuses on diagnostic communication over the vehicle-to-towed-vehicle electrical connection and includes:

OSI-layer mapping and profiles - Application, Presentation, Session, Transport, Network, Data Link and Physical layer requirements and communication profiles (ComProfile).

Application layer services - Diagnostic services such as CommunicationControl, ReadDataByIdentifier, ReadDtcInformation, DTC/DID definitions, negative response codes, and addressing of requested information.

Abstract Service Primitive (ASP) - Definition of A_Data.req / A_Data.ind / A_Data.con interfaces and parameter mappings.

Session & Transport layer definitions - Service primitives (S_Data, T_Data), transport protocol and USDT handling.

Network layer requirements - Diagnostic CAN identifier configuration, dynamic and static network address assignment, gateway N_PDU routing and network address translation.

Data link & Physical layer - CAN frame definitions and lower-layer requirements for robust link-level diagnostic exchange.

Diagnostic elements - DTC field and functional unit definitions, Data Identifier (DID) structure and Diagnostic Communication Port (DCP).

Structure and conformance notes - Introduction of requirement numbering, application requirements and OSI-specific clauses in this third edition.

Practical applications

ISO 11992-4:2023 is used to:

Enable standardized remote diagnostics and maintenance data exchange between tractors and trailers (heavy trucks, buses, trailers, >3,500 kg).

Support development of diagnostic tools, telematics gateways, and trailer electronic control units (ECUs) that interoperably read DIDs and DTCs.

Guide OEM and supplier implementations for vehicle diagnostic interoperability across towing/towed interfaces.

Define communication behavior for gateway routing, address assignment and session handling in multi-vehicle systems.

Related standards

ISO 11992 series (Parts 1–3) for vehicle-to-towed-vehicle communications

ISO 14229 (UDS) series for diagnostic services

ISO 22901-1 (vehicle-specific diagnostic data) and ISO/IEC 7498-1 (OSI reference model)

Keywords: ISO 11992-4:2023, diagnostic communication, towing and towed vehicles, OSI layers, vehicle diagnostics, CAN, DTC, DID, network address assignment.

ISO 11992-4:2023 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications

Who should use this standard

Related standards

Технические детали

ISO 11992-3:2003/Amd 1:2008

Road vehicles — Interchange of digital information on electrical connections between towing and towed vehicle…

ISO 14229-1:2020/Amd 1:2022

Road vehicles — Unified diagnostic services (UDS) — Part 1: Application layer — Amendment 1

ISO 22901-1:2008

Road vehicles — Open diagnostic data exchange (ODX) — Part 1: Data model specification

ISO/IEC 7498-1:1994

Information technology — Open Systems Interconnection — Basic Reference Model: The Basic Model