ISO 14229-2:2021

October 2021

International standard Current

Road vehicles - Unified diagnostic services (UDS) - Part 2: Session layer services

This document specifies common session layer services and requirements to provide independence between unified diagnostic services (ISO 14229-1) and all transport protocols and network layer services (e.g. ISO 13400-2 DoIP, ISO 15765-2 DoCAN, ISO 10681-2 communication on FlexRay, ISO 14230-2 DoK-Line, and ISO 20794-3 CXPI). This document specifies a common service primitive interface between OSI layer 5 (session) and layer 4 (transport) via so-called service request/indication/confirmation primitives.

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Main informations

Collections

International ISO standards

Publication date

October 2021

Number of pages

53 p.

Reference

ISO 14229-2:2021

ICS Codes

43.180 Diagnostic, maintenance and test equipment

Print number

Sumary

Road vehicles - Unified diagnostic services (UDS) - Part 2: Session layer services

This document specifies a common service primitive interface between OSI layer 5 (session) and layer 4 (transport) via so-called service request/indication/confirmation primitives.

Replaced standards (1)

ISO 14229-2:2013

February 2013

International standard Cancelled

Road vehicles - Unified diagnostic services (UDS) - Part 2 : session layer services

ISO 14229-2:2013 specifies data link independent requirements of session layer services. ISO 14229-2:2013 specifies common session layer services to provide independence between unified diagnostic services (ISO 14229-1) and all transport protocols and network layer services (e.g. ISO 15765-2 DoCAN, ISO 10681-2 communication on FlexRay, ISO 13400 DoIP, ISO 14230-2 DoK-Line, etc.) ISO 14229-2:2013 specifies a common service primitive interface between OSI layer 4 (Transport) and layer 5 (Session) via so-called service request/confirmation/indication primitives. This interface allows seamless implementation of ISO 14229-1 unified diagnostic services (UDS) with any communication protocol titled "DoXYZ / CoXYZ" like ISO 15765 DoCAN - diagnostic communication over Controller Area Network, ISO 13400 DoIP, ISO 10681 communication over FlexRay, ISO 14230 DoK-Line. ISO 15031 (emissions-related OBD) and ISO 27145 (WWH-OBD) support the standardized service primitive interface.

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