ISO 15765-2:2016

Road vehicles — Diagnostic communication over Controller Area Network (DoCAN) — Part 2: Transport protocol and network layer services

ISO 15765-2:2016 specifies a transport protocol and network layer services tailored to meet the requirements of CAN‑based vehicle network systems on controller area networks as specified in ISO 11898‑1. It has been defined in accordance with the diagnostic services established in ISO 14229‑1 and ISO 15031‑5 but is not limited to use with them and is also compatible with most other communication needs for in‑vehicle networks. ISO 11898‑1 specifies variable length CAN frames with a maximum payload size dependent on the protocol device used. A CLASSICAL CAN protocol device can transmit/receive frames with payload sizes ranging from 0 bytes to 8 bytes per frame. A CAN FD (flexible data rate) protocol device can transmit/receive frames with payload sizes from 0 bytes to 64 bytes. A CAN FD protocol device is also capable of transmitting/receiving CLASSICAL CAN frames. The diagnostic communication over controller area network (DoCAN) protocol supports the standardized service primitive interface as specified in ISO 14229‑2 (UDS). ISO 15765-2:2016 provides the transport protocol and network layer services to support different application-layer implementations such as - enhanced vehicle diagnostics (emissions-related system diagnostics beyond legislated functionality, non-emissions-related system diagnostics), - emissions-related on-board diagnostics (OBD) as specified in ISO 15031, - world-wide harmonized on-board diagnostics (WWH-OBD) as specified in ISO 27145, and - end of life activation on on-board pyrotechnic devices (ISO 26021). The transport protocol specifies an unconfirmed communication. NOTE This part of ISO 15765 does not determine whether CLASSICAL CAN, CAN FD or both are recommended or required to be implemented by other standards referencing this part of ISO 15765.

Véhicules routiers — Communication de diagnostic sur gest ionnaire de réseau de communication (DoCAN) — Partie 2: Protocole de transport et services de la couche réseau

General Information

• Status: Withdrawn
• Publication Date: 11-Apr-2016
• ICS: 43.040.15 - Car informatics. On board computer systems
• ICS: 43.180 - Diagnostic, maintenance and test equipment
• Technical Committee: ISO/TC 22/SC 31 - Data communication
• Drafting Committee: ISO/TC 22/SC 31/WG 2 - Vehicle diagnostic protocols
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 05-Apr-2024

Relations

• Revised: ISO 15765-2:2024 - Road vehicles — Diagnostic communication over Controller Area Network (DoCAN) — Part 2: Transport protocol and network layer services
• Effective Date: 06-Jun-2022
• Revises: ISO 15765-2:2011 - Road vehicles — Diagnostic communication over Controller Area Network (DoCAN) — Part 2: Transport protocol and network layer services
• Effective Date: 17-May-2014

Standards Content (Sample)

DRAFT INTERNATIONAL STANDARD
ISO/DIS 15765-2
ISO/TC 22/SC 3 Secretariat: DIN
Voting begins on: Voting terminates on:
2015-03-19 2015-06-19
Road vehicles — Diagnostic communication over
Controller Area Network (DoCAN) —
Part 2:
Transport protocol and network layer services
Véhicules routiers — Communication de diagnostic sur gest ionnaire de réseau de communication (DoCAN) —
PartieParte 2: Protocole de transport et services de la couche réseau
ICS: 43.040.15
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 15765-2:2015(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2015

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ISO/DIS 15765-2:2015(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2015
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
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Published in Switzerland
ii © ISO 2015 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/DIS 15765-2
Contents Page
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 2
3.1 Terms and definitions . 2
3.2 Abbreviated terms . 2
4 Conventions . 4
5 Document overview . 5
6 ISO 11898-1 CAN data link layer extension . 6
6.1 CLASSICAL CAN and CAN FD frame feature comparison . 6
6.2 Illustration of CAN parameters for transport protocol and network layer services . 6
6.3 Additional requirements for CAN FD . 8
7 Network layer overview . 8
7.1 General . 8
7.2 Services provided by network layer to higher layers . 8
7.3 Internal operation of network layer . 9
8 Network layer services . 10
8.1 General . 10
8.2 Specification of network layer service primitives . 11
8.3 Service data unit specification . 14
9 Transport layer protocol . 19
9.1 Protocol functions .
...

INTERNATIONAL ISO
STANDARD 15765-2
Third edition
2016-04-01
Road vehicles — Diagnostic
communication over Controller Area
Network (DoCAN) —
Part 2:
Transport protocol and network layer
services
Véhicules routiers — Communication de diagnostic sur gest ionnaire
de réseau de communication (DoCAN) —
Partie 2: Protocole de transport et services de la couche réseau
Reference number
ISO 15765-2:2016(E)
©
ISO 2016

---------------------- Page: 1 ----------------------
ISO 15765-2:2016(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2016 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 15765-2:2016(E)

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 2
3.1 Terms and definitions . 2
3.2 Abbreviated terms . 2
4 Conventions . 3
5 Document overview. 3
6 ISO 11898-1 CAN data link layer extension . 4
6.1 CLASSICAL CAN and CAN FD frame feature comparison . 4
6.2 Illustration of CAN parameters for transport protocol and network layer services . 5
6.3 Additional requirements for CAN FD . 6
7 Network layer overview . 7
7.1 General . 7
7.2 Services provided by network layer to higher layers . 7
7.3 Internal operation of network layer . 8
8 Network layer services .10
8.1 General .10
8.2 Specification of network layer service primitives .
...