ISO 11898-1

Road vehicles — Controller area network (CAN) — Part 1: Data link layer and physical coding sublayer

ISO 11898-1:2015 specifies the characteristics of setting up an interchange of digital information between modules implementing the CAN data link layer. Controller area network is a serial communication protocol, which supports distributed real-time control and multiplexing for use within road vehicles and other control applications. ISO 11898-1:2015 specifies the Classical CAN frame format and the newly introduced CAN Flexible Data Rate Frame format. The Classical CAN frame format allows bit rates up to 1 Mbit/s and payloads up to 8 byte per frame. The Flexible Data Rate frame format allows bit rates higher than 1 Mbit/s and payloads longer than 8 byte per frame. ISO 11898-1:2015 describes the general architecture of CAN in terms of hierarchical layers according to the ISO reference model for open systems interconnection (OSI) according to ISO/IEC 7498‑1. The CAN data link layer is specified according to ISO/IEC 8802‑2 and ISO/IEC 8802‑3. ISO 11898-1:2015 contains detailed specifications of the following: logical link control sub-layer; medium access control sub-layer; and physical coding sub-layer. There are three implementation options. They are the following: support of the Classical CAN frame format only, not tolerating the Flexible Data Rate frame format; support of the Classical CAN frame format and tolerating the Flexible Data Rate frame format; and support of the Classical CAN frame format and the Flexible Data Rate frame format. The last option is recommended to be implemented for new designs.

Véhicules routiers — Gestionnaire de réseau de communication (CAN) — Partie 1: Couche liaison de données et sous-couche de codage physique

General Information

• Status: Not Published
• ICS: 43.040.15 - Car informatics. On board computer systems
• Technical Committee: ISO/TC 22/SC 31 - Data communication
• Drafting Committee: ISO/TC 22/SC 31 - Data communication
• Current Stage: 6000 - International Standard under publication
• Completion Date: 12-Apr-2024

Relations

• Revises: ISO 11898-1:2015 - Road vehicles — Controller area network (CAN) — Part 1: Data link layer and physical signalling
• Effective Date: 28-Jan-2023

Standards Content (Sample)

FINAL DRAFT
International
Standard
ISO/FDIS 11898-1
ISO/TC 22/SC 31
Road vehicles — Controller area
Secretariat: DIN
network (CAN) —
Voting begins on:
2024-02-15
Part 1:
Data link layer and physical coding
Voting terminates on:
2024-04-11
sublayer
Véhicules routiers — Gestionnaire de réseau de communication
(CAN) —
Partie 1: Couche liaison de données et sous-couche de codage
physique
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 SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 11898-1:2024(en) © ISO 2024

---------------------- Page: 1 ----------------------
FINAL DRAFT
ISO/FDIS 11898-1:2024(en)
International
Standard
ISO/FDIS 11898-1
ISO/TC 22/SC 31
Road vehicles — Controller area
Secretariat: DIN
network (CAN) —
Voting begins on:
Part 1:
Data link layer and physical coding
Voting terminates on:
sublayer
Véhicules routiers — Gestionnaire de réseau de communication
(CAN) —
Partie 1: Couche liaison de données et sous-couche de codage
physique
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
COPYRIGHT PROTECTED DOCUMENT
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/FDIS 11898-1:2024(en) © ISO 2024

© ISO 2024 – All rights reserved
ii

---------------------- Page: 2 ----------------------
ISO/FDIS 11898-1:2024(en)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms. 6
5 Basic concepts of CAN . 9
5.1 CAN properties .9
5.2 Frame transmissions .9
5.3 Bus access method .11
5.4 Information routing .
...

ISO/FDIS 11898-1:2023(E)
ISO /TC 22/SC 31/WG 3
Secretariat: DIN
Date: 2023-122024-01-30
Road vehicles — Controller area network (CAN) —
—
Part 1:
Data link layer and physical coding sublayer
Véhicules routiers — Gestionnaire de réseau de communication (CAN) —
—
Partie 1 : Couche liaison de données et signalisationsous-couche de codage physique
FDIS stage

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ISO/FDIS 11898-1:2023(E2024(en)
© ISO 20232024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved
© ISO 2024 – All rights reserved

ii

---------------------- Page: 2 ----------------------
ISO/FDIS 11898-1:2023(E2024(en)
Contents
Foreword . xv
Introduction .xv i
Part 1: Data link layer and physical coding sublayer. 1
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms . 8
5 Basic concepts of CAN . 10
5.1 CAN properties . 10
5.2 Frame transmissions . 11
5.3 Bus access method . 14
5.4 Information routing . 14
5.5 Network flexibility . 14
5.6 Remote data request . 14
5.7 Error detection . 14
5.8 Error signalling and recovery time . 15
5.9 Fault confinement . 15
5.10 Error-active . 15
5.11 Error-passive . 15
5.12 Bus-off .
...