Road vehicles -- Tachograph systems

ISO 16844-6:2014 defines diagnostic communication and services for tachograph systems of road vehicles. The communication is specified both for CAN communication mode and K-line communication mode. The diagnostic services based on ISO 14229-1 and most services are common for the two communication interfaces. Interface specific implementations are specified in the respective sections.

Véhicules routiers -- Systèmes tachygraphes

General Information

Status
Published
Publication Date
12-Jan-2015
Current Stage
6060 - International Standard published
Start Date
24-Nov-2014
Completion Date
13-Jan-2015
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INTERNATIONAL ISO
STANDARD 16844-6
Second edition
2015-01-15
Road vehicles — Tachograph systems —
Part 6:
Diagnostics
Véhicules routiers — Systèmes tachygraphes —
Partie 6: Diagnostic
Reference number
ISO 16844-6:2015(E)
ISO 2015
---------------------- Page: 1 ----------------------
ISO 16844-6:2015(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

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ii © ISO 2015 – All rights reserved
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ISO 16844-6:2015(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative reference ......................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Abbreviated terms .............................................................................................................................................................................................. 2

5 Overview and conventions ......................................................................................................................................................................... 2

5.1 Service description conventions .............................................................................................................................................. 2

5.2 Addresses..................................................................................................................................................................................................... 2

5.2.1 General...................................................................................................................................................................................... 2

5.2.2 Functional addresses ................................................................................................................................................... 2

5.2.3 Physical addresses .......................................................................................................................................................... 2

5.3 Parameters ................................................................................................................................................................................................. 2

6 Diagnostic services implementation ............................................................................................................................................... 2

6.1 General and overview ....................................................................................................................................................................... 2

6.2 Diagnostic and communication management functional unit ....................................................................... 4

6.2.1 DiagnosticSessionControl service ..................................................................................................................... 4

6.2.2 ECUReset service ............................................................................................................................................................. 4

6.2.3 SecurityAccess service ................................................................................................................................................ 5

6.2.4 CommunicationControl service .......................................................................................................................... 5

6.2.5 SecuredDataTransmission service ................................................................................................................... 5

6.2.6 ResponseOnEvent service ........................................................................................................................................ 5

6.2.7 LinkControl service ....................................................................................................................................................... 6

6.3 Data transmission functional unit .......................................................................................................................................... 7

6.3.1 ReadDataByIdentifier service ............................................................................................................................... 7

6.3.2 ReadDataByPeriodicIdentifier service .......................................................................................................... 7

6.3.3 DynamicallyDefineDataIdentifier service .................................................................................................. 7

6.3.4 WriteDataByIdentifier service ............................................................................................................................. 7

6.4 Stored data transmission functional unit......................................................................................................................... 8

6.4.1 ClearDiagnosticInformation service ............................................................................................................... 8

6.4.2 ReadDTCInformation service ................................................................................................................................ 8

6.5 Input/Output control functional unit .................................................................................................................................. 9

6.5.1 InputOutputControlByIdentifier service .................................................................................................... 9

6.6 Remote activation of routine functional unit ................................................................................................................ 9

6.6.1 RoutineControl service ............................................................................................................................................... 9

7 Application layer requirements ........................................................................................................................................................10

7.1 General ........................................................................................................................................................................................................10

7.2 Application layer protocol ..........................................................................................................................................................10

7.2.1 General...................................................................................................................................................................................10

7.2.2 Application layer timing .........................................................................................................................................10

8 Presentation layer requirements .....................................................................................................................................................10

9 Session layer requirements ....................................................................................................................................................................10

© ISO 2015 – All rights reserved iii
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ISO 16844-6:2015(E)

10 CAN protocol layers .........................................................................................................................................................................................11

10.1 General ........................................................................................................................................................................................................11

10.2 Transport layer ....................................................................................................................................................................................11

10.3 Network layer (CAN only) ..........................................................................................................................................................11

10.3.1 General...................................................................................................................................................................................11

10.3.2 Communication parameters ...............................................................................................................................11

10.4 CAN data link layer ...........................................................................................................................................................................11

10.4.1 General...................................................................................................................................................................................11

10.4.2 Protocol .................................................................................................................................................................................11

10.4.3 Address coding method ..........................................................................................................................................11

10.5 CAN physical layer ............................................................................................................................................................................11

11 K-Line protocol layers ..................................................................................................................................................................................11

11.1 General ........................................................................................................................................................................................................11

11.2 K-line data link layer .......................................................................................................................................................................12

11.2.1 General...................................................................................................................................................................................12

11.2.2 Protocol specific key bytes ...................................................................................................................................12

11.2.3 Initialisation ......................................................................................................................................................................12

11.2.4 Timing ....................................................................................................................................................................................12

11.3 K-line physical layer .........................................................................................................................................................................12

11.3.1 General...................................................................................................................................................................................12

11.3.2 Configuration ...................................................................................................................................................................12

Bibliography .............................................................................................................................................................................................................................13

iv © ISO 2015 – All rights reserved
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ISO 16844-6:2015(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any

patent rights identified during the development of the document will be in the Introduction and/or on

the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers

to Trade (TBT), see the following URL: Foreword — Supplementary information.

This second edition cancels and replaces the first edition (ISO 16844-6:2004), which has been

technically revised.

The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 3, Electrical

and electronic equipment.

ISO 16844 consists of the following parts, under the general title Road vehicles — Tachograph systems:

— Part 1: Electrical connectors
— Part 2: Electrical interface with recording unit
— Part 3: Motion sensor interface
— Part 4: CAN interface
— Part 5: Secured CAN interface
— Part 6: Diagnostics
— Part 7: Parameters
© ISO 2015 – All rights reserved v
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ISO 16844-6:2015(E)
Introduction

This International Standard supports and facilitates the communication between electronic control units

[3]

and a tachograph. The tachograph is based upon the European Council Regulation (EC) No 561/2006

[4]
and (EEC) No 3821/85 as last amended.

The digital tachograph concept is based upon an RU storing data, related to the activities of the various

drivers driving the vehicle, on which it is installed.

During the normal operational status of the RU, data stored in its memory are accessible to different

entities (drivers, authorities, workshops, transport companies) in different ways (displayed on a screen,

printed by a printing device, downloaded to an external device). Access to stored data is controlled by a

smart card inserted in the tachograph.

In order to prevent manipulation of the tachograph system, the speed signal sender (motion sensor) is

provided with an encrypted data link.
A typical tachograph system is shown in Figure 1.
Key
1 positive supply
2 battery minus
3 speed signal, real time
4 data signal in/out
Figure 1 — Typical tachograph system
vi © ISO 2015 – All rights reserved
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ISO 16844-6:2015(E)

This part of ISO 16844 has been established in order to enable the implementation of unified diagnostic

services on CAN and on K-Line.

To achieve this, it is based on the Open Systems Interconnection (OSI) Basic Reference Model specified

[1] [2]

in ISO/IEC 7498-1 and ISO/IEC 10731, which structures communication systems into seven layers.

When mapped on this model, the services specified by ISO 16844 are divided as given in Table 1.

Table 1 — Diagnostics implementation reference applicable to the OSI layers
Diagnostics according to this part of
ISO 16844
Applicability OSI seven layer
On CAN On K-Line
Seven layer according to Application ISO 14229-1/ISO 16844-6/ISO 16844-5
ISO 7498-1 (layer 7)
ISO 14229-3 ISO 14229-6
and
Presentation Vehicle manufacturer specific
ISO/IEC 10731
(layer 6)
Session ISO 14229-2
(layer 5)
Transport ISO 15765-2 —
(layer 4)
Network
(layer 3)
Data link ISO 16844-4 ISO 14230-2/
(layer 2) ISO 14230-1
Physical
(layer 1)
© ISO 2015 – All rights reserved vii
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INTERNATIONAL STANDARD ISO 16844-6:2015(E)
Road vehicles — Tachograph systems —
Part 6:
Diagnostics
1 Scope

This part of ISO 16844 defines diagnostic communication and services for tachograph systems

of road vehicles. The communication is specified both for CAN communication mode and K-line

communication mode.

The diagnostic services based on ISO 14229-1 and most services are common for the two communication

interfaces. Interface specific implementations are specified in the respective sections.

2 Normative reference

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 14229-1, Road vehicles — Unified diagnostic services (UDS) — Part 1: Specification and requirements

ISO 14229-2, Road vehicles — Unified diagnostic services (UDS) — Part 2: Session layer services

ISO 14229-3, Road vehicles — Unified diagnostic services (UDS) — Part 3: Unified diagnostic services on

CAN implementation (UDSonCAN)

ISO 14229-6, Road vehicles — Unified diagnostic services (UDS) — Part 6: Unified diagnostic services on

K-Line implementation (UDSonK-Line)

ISO 14230-1, Road vehicles — Diagnostic communication over K-Line (DoK-Line) — Part 1: Physical layer

ISO 14230-2, Road vehicles — Diagnostic communication over K-Line (DoK-Line) — Part 2: Data link layer

ISO 15765-2, Road vehicles — Diagnostic communication over K-Line (DoK-Line) — Part 2: Transport

protocol and network layer services
ISO 16844-4, Road vehicles — Tachograph systems — Part 4: CAN interface
ISO 16844-5, Road vehicles — Tachograph systems — Part 5: Secured CAN interface
ISO 16844-7, Road vehicles — Tachograph systems — Part 7: Parameters
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
recording unit

part of the tachograph system which acquires and stores data concerning the vehicle and its driver(s)

and their activities

Note 1 to entry: A recording unit is also referenced as a vehicle unit in other standards, both are synonyms.

© ISO 2015 – All rig
...

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