基于CAN网的车载UDS诊断协议标准

Reference numbe

First edition

2004-10-15

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Published in Switzerland

Foreword ............................................................................................................................................................ iv

Introduction ........................................................................................................................................................ v

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

2 Normative references ........................................................................................................................... 1

3 Terms, definitions and abbreviated terms.......................................................................................... 1

4 Network layer overview ........................................................................................................................ 3

4.1 General ................................................................................................................................................... 3

4.2 Services provided by network layer to higher layers........................................................................ 3

6.1 Protocol functions .............................................................................................................................. 12

6.2 Single frame transmission ................................................................................................................. 12

6.3 Multiple frame transmission .............................................................................................................. 12

6.4 Network layer protocol data units ..................................................................................................... 15

6.5 Protocol control information specification ......................................................................................16

6.6 Maximum number of FC.Wait frame transmissions (N_WFTmax)................................................. 23

6.7 Network layer timing........................................................................................................................... 23

6.8 Interleaving of messages ................................................................................................................... 27

7 Data link layer usage .......................................................................................................................... 27

7.1 Data link layer interface services ...................................................................................................... 27

Bibliography ..................................................................................................................................................... 35

Electrical and electronic equipment.

ISO 15765 consists of the following parts, under the general title Road vehicles — Diagnostics on Controller

Area Networks (CAN):

 Part 4: Requirements for emissions-related systems

systems implemented on a Controller Area Network (CAN) communication link, as specified in ISO 11898.

Although primarily intended for diagnostic systems, it also meets requirements from other CAN-based

systems needing a network layer protocol.

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

The application layer services covered by ISO 15765-3 have been defined in compliance with diagnostic

is also compatible with most diagnostic services defined in national standards or vehicle manufacturer's

The network layer services covered by this part of ISO 15765 have been defined to be independent of the

For other application areas, ISO 15765 can be used with any CAN physical layer.

diagnostics

(OBD)