International ISO Standard ISO15765-2 Fourth edition Road vehicles Diagnostic 2024-04 communication over Controller Area Network (DoCAN) - Part 2: Transport protocol and network layer services Vehicules routiers - Communication de diagnostic sur gestionnaire de réseau de communication (DoCAN) Partie 2: Protocole de transport et services de la couche reseau Referencenumber ISO 15765-2:2024(en) @ISO2024 @ IS0 2024 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 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 Email: copyright@iso.org Website: www.iso.org Published in Switzerland @IS0 2024 - All rights reserved ii Contents Page Foreword. Introduction Scope. 1 1 2 Normative references .1 .1 3 Terms and definitions 4 Symbols and abbreviated terms. 2 4.1 Symbols 2 Abbreviated terms 4.2 .3 5 Conventions IS0 11898-1 CAN data link layer extension. 6 5 6.1 CAN CC and CAN FD frame feature comparison. 5 6.2 Mapping of transport and network layer attributes to CAN data frames .5 T_Data abstract service primitive interface definition 7 7 7.1 T_Data services. .7 7.2 T_Data interface. .7 7.3 Data type definitions 8 8 Transport and network layer services. 8 8.1 General. 8 8.2 Transport and network layer abstract service primitives. Data.req 8.2.1 9 8.2.2 .10 Data.con 8.2.3 Data_FF.ind. 10 8.2.4 Data.ind. 10 8.2.5 ChangeParameter.req .11 8.2.6 ChangeParameter.con. .11 8.3 Service data unit specification. 12 8.3.1 Mtype, message type 12 8.3.2 Al, address information 12 8.3.3 14 <Length> 8.3.4 <MessageData> .14 8.3.5 <Parameter> 14 8.3.6 <Parameter_Value> .14 8.3.7 15 <Result> 8.3.8 <Result_ChangeParameter> 16 8.4 ASP T_Data to TL_Data interface parameter mapping .16 9 Transport layer protocol. 17 9.1 Protocol functions 17 9.2 Single frame message transmission. .17 9.3 Multiple frame message transmission 17 9.4 Transport layer protocol data units. 19 9.4.1 Protocol data unit types. 19 9.4.2 SF TL_PDU 19 9.4.3 FF TL_PDU. 19 9.4.4 CF TL_PDU. 19 9.4.5 FC TL_PDU 19 9.4.6 TL_PDU field specification. 19 9.5 Transmit data length (TX_DL) configuration. 20 9.5.1 Definition of TX_DL configuration values. 20 9.5.2 Verifying the correctness of received CAN frames 20 9.5.3 Receiver determination RX_DL. .21 9.6 Protocol control information specification 22 @ IS0 2024 - All rights reserved iii