1、BS ISO 17987-7:2016Road vehicles LocalInterconnect Network (LIN)Part 7: Electrical Physical Layer (EPL)conformance test specificationBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 17987-7:2016 BRITISH STANDARDNational forewordThis British Standard is the UK i
2、mplementation of ISO 17987-7:2016. The UK participation in its preparation was entrusted to TechnicalCommittee AUE/16, Data Communication (Road Vehicles).A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all
3、 the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 81734 2 ICS 43.040.15 Compliance with a British Standard cannot confer immunity from legal obligations.This British
4、 Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 17987-7:2016 ISO 2016Road vehicles Local Interconnect Network (LIN) Part 7: Electrical Physical Layer (EPL)
5、conformance test specificationVhicules routiers Rseau Internet local (LIN) Partie 7: Spcification dessai de conformit de la couche lectrique physique (EPL)INTERNATIONAL STANDARDISO17987-7First edition2016-12-01Reference numberISO 17987-7:2016(E)BS ISO 17987-7:2016ISO 17987-7:2016(E)ii ISO 2016 All r
6、ights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll 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
7、or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrighti
8、so.orgwww.iso.orgBS ISO 17987-7:2016ISO 17987-7:2016(E)Foreword vIntroduction vi1 Scope . 12 Normative references 13 Terms, definitions, symbols and abbreviated terms . 13.1 Terms and definitions . 13.2 Symbols . 13.3 Abbreviated terms . 44 Conventions . 55 EPL 12 V LIN devices with RX and TX access
9、 . 55.1 Test specification overview 55.1.1 Test case organization . 55.1.2 Measurement and signal generation requirements 65.2 Operational conditions Calibration 75.2.1 Electrical input/output, LIN protocol 75.2.2 EPLCT 1 Operating voltage range 75.2.3 Threshold voltages . 85.2.4 EPLCT 5 Variation o
10、f VSUP_NON_OP125.2.5 IBUSunder several conditions 135.2.6 Slope control . 165.2.7 Propagation delay 195.2.8 Supply voltage offset215.2.9 Failure 285.2.10 EPLCT 22 Verifying internal capacitance and dynamic interference IUT as slave 305.3 Operation mode termination . 325.3.1 General. 325.3.2 EPLCT 23
11、 Measuring internal resistor IUT as slave .335.3.3 EPLCT 24 Measuring internal resistor IUT as master 345.4 Static test cases 346 EPL 12 V LIN devices without RX and TX access .386.1 Test specification overview . 386.2 Communication scheme . 386.2.1 General. 386.2.2 IUT as slave 386.2.3 IUT as maste
12、r .396.2.4 IUT class C device .406.3 Test case organization . 426.4 Measurement and signal generation Requirements 436.4.1 Data generation 436.4.2 Various requirements .456.5 Operational conditions Calibration . 456.5.1 Electrical input/output, LIN protocol .456.5.2 EPLCT 25 Operating voltage range
13、456.5.3 Threshold voltages 476.5.4 EPLCT 29 Variation of VSUP_NON_OP 0,3 V to 7,0 V, 18 V to 40 V .516.5.5 IBUSunder several conditions 526.5.6 Slope control . 556.5.7 EPLCT 35 Propagation delay . 596.5.8 Supply voltage offset656.5.9 Failure 74 ISO 2016 All rights reserved iiiContents PageBS ISO 179
14、87-7:2016ISO 17987-7:2016(E)6.5.10 EPLCT 48 Verifying internal capacitance and dynamic interference IUT as slave 766.6 Operation mode termination . 786.6.1 General. 786.6.2 EPLCT 49 Measuring internal resistor IUT as slave .796.6.3 EPLCT 50 Measuring internal resistor IUT as master 796.7 Static test
15、 cases 797 EPL 24 V LIN devices with RX and TX access 827.1 Test specification overview . 837.1.1 Test case organization 837.1.2 Measurement and signal generation Requirements .837.2 Operational conditions Calibration . 847.2.1 Electrical input/output, LIN protocol .847.2.2 EPLCT 51 Operating voltag
16、e range 847.2.3 Threshold voltages 867.2.4 EPLCT 55 Variation of VSUP_NON_OP907.2.5 IBUSunder several conditions 917.2.6 Slope control . 947.2.7 Propagation delay 977.2.8 Supply voltage offset987.2.9 Failure .1127.2.10 EPLCT 80 Verifying internal capacitance and dynamic interference IUT as slave .11
17、47.3 Operation mode termination 1167.3.1 General1167.3.2 EPLCT 81 Measuring internal resistor IUT as slave 1177.3.3 EPLCT 82 Measuring internal resistor IUT as master .1177.4 Static test cases .1188 EPL 24 V LIN devices without RX and TX access . 1218.1 Test specification overview 1218.2 Communicati
18、on scheme 1218.2.1 Overview .1218.2.2 IUT as slave .1228.2.3 IUT as master 1228.2.4 IUT Class C device .1238.3 Test case organization 1258.4 Measurement and signal generation Requirements .1268.4.1 Data generation .1268.4.2 Various requirements 1288.5 Operational conditions Calibration 1288.5.1 Elec
19、trical input/output, LIN protocol 1288.5.2 EPLCT 83 Operating voltage range .1288.5.3 Threshold voltages .1308.5.4 EPLCT 87 Variation of VSUP_NON_OP 0,3 V to 7,0 V, 18 V to 58 V 1358.5.5 IBUSunder several conditions .1378.5.6 Slope control 1418.5.7 EPLCT 93 Propagation delay 1468.5.8 Supply voltage
20、offset.1518.5.9 Failure .1648.5.10 EPLCT 106 Verifying internal capacitance and dynamic interference IUT as slave .1668.6 Operation mode termination 1678.6.1 General1678.6.2 EPLCT 107 Measuring internal resistor IUT as slave 1688.6.3 EPLCT 108 Measuring internal resistor IUT as master .1688.7 Static
21、 test cases .169Bibliography . 172iv ISO 2016 All rights reservedBS ISO 17987-7:2016ISO 17987-7:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normall
22、y 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
23、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 di
24、fferent 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
25、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/pat
26、ents).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 ISOs adherence to the World Trade
27、 Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 31, Electrical and electronic equipment.A list of all parts in the ISO 17987 series ca
28、n be found on the ISO website. ISO 2016 All rights reserved vBS ISO 17987-7:2016ISO 17987-7:2016(E)IntroductionThe LIN protocol as proposed is an automotive focused low-speed universal asynchronous receiver transmitter (UART)-based network. Some of the key characteristics of the Local Interconnect N
29、etwork (LIN) protocol are signal-based communication, schedule table-based frame transfer, master/slave communication with error detection, node configuration and diagnostic service transportation.The LIN protocol is for low-cost automotive control applications, for example, door module and air cond
30、ition systems. It serves as a communication infrastructure for low-speed control applications in vehicles by providing signal-based communication to exchange information between applications in different nodes, bitrate support from 1 kbit/s to 20 kbit/s, deterministic schedule table-based frame comm
31、unication, network management that wakes up and puts the LIN cluster into sleep mode in a controlled manner, status management that provides error handling and error signalling, transport layer that allows large amount of data to be transported (such as diagnostic services), specification of how to
32、handle diagnostic services, electrical physical layer specifications, node description language describing properties of slave nodes, network description file describing behaviour of communication, and application programmers interface.ISO 17987 (all parts) is based on the open systems interconnecti
33、on (OSI) basic reference model as specified in ISO/IEC 74981 which structures communication systems into seven layers.The OSI model structures data communication into seven layers called (top down) application layer (layer 7), presentation layer, session layer, transport layer, network layer, data l
34、ink layer and physical layer (layer 1). A subset of these layers is used in ISO 17987 (all parts).ISO 17987 (all parts) distinguishes between the services provided by a layer to the layer above it and the protocol used by the layer to send a message between the peer entities of that layer. The reaso
35、n for this distinction is to make the services, especially the application layer services and the transport layer services, reusable also for other types of networks than LIN. In this way, the protocol is hidden from the service user and it is possible to change the protocol if special system requir
36、ements demand it.ISO 17987 (all parts) provides all documents and references required to support the implementation of the requirements related to the following: ISO 179871: This part provides an overview of the ISO 17987 (all parts) and structure along with the use case definitions and a common set
37、 of resources (definitions, references) for use by all subsequent parts. ISO 179872: This part specifies the requirements related to the transport protocol and the network layer requirements to transport the PDU of a message between LIN nodes. ISO 179873: This part specifies the requirements for imp
38、lementations of the LIN protocol on the logical level of abstraction. Hardware related properties are hidden in the defined constraints. ISO 179874: This part specifies the requirements for implementations of active hardware components which are necessary to interconnect the protocol implementation.
39、vi ISO 2016 All rights reservedBS ISO 17987-7:2016ISO 17987-7:2016(E) ISO/TR 179875: This part specifies the LIN application programmers interface (API) and the node configuration and identification services. The node configuration and identification services are specified in the API and define how
40、a slave node is configured and how a slave node uses the identification service. ISO 179876: This part specifies tests to check the conformance of the LIN protocol implementation according to ISO 179872 and ISO 179873. This comprises tests for the data link layer, the network layer and the transport
41、 layer. ISO 179877: This part specifies tests to check the conformance of the LIN electrical physical layer implementation (logical level of abstraction) according to ISO 179874. ISO 2016 All rights reserved viiBS ISO 17987-7:2016BS ISO 17987-7:2016Road vehicles Local Interconnect Network (LIN) Part
42、 7: Electrical Physical Layer (EPL) conformance test specification1 ScopeThis document specifies the conformance test for the electrical physical layer (EPL) of the LIN communications system. It is part of this document to define a test that considers ISO 9646 and ISO 179874.The purpose of this docu
43、ment is to provide a standardized way to verify whether a LIN bus driver is compliant to ISO 179874. The primary motivation is to ensure a level of interoperability of LIN bus drivers from different sources in a system environment.This document provides all the necessary technical information to ens
44、ure that test results are consistent even on different test systems, provided that the particular test suite and the test system are compliant to the content of this document.2 Normative referencesThe following documents are referred to in text in such a way that some or all of their content constit
45、utes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 179874:2016, Road vehicles Local Interconnect Network (LIN) Part 4: Electrical Physical Layer (EPL) s
46、pecification 12V/24V3 Terms, definitions, symbols and abbreviated terms3.1 Terms and definitionsFor the purposes of this document, the terms and definitions in ISO 179874 and ISO 179876 apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Ele
47、ctropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obpNOTE This also includes the device classification of ISO 179876:2016, 5.6 into class A/B/C for the different ECU and transceiver types.3.2 Symbols% Percentages MicrosecondC1/2 capacita
48、nceINTERNATIONAL STANDARD ISO 17987-7:2016(E) ISO 2016 All rights reserved 1BS ISO 17987-7:2016ISO 17987-7:2016(E)CCOMMONcapacitance in the communication lineCLINEline capacitanceCBUStotal bus capacitanceCMASTERcapacitance of master nodeCREFreference capacitanceCRXDRXD capacitance (LIN receiver, RXD
49、 capacitive load condition)CSLAVEcapacitance of slave node mathematical symbol: replacement for “is an element of”d2V/dt2second derivative of Voltage (Volt2per second2)di/dt instantaneous rate of current change (amps per second)D1/2 diodeDser_intserial internal diode at transceiver ICDser_masterserial master diodeFTStest system bit rateIBUScurrent into the ECU bus lineIBUS_LIMcurrent
