Tiêu chuẩn iso 17987 1 2016

© ISO 2016 Road vehicles — Local Interconnect Network (LIN) — Part 1 General information and use case definition Véhicules routiers — Réseau Internet local (LIN) — Partie 1 Information générale et déf[.]

Road vehicles — Local Interc onnect

Part 1:

Vé icule s ro tiers — Résea Inte net local (LIN)—

Partie 1: Inormation g n rale et définition de s cas d’usage

Fir t edition

2 16-0 -1

Refer ence n mb r

ISO 179 7-1:2 16(E)

COPYRIGHT PROTECTED DOCUMENT

© ISO 2016, P blshed in Sw itz rlan

A ll rig hts r eserved Unles otherw ise spe ified, nopar of this p blc tion ma y be r epr od c d or utilz d otherw ise in an form

or b an me ns, ele tr onic or me hanic l, inclu in p oto opying , or postin on the internet or an intranet , w ithout prior

written permis ion Permis ion c n be req esed from either ISO at the ad r es below or ISO’s member bod y in the c u try of

the r eq eser

ISO c pyrig ht ofic

C de Blan on et 8 • C 4 1

CH-1 14 Vernier, Geneva, Sw itzerlan

F reword i v

Introduction v

1 Sc ope 1

2 Nor mati ve r eferenc es 1

3 Terms, definitio s and ab r eviated terms 1

3.1 Te msan definitions 1

3.2 A bbreviated te ms 2

4 Conventio s 3

5 Use case o er view and pr inciples 3

5.1 Basic principlesfor use casedefinition 3

5.2 Use case clus e s 3

6 LIN c ommunications system use case definitio 3

6.1 UC 1 LIN mas e task clus e 3

6.1.1 UC 1.1 Generate LIN frame heade 3

6.2 UC 2 LIN sla ve task clus e 4

6.2.1 UC 2.1 Br eak/sync byte field seq enc dete tor 4

6.2.2 UC 2.2 LIN fr ame pr oc s or 4

6.2.3 UC 2.3 Sla ve node config uration 4

6.2.4 UC 2.4 Sla ve e ror status r ep rting 5

6.2.5 UC 2.5 Diag nos ic sla ve node ca a i ties 5

6.3 UC 3 LIN commu ication protocol clus e 6

6.3.1 UC 3.1 Synchr onization 6

6.3.2 UC 3.2 Che ksum 6

6.3.3 UC 3.3 Sla ve bitr ate dete tion 6

6.4 UC 4 LIN physical la ye clus e 7

6.4.1 UC 4.1 Pe formanc in non-o eration sup ly v ltag e rang e 7

6.4.2 UC 4.2 L s of sup ly v ltag e 7

6.5 UC 5 LIN networ k manag ement 7

6.5.1 UC 5.1 LIN clus e networ k manag ement

7 Biblog raphy 8

ISO (he Int ernational Org nization for Stan ardization) is a worldwidefede ation of national s an ards

b dies (ISO membe b dies) The work of pr p ring Int ernational Stan ards is normaly car ied out

through ISO t ech ical committ ees Each membe b dy int er st ed in a subje t for w hich a t ech ical

committ ee has be n es a lshed has the right t o be r pr sent ed on that committ ee Int ernational

org nizations, g ove nmental an non-g ove nmental, in laison with ISO, also take part in the work

ISO cola orat es closely with the Int ernational Ele trot ech ical C mmis ion (IEC) on al matt ers of

ele trot ech ical s an ardization

The proc d r s used t o develo this document an those int en ed for it furthe maint enanc ar

desc ibed in the ISO/IEC Dir ctives, Part 1 In p rticular the dife ent a pro al c it eria ne ded for the

dife ent ty es of ISO document should be not ed This document was draft ed in ac ordanc with the

edit orial rules of the ISO/IEC Dir ctives, Part 2 ( e www.iso.org dir ctives)

A tt ention is drawn t o the p s ibi ity that some of the element of this document ma be the subje t of

p t ent right ISO shal not be held r sponsible for identifying any or al such p t ent right Detais of

any p t ent right identified d ring the develo ment of the document wi be in the Introd ction an / r

on the ISO ls of p t ent de larations r c ived ( e www.iso.org p t ent )

Any trade name used in this document is information given for the convenienc of use s an does not

cons itut e an en orsement

For an ex lanation on the meaning of ISO spe ific t erms an ex r s ions r lated to conformity as es ment,

as wel as information a out ISO’s adhe enc to the Wor ld Trade Org nization (WTO) principles in the

Te h ical Bar ie s to Trade (TBT) se the folowing URL: www.iso.org/ iso/for word.html

The committ ee r sponsible for this document is ISO/TC 2 , R oad vehicles , Subcommitt ee SC 3 , Data

c ommu ic atio

A l s of al p rt in theISO 1 98 se iescan be foun on the ISO websit e

ISO 1 9 7 (al p rt ) spe if ies the use cases, the commu ication prot ocol an the phy sical la e

r q ir ment of an in-vehicle communication network cal ed L cal Int er onne t Network (LIN)

The LIN prot ocol as pro osed is an aut omotive focused low spe d unive sal asynchronous r c ive

transmitt er (UAR T) b sed network Some of the key charact eris ics of the LIN prot ocol ar

signal-b sed communication, sched le ta le b sed frame trans e , mast er/sla e commu ication with e ror

det ection, node configuration an dia nos ic se vic transp rtation

The LIN prot ocol is for low-cos aut omotive control a plcations, for ex mple, do r mod le an air

con ition sy st ems It se ves as a communication infras ructur for low-spe d control a plcations in

vehicles b pro iding:

— signal-b sed communication t o ex chang e information between a plcations in dife ent nodes;

— bitrat e sup ort rom 1 k bit/s t o 2 k bit/s;

— det erminis ic sched le ta le-b sed frame commu ication;

— network manag ement that wakesup and put the LIN clust er int o sle p s at e in a controled man e ;

— s atus manag ement that pro ides e ror han l ng an e ror signal ng;

— transp rt la e that al ow s larg e amount of data t o be transp rt ed ( uch as dia nos ic se vic s);

— spe ification of how t o handle dia nos ic se vic s;

— ele trical phy sical la e spe ifications;

— node desc iption languag e desc ibing pro e ties of sla enodes;

— network desc iption f ile desc ibing beha iour of commu ication;

— a plcation pro ramme ’s int erfac

ISO 1 9 7 (al part ) is b sed on the o en sy st ems int er on e tion (OSI) Basic R efe enc Model as

spe if ied in ISO/IEC 749 -1 w hich s ructur s commu ication sy st ems int o seven la e s

The OSI model s ructur s data commu ication int o seven la e s caled (t op down) a plic atio la e

(la e 7), pr s entatio la e , s es s ion la e , tra s port la e , net work la e , data lnk la e an p ys ic al la e

(la e 1) A subset of these la e s is used in ISO 1 9 7 (al part )

ISO 1 9 7 (al part ) dis inguishes betwe n the se vic s pro ided b a la e t o the la e a o e it an

the prot ocol used b the la e t o sen a mes ag e betwe n thepe r entities of that la e The r ason for

this dis inction is t o make the se vic s, espe ialy the a pl cation la e se vic s an the transp rt la e

se vic s, r usa le also for othe ty es of networksthan LIN In this wa , the prot ocol is hid en from the

se vic use an it is p s ible t o chang e the prot ocol if spe ial sy st em r q ir ment deman it

ISO 1 9 7 (al p rt ) pro ides al document an r fe enc s r q ir d t o sup ort the implementation of

the r q ir ment r lat ed t o the folowing

— ISO 1 987-1: This p rt pro ides an o e view of the ISO 1 9 7 (al p rt ) an s ructur along with

the use case def initions an a common set of r sour es (definitions, r fe enc s) for use b al

subseq ent part

— ISO 1 9 7- 2: This p rt pe if ies the r q ir ment r lat ed t o the transp rt prot ocol an the network

la e r q ir ment t o transp rt he PDU of a mes ag e between LINnodes

— ISO 1 9 7-3: This part spe if ies the r q ir ment for implementations of the LIN prot ocol on the

lo ical level of a s raction Hardwar -r lat ed pro e ties ar hid en in the def ined cons raint

— ISO 1 9 7-4: This p rt spe if ies the r q ir ment for implementations of active hardwar

comp nent w hich ar ne es ary t o int er on e t the prot ocol implementation

— ISO/TR 1 9 7-5: This p rt spe ifies the LIN a pl cation pro ramme s int erfac (API) an the

node conf iguration an identif ication se vic s The node conf iguration an identif ication se vic s

ar spe ified in the API an def ine how a sla e node is con gur d an how a sla e node uses the

identif ication se vic

— ISO 1 9 7-6: This part spe ifies t es s t o che k the conformanc of the LIN prot ocol implementation

ac ording t o ISO 1 9 7- 2 an ISO 1 9 7-3 Thiscomprises t es s for the data l n layer, the network

la e an the transp rt la e

— ISO 1 9 7-7 : This part spe ifies t es s t o che k the conformanc of the LIN ele trical phy sical la e

implementation (lo ical level of a s raction)ac ording t o ISO 1 98 -4

Road vehicles — Local Interc onnect Networ k (LIN) —

Part 1:

This document gives an o e view of the s ructur an the p rtitioning of ISO 1 9 7 (al part ) In ad ition,

it outlnes the use case whe e the ISO 1 9 7 (al p rt ) wi be used The terminolo y defined in this

document is common for al LIN comm unication systems an is used throughout ISO 1 9 7 (al p rt )

This document has be n es a l shed in orde t o def ine the use cases for LIN

2 Normati ve r eferences

The folowing document ar r fe r d t o in the t ext in such a wa that some or al of their cont ent

cons itut es r q ir ment of this document F or dat ed r fe enc s, only the edition cit ed a ples F or

un at ed r fe enc s, the lat es edition of the r fe enc d document ( inclu ing any amen ment ) a ples

ISO 1 9 7-4, Ro d vehicles — L c al Inte c on ec t Net work (LIN) — Part 4: Elec tric al Ph s ic al L ye (EPL)

s pec ific atio  12 V/24  V

3 Terms, definitions and abbreviated terms

3.1 Ter ms and definitions

F or the purposes of this document, the folowing t ermsand definitions a ply

ISO an IEC maintain t erminolo ical data ases for use in s an ardization at the folowing ad r s es:

— IECEle tro edia: a aia le at ht p:/ www.ele tro edia.org

— ISO Onlne brow sing plat orm:a ai a le at ht p:/ www.iso.org o p

3.1.1

bre k field

entity that consis s of a dominant p rt, the br ak an a r c s ive p rt, the br ak del mit er

3.1.2

byte field

1 bit entity, w hich consis s of a dominant s art bit, 8 bit p y lo d (leas significant bit firs ) an a

r c s ive st op bit

3.1.3

checksum

frame ve if ication b t e

3.1.4

frame

entity that consis s of the heade an the PDU inclu ing pay lo d and a check s um (3.1.3)b t e at the en

LIN master

uniq e node in a LIN network that ched les the frames (3.1.4) an conne t ed t o a b ck b ne network

3.1.6

LIN slave

node that se ves the communication r q es s of a LIN mas te (3.1.5)

3.1 7

master task

task in the LIN mas te (3.1.5)sen ing al heade son the bus ac ording t o schedule ta le (3.1.1 )

3.1.8

node addres for dia nostic

NAD

dia nos ic ad r s as igned t o each LIN sla e (3.1.6)node

3.1 9

protected identifier

8 bit entity containing the 6 bit frame identif ie (leas signif icant bit )t og ethe with two p rity bit

3.1.1

s hedule table

l s of frames (3.1.4) spe ifies the frames, their orde an time dis anc s t o each othe used for

commu ication on the LINbus

3.1.1

slave task

task in a LIN node r sponsible for l st ening t o al heade s on the bus an r acting ac ordingly, i.e eithe

publ sh a frame r sp nse or subsc ibe t o it (or ignor it)

3.1.12

sy c b te field

b t e with f ix ed v lue locat ed betwe n the br ak field (3.1.1) an the protec ted identifie (3.1 9)

3.2 A bbreviated terms

API a plcation pro ramme s int erfac

LDF LIN desc iption f ile

OSI o en sy st ems int er onne tion

PID prot ect ed identifie

UDS unif ied dia nos ic se vic s

4 Conventions

ISO 1 9 7 (al p rt ) is b sed on the conventions spe ified in the OSI S rvic C nventions ( e

ISO/IEC 1 7 1) as they a ply for phy sical la e , data l n la e , network an transp rt prot ocol an

dia nos ic se vic s

5 Use case ov rview and principles

5.1 Basic pr inciples for use case definition

Basic principles ha e be n es a lshed as a guidelne t o def ine the use cases:

— pointing out eatur s w hich sup ort usual o e ating modes of networked sy st ems in OEM’s prod ct ;

— pointing out featur s w hich sup ort futur ex e t ed pro e ties of networked sy st ems in OEM’ s

prod ct ;

— comp ring the contras betwe n normal o e ating fu ctionalties in the a senc of e rors and l

mp-home o e ation fu ctionalties in the pr senc of e rors

5.2 Use case cluster

This subclause definesuse case clust ers of the LIN communications sy st em

Ta le 1 pro ides an o e view of the main LIN use case clust ers A main LIN use case clust er ma ha e

one or mor use case def initions

Table 1 — LIN communicatio s sy stem main use case clust er

LIN master task T e p rpose of these use cases is the des ription of LIN specif ic frame

han ling in the LINmast er node b sed on s hed le ta les comprising frame

order an timing

LIN slave task T e p rpose of these use cases is the des ription of main tasks slave nodes

Besides the frame proces ing, other tasks are reporting of er or to the LIN

network, the reconf iguration of slave nodes an dia nostic capa ilities

LIN commu ication prot ocol T e p rpose of these use cases is the des ription of the protocol-driven

property rang of systems an ap lications when using LIN for their int ernal

commu ication

LIN p y sical layer T e p rpose of these use cases is the des ription of the electrical p ysical

layer properties when inter on ecting the lo ical lin s of the distribut ed LIN

E Us by electricalhardware components inside a vehicle

LIN network mana ement T e p rpose of these use cases is the des ription of the LINnetwork

mana ement

6 LIN c ommunications system use case definition

6.1 UC 1 LIN master task cluster

6.1.1 UC 1.1 Generate LIN frame he der

Ta le 2 spe if ies the use case of the g ene ation of the LIN frame heade

Table 2 — Generate LIN frame he der

Go l R un the commu ication ac ording to the s hed le ta le

Use case in ut Sched le frame is d e for transportation

Use case outp t Generating cor ect he der

Brief des ription T e master task is responsible for g nerating cor ect he der , i.e deciding which frame

shal b sent an for maintaining the cor ect iming b tween frames

Clas if ication Man at ory

6.2 UC 2 LIN slave task cluster

6.2.1 UC 2.1 Br eak/sync byte field sequenc e detector

Ta le 3 spe if ies the use case of the br ak /sync b t e f ield seq enc det ect or

Table 3 — Bre k/sy c byte field seq ence detector

Use case name Bre k /sy c byt e f ield seq ence det ect or

Go l Monitoring for presence of bre k /sy c byte f ield

A ctor LIN slave task in a slave node

Use case in ut Operationalmode

Use case outp t Detecting the b gin ing of a new frame

Brief des ription T e detector is req ired to b sy chronized at the b gin ing of the protected identif ier of

a frame an b a le t o receive the protect ed identif ier f ield cor ectly

Clas if ication Man at ory

6.2.2 UC 2.2 LIN frame proc es or

Ta le 4 spe if ies the use case t o transmit an r c ive LIN frame r sponses

Table 4 — LIN frame proces or

Use case name LIN frame proces or

Go l Transmit ing the frame response when it is the p blisher an receiving the frame

response when it is the subs rib r

Use case in ut Be in ing of new frame

Use case outp t Transmitt ed data from an to the node

Brief des ription T e task evaluates the protected identif ier (slave node: protected identif ier is received,

mast er node: prot ect ed identif ier is taken from s hed le slot def inition), decides if the frame

is Rx, Tx or if the node is not ad res ed In case of Tx /Rx, the response data an checksum

is transmit ed/received In case of not ad res ed, the response is ignored

Clas if ication Man at ory

6.2.3 UC 2.3 Slave node c onfig uration

Ta le 5 spe if ies the use case t o pe form a slave node configuration