【英文标准名称】:Industrialcommunicationnetworks-Fieldbusspecifications-Part3-16:Data-linklayerservicedefinition-Type16elements
【原文标准名称】:工业通讯网络.现场总线规范.第3-16部分:数据联络层设备定义.16型元件
【标准号】:IEC61158-3-16-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-12
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC65C
【标准类型】:()
【标准水平】:()
【中文主题词】:总线系统;总线;电路网络;通信;控制设备;控制系统;控制工艺学;数据通信;数据链层;数据连接系统;数据处理;数据设备;数据传送;定义;数字的;数字数据;数字工程;电子数据处理;电气工程;电子仪器;电子系统;现场总线;制导系统;工业的;工业设施;信息交换;信息处理;信息技术;接口;链路层;开放系统互连;OSI;过程控制;过程控制工程;过程控制系统;信号;规范;规范(验收);传输媒质
【英文主题词】:Bodies;Bussystems;Buses(dataprocessing);Circuitnetworks;Codenumbers;Communication;Communicationmedia;Communicationsystems;Communicationtechnology;Control;Controlandcomputertechnology;Controlequipment;Controlsystems;Controltechnology;Controls;Cycle-time;Data;Datacommunication;Datalinklayers;Datalinksystem;Dataprocessing;Datarates;Dataservices;Datatransfer;Definitions;Digital;Digitaldata;Digitalengineering;EDP;Electricmachines;Electricalequipment;Electronicinstruments;Electronicsystems;Fieldbus;Guidancesystems;Industrial;Industrialfacilities;Industrialmachines;Informationinterchange;Informationprocessing;Informationtechnology;Initialization;Interfaces;Interfaces(dataprocessing);Linklayers;Machines;Mechanicalengineering;Numericalcontrol;Opensystemsinterconnection;OSI;Powertransmissionsystems;Processcontrol;Processcontrolengineering;Processcontrolsystems;Real-time;Real-timesystems;Serial;Signals;Specification;Specification(approval);Structure;Surveillance(approval);Transmission;Transmissionmedia
【摘要】:1.1OverviewThisstandardprovidescommonelementsforbasictime-criticalmessagingcommunicationsbetweendevicesinanautomationenvironment.Theterm“time-critical”isusedtorepresentthepresenceofatime-window,withinwhichoneormorespecifiedactionsarerequiredtobecompletedwithsomedefinedlevelofcertainty.Failuretocompletespecifiedactionswithinthetimewindowrisksfailureoftheapplicationsrequestingtheactions,withattendantrisktoequipment,plantandpossiblyhumanlife.ThisstandarddefinesinanabstractwaytheexternallyvisibleserviceprovidedbytheType16fieldbusdata-linklayerintermsofa)theprimitiveactionsandeventsoftheservice;b)theparametersassociatedwitheachprimitiveactionandevent,andtheformwhichtheytake;andc)theinterrelationshipbetweentheseactionsandevents,andtheirvalidsequences.Thepurposeofthisstandardistodefinetheservicesprovidedto?theType16fieldbusapplicationlayerattheboundarybetweentheapplicationanddatalinklayersofthefieldbusreferencemodel,and?systemsmanagementattheboundarybetweenthedata-linklayerandsystemsmanagementofthefieldbusreferencemodel.1.2SpecificationsTheprincipalobjectiveofthisstandardistospecifythecharacteristicsofconceptualdata-linklayerservicessuitablefortime-criticalcommunications,andthussupplementtheOSIBasicReferenceModelinguidingthedevelopmentofdata-linkprotocolsfortime-criticalcommunications.Asecondaryobjectiveistoprovidemigrationpathsfrompreviously-existingindustrialcommunicationsprotocols.ThisspecificationmaybeusedasthebasisforformalDL-Programming-Interfaces.Nevertheless,itisnotaformalprogramminginterface,andanysuchinterfacewillneedtoaddressimplementationissuesnotcoveredbythisspecification,includinga)thesizesandoctetorderingofvariousmulti-octetserviceparameters,andb)thecorrelationofpairedrequestandconfirm,orindicationandresponse,primitives.1.3ConformanceThisstandarddoesnotspecifyindividualimplementationsorproducts,nordotheyconstraintheimplementationsofdata-linkentitieswithinindustrialautomationsystems.Thereisnoconformanceofequipmenttothisdata-linklayerservicedefinitionstandard.Instead,conformanceisachievedthroughimplementationofthecorrespondingdata-linkprotocolthatfulfillstheType16data-linklayerservicesdefinedinthisstandard.
【中国标准分类号】:N18;P76
【国际标准分类号】:25_040_40;35_100_20;35_160
【页数】:30P;A4
【正文语种】:英语


Product Code:SAE J1959
Title:Corrosion Preventive Compound, Underbody Vehicle Corrosion Protection
Issuing Committee:Automotive Corrosion And Prevention Committee
Scope:This specification covers underbody corrosion preventive compounds for application to vehicle underbodies. This document contains reference to certain automotive industry tests, it only reflects interest in selecting what is felt to be the easiest and most useful tests for evaluation of rust corrosion preventatives, and does not suggest that the tests of other vehicle manufacturers are of lesser value or validity.