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DIN EN 61158-4-18-2008 工业通讯网络.现场总线规范.第4-18部分:数据联络层协议规范.18型元件.仅为CD-ROM

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【英文标准名称】:Industrialcommunicationnetworks-Fieldbusspecifications-Part4-18:Data-linklayerprotocolspecification-Type18elements(IEC61158-4-18:2007);EnglishversionEN61158-4-18:2008,onlyonCD-ROM
【原文标准名称】:工业通讯网络.现场总线规范.第4-18部分:数据联络层协议规范.18型元件.仅为CD-ROM
【标准号】:DINEN61158-4-18-2008
【标准状态】:作废
【国别】:德国
【发布日期】:2008-09
【实施或试行日期】:2008-09-01
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【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;数字信号;电子数据处理;电气工程;电子仪器;电子系统;英语;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;接口(数据处理);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;协议规范;协议;信号;规范;规范(验收);传输媒质;传输协议
【英文主题词】:Bussystems;Buses(dataprocessing);Circuitnetworks;Communication;Controlequipment;Controlsystems;Controltechnology;Datacommunication;Datalinklayers;Datalinksystem;Dataprocessing;Dataservices;Datatransfer;Definition;Definitions;Digital;Digitaldata;Digitalengineering;Digitalsignals;EDP;Electricalengineering;Electronicinstruments;Electronicsystems;Englishlanguage;Fieldbus;Guidancesystems;Industrial;Industrialfacilities;Informationinterchange;Informationprocessing;Informationtechnology;Interfaces;Interfaces(dataprocessing);Linklayers;Opensystemsinterconnection;OSI;Processcontrol;Processcontrolengineering;Processcontrolsystems;Protocolspecification;Protocols;Signals;Specification;Specification(approval);Transmissionmedia;Transmissionprotocol
【摘要】:1.1GeneralThedata-linklayerprovidesbasictime-criticalmessagingcommunicationsbetweendevicesinanautomationenvironment.Thisprotocolprovidescommunicationopportunitiestoallparticipatingdata-linkentitiesa)inasynchronously-startingcyclicmanner,accordingtoapre-establishedschedule,andb)inacyclicoracyclicasynchronousmanner,asrequestedeachcyclebyeachofthosedata-linkentities.Thusthisprotocolcanbecharacterizedasonewhichprovidescyclicandacyclicaccessasynchronouslybutwithasynchronousrestartofeachcycle.1.2SpecificationsThispartofIEC61158specifiesa)proceduresforthetimelytransferofdataandcontrolinformationfromonedata-linkuserentitytoapeeruserentity,andamongthedata-linkentitiesformingthedistributeddata-linkserviceprovider;b)proceduresforgivingcommunicationsopportunitiestoallparticipatingDL-entities,sequentiallyandinacyclicmannerfordeterministicandsynchronizedtransferatcyclicintervalsuptoonemillisecond;c)proceduresforgivingcommunicationopportunitiesavailablefortime-criticaldatatransmissiontogetherwithnon-time-criticaldatatransmissionwithoutprejudicetothetime-criticaldatatransmission;d)proceduresforgivingcyclicandacycliccommunicationopportunitiesfortime-criticaldatatransmissionwithprioritizedaccess;e)proceduresforgivingcommunicationopportunitiesbasedonstandardISO/IEC8802-3mediumaccesscontrol,withprovisionsfornodestobeaddedorremovedduringnormaloperation;f)thestructureofthefieldbusDLPDUsusedforthetransferofdataandcontrolinformationbytheprotocolofthisstandard,andtheirrepresentationasphysicalinterfacedataunits.1.3ProceduresTheproceduresaredefinedintermsofa)theinteractionsbetweenpeerDL-entities(DLEs)throughtheexchangeoffieldbusDLPDUs;b)theinteractionsbetweenaDL-service(DLS)providerandaDLS-userinthesamesystemthroughtheexchangeofDLSprimitives;c)theinteractionsbetweenaDLS-providerandaPh-serviceproviderinthesamesystemthroughtheexchangeofPh-serviceprimitives.1.4ApplicabilityTheseproceduresareapplicabletoinstancesofcommunicationbetweensystemswhichsupporttime-criticalcommunicationsserviceswithinthedata-linklayeroftheOSIorfieldbusreferencemodels,andwhichrequiretheabilitytointerconnectinanopensystemsinterconnectionenvironment.Profilesprovideasimplemulti-attributemeansofsummarizinganimplementation’scapabilities,andthusitsapplicabilitytovarioustime-criticalcommunicationsneeds.1.5ConformanceThispartofIEC61158doesnotspecifyindividualimplementationsorproducts,nordotheyconstraintheimplementationsofdata-linkentitieswithinindustrialautomationsystems.Thereisnoconformanceofequipmenttothisdata-linklayerservicedefinitionstandard.Instead,conformanceisachievedthroughimplementationofthecorrespondingdata-linkprotocolthatfulfillstheType18data-linklayerservicesdefinedinthisstandard.
【中国标准分类号】:N18;P76
【国际标准分类号】:35_100_20;35_160;35_240_50
【页数】:41P.;A4
【正文语种】:英语


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【英文标准名称】:Steel,SheetandStrip,Carbon,DrawingQuality,SpecialKilled,Hot-Rolled
【原文标准名称】:特殊脱氧拉伸级热轧碳素钢薄板和带材
【标准号】:ASTMA622/A622M-1992
【标准状态】:作废
【国别】:美国
【发布日期】:1992
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:钢;拉制;碳素钢;带钢;热轧的;脱氧钢;薄板材
【英文主题词】:carbonsteels;killedsteels;sheetmaterials;steels;drawing(formingprocess);hotrolled;stripsteels
【摘要】:
【中国标准分类号】:H46
【国际标准分类号】:77_140_50
【页数】:2P;A4
【正文语种】:英语


【英文标准名称】:Milk,milkproductsandmesophilicstartercultures-Enumerationofcitrate-fermentinglacticacidbacteria-Colony-counttechniqueat25°C
【原文标准名称】:牛奶、奶制品和发酵剂培养物.柠檬酸盐发酵乳酸菌的计数.25℃菌落计数技术
【标准号】:BSISO17792-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2008-06-30
【实施或试行日期】:2008-06-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:农产品;总量;细菌纲;细菌培养;柠檬酸含量;菌落计数技术;计数;培养(生物);乳制品分析;乳制品;定义;测定;食品;玻璃器皿;解释;研究;实验室试验;实验室器皿;乳酸;乳酸菌;介质;微生物的;微生物分析;微菌落计数;微生物;牛奶;基准方法;抽样方法;测试;试验
【英文主题词】:Agriculturalproducts;Amount;Bacteria;Bacteriacultures;Citratecontent;Colonycounttechniques;Counting;Cultures(biology);Dairyanalysis;Dairyproducts;Definition;Definitions;Determination;Foodproducts;Glassware;Interpretations;Investigations;Laboratorytesting;Laboratoryware;Lacticacid;Lacticacidbacteria;Medium;Microbiological;Microbiologicalanalysis;Microcolonycounts;Microorganisms;Milk;Referencemethods;Samplingmethods;Testing;Tests
【摘要】:
【中国标准分类号】:X16
【国际标准分类号】:67_100_01
【页数】:22P.;A4
【正文语种】:英语



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