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【英文标准名称】:Industrialcommunicationnetworks-Fieldbusspecifications-Part3-12:Data-linklayerservicedefinition-Type12elements(IEC61158-3-12:2007);EnglishversionEN61158-3-12:2008,onlyonCD-ROM
【原文标准名称】:工业通讯网络.现场总线规范.第3-12部分:数据联络层设备定义.12型元件.仅为CD-ROM
【标准号】:DINEN61158-3-12-2008
【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;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(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;信号;规范;规范(验收);传输媒质
【英文主题词】:Bussystems;Buses(dataprocessing);Circuitnetworks;Communication;Controlequipment;Controlsystems;Controltechnology;Datacommunication;Datalinklayers;Datalinksystem;Dataprocessing;Dataservices;Datatransfer;Definition;Definitions;Digital;Digitaldata;Digitalengineering;EDP;Electricalengineering;Electronicinstruments;Electronicsystems;Englishlanguage;Fieldbus;Guidancesystems;Industrial;Industrialfacilities;Informationinterchange;Informationprocessing;Informationtechnology;Interfaces(dataprocessing);Linklayers;Opensystemsinterconnection;OSI;Processcontrol;Processcontrolengineering;Processcontrolsystems;Signals;Specification;Specification(approval);Transmissionmedia
【摘要】:1.1OverviewThispartofIEC61158providescommonelementsforbasictime-criticalmessagingcommunicationsbetweendevicesinanautomationenvironment.Theterm“time-critical”isusedtorepresentthepresenceofatime-window,withinwhichoneormorespecifiedactionsarerequiredtobecompletedwithsomedefinedlevelofcertainty.Failuretocompletespecifiedactionswithinthetimewindowrisksfailureoftheapplicationsrequestingtheactions,withattendantrisktoequipment,plantandpossiblyhumanlife.ThisstandarddefinesinanabstractwaytheexternallyvisibleserviceprovidedbytheType12fieldbusdata-linklayerintermsofa)theprimitiveactionsandeventsoftheservice;b)theparametersassociatedwitheachprimitiveactionandevent,andtheformwhichtheytake;c)theinterrelationshipbetweentheseactionsandevents,andtheirvalidsequences.Thepurposeofthisstandardistodefinetheservicesprovidedto?theType12fieldbusapplicationlayerattheboundarybetweentheapplicationanddata-linklayersofthefieldbusreferencemodel;?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,nordoesitconstraintheimplementationsofdata-linkentitieswithinindustrialautomationsystems.Thereisnoconformanceofequipmenttothisdata-linklayerservicedefinitionstandard.Instead,conformanceisachievedthroughimplementationofthecorrespondingdata-linkprotocolthatfulfillstheType12data-linklayerservicesdefinedinthisstandard.
【中国标准分类号】:P76;N18
【国际标准分类号】:35_100_20;35_160;35_240_50
【页数】:44P.;A4
【正文语种】:英语


【英文标准名称】:Piezoelectricanddielectricdevicesforfrequencycontrolandselection-Glossary-Part2:Piezoelectricanddielectricfilters
【原文标准名称】:频率控制和选择用压电和介电器件术语第2部分:压电和介电滤波器
【标准号】:IEC/TS61994-2-2000
【标准状态】:作废
【国别】:国际
【发布日期】:2000-08
【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/TC49
【标准类型】:()
【标准水平】:()
【中文主题词】:电信;介电装置;电子设备及元器件;元器件;试验条件;词汇;词汇;技术术语;过滤器;介电性能;频率稳定;压电滤波器;频率选择;调查;介质;电气工程;表;压电器件;电子工程;术语;陶瓷;定义
【英文主题词】:Ceramics;Components;Definition;Definitions;Dielectric;Dielectricdevices;Dielectricproperties;Electricalengineering;Electronicengineering;Electronicequipmentandcomponents;Filters;Frequencyselection;Frequencystabilization;Glossaries;Lists;Piezoelectricdevices;Piezoelectricfilters;Surveys;Technicalterm;Telecommunication;Terminology;Testingconditions;Vocabulary
【摘要】:ThispartofIEC61994isatechnicalspecificationthatgivesthetermsanddefinitionsforpiezoelectricanddielectricfiltersrepresentingthepresentstateoftheart,whichareintendedforuseinthestandardsanddocumentsofIECtechnicalcommittee49.
【中国标准分类号】:L18
【国际标准分类号】:01_040_31;31_140
【页数】:13P.;A4
【正文语种】:英语