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IEC 61158-5-20-2010 工业通讯网络.现场总线规范.第5-20部分:应用层设备定义.20型元件

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【英文标准名称】:Industrialcommunicationnetworks-Fieldbusspecifications-Part5-20:Applicationlayerservicedefinition-Type20elements
【原文标准名称】:工业通讯网络.现场总线规范.第5-20部分:应用层设备定义.20型元件
【标准号】:IEC61158-5-20-2010
【标准状态】:现行
【国别】:国际
【发布日期】:2010-08
【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/SC65C
【标准类型】:()
【标准水平】:()
【中文主题词】:总线系统;总线(数据处理);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;现场总线;制导系统;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;物理层;过程控制;过程控制工程;过程控制系统;协议规范;协议;信号;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;Definitions;Digitaldata;Digitalengineering;Digitalsignals;EDP;Electricalengineering;Electronicinstruments;Electronicsystems;Fieldbus;Guidancesystems;Industrialfacilities;Informationinterchange;Informationprocessing;Informationtechnology;Interfaces;Interfaces(dataprocessing);Linklayers;Opensystemsinterconnection;OSI;Physicallayers;Processcontrol;Processcontrolengineering;Processcontrolsystems;Protocolspecification;Protocols;Signals;Transmissionmedia;Transmissionprotocol
【摘要】:ThefieldbusApplicationLayer(FAL)providesuserprogramswithameanstoaccessthefieldbuscommunicationenvironment.Inthisrespect,theFALcanbeviewedasa“windowbetweencorrespondingapplicationprograms.”ThispartofIEC61158providescommonelementsforbasictime-criticalandnon-time-criticalmessagingcommunicationsbetweenapplicationprogramsinanautomationenvironmentandmaterialspecifictoType20fieldbus.Theterm“time-critical”isusedtorepresentthepresenceofatime-window,withinwhichoneormorespecifiedactionsarerequiredtobecompletedwithsomedefinedlevelofcertainty.Failuretocompletespecifiedactionswithinthetimewindowrisksfailureoftheapplicationsrequestingtheactions,withattendantrisktoequipment,plantandpossiblyhumanlife.ThisstandarddefinesinanabstractwaytheexternallyvisibleserviceprovidedbythedifferentTypesofthefieldbusApplicationLayerintermsofa)anabstractmodelfordefiningapplicationresources(objects)capableofbeingmanipulatedbyusersviatheuseoftheFALservice,b)theprimitiveactionsandeventsoftheservice;c)theparametersassociatedwitheachprimitiveactionandevent,andtheformwhichtheytake;andd)theinterrelationshipbetweentheseactionsandevents,andtheirvalidsequences.Thepurposeofthisstandardistodefinetheservicesprovidedtoa)theFALuserattheboundarybetweentheuserandtheApplicationLayeroftheFieldbusReferenceModel,andb)SystemsManagementattheboundarybetweentheApplicationLayerandSystemsManagementoftheFieldbusReferenceModel.ThisstandardspecifiesthestructureandservicesoftheIECfieldbusApplicationLayer,inconformancewiththeOSIBasicReferenceModel(ISO/IEC7498)andtheOSIApplicationLayerStructure(ISO/IEC9545).FALservicesandprotocolsareprovidedbyFALapplication-entities(AE)containedwithintheapplicationprocesses.TheFALAEiscomposedofasetofobject-orientedApplicationServiceElements(ASEs)andaLayerManagementEntity(LME)thatmanagestheAE.TheASEsprovidecommunicationservicesthatoperateonasetofrelatedapplicationprocessobject(APO)classes.OneoftheFALASEsisamanagementASEthatprovidesacommonsetofservicesforthemanagementoftheinstancesofFALclasses.Althoughtheseservicesspecify,fromtheperspectiveofapplications,howrequestandresponsesareissuedanddelivered,theydonotincludeaspecificationofwhattherequestingandrespondingapplicationsaretodowiththem.Thatis,thebehavioralaspectsoftheapplicationsarenotspecified;onlyadefinitionofwhatrequestsandresponsestheycansend/receiveisspecified.ThispermitsgreaterflexibilitytotheFALusersinstandardizingsuchobjectbehavior.Inadditiontotheseservices,somesupportingservicesarealsodefinedinthisstandardtoprovideaccesstotheFALtocontrolcertainaspectsofitsoperation.
【中国标准分类号】:M11
【国际标准分类号】:25_04_40;35_100_70;35_110
【页数】:52P.;A4
【正文语种】:英语


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【英文标准名称】:StandardTerminologyRelatingtoFormed-in-PlaceSealantsforJointsandCracksinPavements
【原文标准名称】:与路面接合点和裂纹用现场密封胶相关的标准术语
【标准号】:ASTMD5535-1998
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【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】:接合密封胶;路面;密封层(剂);术语
【英文主题词】:Jointsealants;Pavement;Sealants;Terminology
【摘要】:
【中国标准分类号】:P66;Q20
【国际标准分类号】:91_100_50;93_080_20
【页数】:1P;A4
【正文语种】:英语


【英文标准名称】:StandardSpecificationforPerformanceofGasketedMechanicalCouplingsforUseinPipingApplications
【原文标准名称】:管道用装衬垫的机械联接器性能的标准规范
【标准号】:ASTMF1476-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:F25.11
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:配件;衬垫;工作性能;管联接器
【英文主题词】:coupling;flexible;gasketed;grooved;plainend;rigid;Bendingmoment;Couplingsspecifications;Flexibility;Flexiblemechanicalcouplings;Gasketedmechanicalcouplings(GMC);Grooved-typemechanicalcouplings;Hydrostatictesting;Mechanicalre
【摘要】:1.1Thisspecificationprovidestheperformancecharacteristicsandqualificationtestsrequiredforgasketedmechanicalcouplingsincludinggrooved-typemechanicalcouplingsforgroovedendpipe,mechanicalrestraintcouplingsforplainendpipeandmechanicalcompressioncouplingsforplainendpipe.Thesecouplingsareforuseattemperatureswithintherecommendedtemperaturerangeoftheirrespectivegaskets.Consultmanufacturerfordetails.1.2Thevaluesstatedinmetricunits(SI)aretoberegardedasthestandard.Thevaluesgiveninparentheses(inch/pound)areprovidedforinformationpurposes.1.3Measuringandtestequipment(Mx0026;TE)usedintheperformanceofthetestsdescribedhereinshallbecalibratedusingequipmentwhichistraceabletotheNationalInstituteofStandardsandTechnology(NIST)orcalibratedinaccordancewiththerequirementsdetailedinBS5781Part1againststandardstraceabletoNationalStandards.1.4Asthisisnotadimensionalstandard,nordoesitcontaincomponentdimensions,theintermixingofsub-componentssuchasgasketsandhousingsbetweenmanufacturersisnotrecommendedandconstitutesnon-conformancewiththisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J15
【国际标准分类号】:23_040_60
【页数】:17P.;A4
【正文语种】:



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