作者:标准资料网 时间:2024-05-17 15:31:39   浏览:8136   来源:标准资料网

【英文标准名称】:Digitaldatacommunicationsformeasurementandcontrol-Fieldbusforuseinindustrialcontrolsystems-Applicationlayerservicedefinition
【原文标准名称】:测量和控制用数字数据通信.工业控制系统用现场总线.应用层服务定义
【标准号】:BSEN61158-5-2004
【标准状态】:作废
【国别】:英国
【发布日期】:2004-08-31
【实施或试行日期】:2004-08-31
【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】:数据通信;传播学;数字工程;数据传输线;数据服务;操作技术;工业设施;工业的;数字数据;信息技术;应用层;服务设施;电子仪器;制导系统;开放系统互连;开放系统互连;传输媒质;电气工程;计算机控制;数据传送;数据连接系统;总线系统;使用;电子数据处理;规范(验收);数据总线;计算机应用;数据处理;物理层;规范;控制;控制系统;电路网络;信息交换;控制设备;现场总线;总线;数据传输控制规程;过程控制工程;电子系统;控制工艺学;定义;数字的;接口(数据处理);数据网络;信息处理;数据交换
【英文主题词】:Applicationlayer;Applications;Bussystems;Buses(dataprocessing);Circuitnetworks;Communication;Computerapplications;Computerizedcontrol;Control;Controlequipment;Controlsystems;Controltechnology;Databus;Datacommunication;Dataexchange;Dataline;Datalinksystem;Datanetwork;Dataprocessing;Dataservices;Datatransfer;Datatransmissioncontrolprocedures;Definition;Definitions;Digital;Digitaldata;Digitalengineering;EDP;Electricalengineering;Electronicinstruments;Electronicsystems;Fieldbus;Guidancesystems;Industrial;Industrialfacilities;Informationinterchange;Informationprocessing;Informationtechnology;Interfaces(dataprocessing);Opensystemsinterconnection;Operationaltechniques;OSI;Physicallayers;Processcontrolengineering;Services;Specification;Specification(approval);Transmissionmedia
【摘要】:ThefieldbusApplicationLayer(FAL)providesuserprogramswithameanstoaccessthefieldbuscommunicationenvironment.Inthisrespect,theFALcanbeviewedasa"windowbetweencorrespondingapplicationprograms."TheFALisanApplicationLayerCommunicationStandarddesignedtosupporttheconveyanceoftime-criticalandnon-time-criticalapplicationrequestsandresponsesamongdevicesinanautomationenvironment.Theterm"time-critical"isusedtorepresentthepresenceofanapplicationtime-window,withinwhichoneormorespecifiedactionsarerequiredtobecompletedwithsomedefinedlevelofcertainty.ThisstandardspecifiesthestructureandservicesoftheIECfieldbusApplicationLayer.ItisspecifiedinconformancewiththeOSIBasicReferenceModel(ISO/IEC7498)andtheOSIApplicationLayerStructure(ISO/IEC9545).FALservicesandprotocolsareprovidedbyFALapplication-entities(AE)containedwithintheapplicationprocesses.TheFALAEiscomposedofasetofobject-orientedApplicationServiceElements(ASEs)andaLayerManagementEntity(LME)thatmanagestheAE.TheASEsprovidecommunicationservicesthatoperateonasetofrelatedapplicationprocessobject(APO)classes.OneoftheFALASEsisamanagementASEthatprovidesacommonsetofservicesforthemanagementoftheinstancesofFALclasses.ThispartofIEC61158specifiesinteractionsbetweenremoteapplicationsintermsof-anabstractmodelfordefiningapplicationresources(objects)capableofbeingmanipulatedbyusersviatheuseofFALServices,-theprimitives(interactionsbetweentheFALandtheFALuser)associatedwitheachFALService;-theparametersassociatedwitheachprimitive;-theinterrelationshipbetweenandthevalidsequencesoftheprimitivesforeachservice.Severalmodelsofcommunicationsarespecifiedinthisdocument.Eachmodelisspecifedasacommunciation"type".Eachtypehasitsownseparateclauseinthedocument.Althoughtheseservicesspecify,fromtheperspectiveofapplications,howrequestandresponsesareissuedanddelivered,theydonotincludeaspecificationofwhattherequestingandrespondingapplicationsaretodowiththem.Thatis,thebehavioralaspectsoftheapplicationsarenotspecified;onlyadefinitionofwhatrequestsandresponsestheycansend/receiveisspecified.ThispermitsgreaterflexibilitytotheFALusersinstandardizingsuchobjectbehavior.Inadditiontotheseservices,somesupportingservicesarealsodefinedinthisstandardtoprovideaccesstotheFALtocontrolcertainaspectsofitsoperation.
【中国标准分类号】:N17
【国际标准分类号】:35_100_70;35_160;35_240_50
【页数】:1290P.;A4
【正文语种】:英语