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【英文标准名称】:Industrialcommunicationnetworks-Fieldbusspecifications-Applicationlayerservicedefinition-Type8elements
【原文标准名称】:工业通信网络.数据总线规范.应用层设备定义.8型元件
【标准号】:BSEN61158-5-8-2008
【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】:应用层;应用;总线系统;总线;电路网络;通信;计算机应用;计算机控制;控制;控制设备;控制系统;控制工艺学;数据总线;数据通信;数据交换;数据传输线;数据连接系统;数据网络;数据处理;数据设备;数据传送;数据传输控制规程;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(数据处理);开放系统互连;操作技术;过程控制工程;设备;规范;规范(验收);传输媒质
【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;Processcontrolengineering;Services;Specification;Specification(approval);Transmissionmedia
【摘要】:Thisstandardprovidescommonelementsforbasictime-criticalandnon-time-criticalmessagingcommunicationsbetweenapplicationprogramsinanautomationenvironmentandmaterialspecifictoType8fieldbus.Theterm“time-critical”isusedtorepresentthepresenceofatime-window,withinwhichoneormorespecifiedactionsarerequiredtobecompletedwithsomedefinedlevelofcertainty.Failuretocompletespecifiedactionswithinthetimewindowrisksfailureoftheapplicationsrequestingtheactions,withattendantrisktoequipment,plantandpossiblyhumanlife.ThisstandarddefinesinanabstractwaytheexternallyvisibleserviceprovidedbytheType8fieldbusapplicationlayerintermsofa)anabstractmodelfordefiningapplicationresources(objects)capableofbeingmanipulatedbyusersviatheuseoftheFALservice,b)theprimitiveactionsandeventsoftheservice;c)theparametersassociatedwitheachprimitiveactionandevent,andtheformwhichtheytake;andd)theinterrelationshipbetweentheseactionsandevents,andtheirvalidsequences.Thepurposeofthisstandardistodefinetheservicesprovidedto1)theFALuserattheboundarybetweentheuserandtheapplicationlayerofthefieldbusreferencemodel,and2)SystemsManagementattheboundarybetweentheapplicationlayerandSystemsManagementofthefieldbusreferencemodel.ThisstandardspecifiesthestructureandservicesoftheType8fieldbusapplicationlayer,inconformancewiththeOSIBasicReferenceModel(ISO/IEC7498)andtheOSIapplicationlayerstructure(ISO/IEC9545).Theprincipalobjectiveofthisstandardistospecifythecharacteristicsofconceptualapplicationlayerservicessuitablefortime-criticalcommunications,andthussupplementtheOSIBasicReferenceModelinguidingthedevelopmentofapplicationlayerprotocolsfortimecriticalcommunications.Asecondaryobjectiveistoprovidemigrationpathsfrompreviously-existingindustrialcommunicationsprotocols.ItisthislatterobjectivewhichgivesrisetothediversityofservicesstandardizedasthevariousTypesofIEC61158,andthecorrespondingprotocolsstandardizedinsubpartsofIEC61158-6.Thisspecificationmaybeusedasthebasisforformalapplicationprogramminginterfaces.Nevertheless,itisnotaformalprogramminginterface,andanysuchinterfacewillneedtoaddressimplementationissuesnotcoveredbythisspecification,includinga)thesizesandoctetorderingofvariousmulti-octetserviceparameters,andb)thecorrelationofpairedrequestandconfirm,orindicationandresponse,primitives.
【中国标准分类号】:M11
【国际标准分类号】:35_100_70;35_160;35_240_50
【页数】:96P.;A4
【正文语种】:英语


【英文标准名称】:Distributionautomationusingdistributionlinecarriersystems-Part5-2:Lowerlayerprofiles-FrequencyShiftKeying(FSK)profile
【原文标准名称】:采用配电线载波系统的配电自动化第5-2部分:低层文件集频移键控(FSK)文件集
【标准号】:IEC/TR261334-5-2-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-05
【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/TC57
【标准类型】:()
【标准水平】:()
【中文主题词】:传输协议;物理层;信息处理;通信系统;网络控制系统;自动化;数据传送;调频;配电线路;遥控技术;数据通信
【英文主题词】:Automation;Communicationsystems;Datacommunication;Datatransfer;Distributionlines;Frequencymodulation;Informationprocessing;Networkcontrolsystem;Physicallayers;Remotecontroltechnology;Transmissionprotocol
【摘要】:Thistechnicalreportoftype2describesalowerlayerprofilethatincludesthemediumaccesscontrol(MAC)sublayer,thephysicalsignalling(PLS)sublayerandthemainsattachmentunits(MAU),withthepurposeofgivingacontributiontobuildupasetofstandardsforeffectivecommunicationonMVandLVnetworkfordistributionlinecarrier(DLC)systems.ThisprofileusestheFSKmodulationtechniquethatofferstheadvantagesoflowcostimplementation,robustnessandimmunityagainstnoiseandinterferences.Furthermore,thetransmissionqualityispredictableknowingfewparametersofthetransmissionmedium.Usingstandardelectricalsignalinterfacetothemodem,theprofileiseffectivefordifferentmodulationtechniques.DifferenttechnicalapproachesindevelopingcommunicationforDLCsystemsareinprogress.Asaconsequence,atpresentdifferentlowlevelprofilesarefeasiblewithacceptableresultsintermsofperformanceandcost-effectiveness.Inmanycases,thedifferencesamongstsolutionsareminoranditispossibletofindacommonroot.Thisreportdescribesalowlevelprofilethatassemblessomecommonexperience.Accordingtothestructureoftheopensysteminterconnectionmodel,thelowlevelprofileshouldpresentastandardinterfacetothelogicallinkcontrol(LLC)sublayerandconsistsofsublayerssuchastheMACsublayer,PLSandMAU,thatpresentwell-definedinterfacetoeachother.TheMACsublayerheredescribedinterfacesboththeLLCconnectionless(CL)(seeIEC61334-4-32)andtheLLCconnectionoriented(CO)(seeIEC61334-4-33).TheuseoftheMACinthetwocasesisdifferentduetotheframelengthandtheframesequenceonthemedium.Toimprovetheefficiencyofthecommunication,differentclassesofservicearegiven.Theproperuseoftheclassofserviceandrelatedparametersallowuserscontrolofthetransferandwaitingtimeoftheprocessesinvolvedinthetransmission.
【中国标准分类号】:F21
【国际标准分类号】:33_040_60;35_100_05
【页数】:
【正文语种】:英语