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IEC 61158-6-12-2010 工业通信网络.现场总线规范.第6-12部分:数据链路层协议规范.12型元件

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【英文标准名称】:Industrialcommunicationnetworks-Fieldbusspecifications-Part6-12:Applicationlayerprotocolspecification-Type12elements
【原文标准名称】:工业通信网络.现场总线规范.第6-12部分:数据链路层协议规范.12型元件
【标准号】:IEC61158-6-12-2010
【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】:应用层;应用;总线系统;总线(数据处理);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;OSI;过程控制工程;协议规范;协议;设备;传输媒质;传输协议
【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;Definitions;Digitaldata;Digitalengineering;EDP;Electricalengineering;Electronicinstruments;Electronicsystems;Fieldbus;Guidancesystems;Industrialfacilities;Informationinterchange;Informationprocessing;Informationtechnology;Interfaces(dataprocessing);Opensystemsinterconnection;Operationaltechniques;OSI;Processcontrolengineering;Protocolspecification;Protocols;Services;Transmissionmedia;Transmissionprotocol
【摘要】:TheFieldbusApplicationLayer(FAL)providesuserprogramswithameanstoaccessthefieldbuscommunicationenvironment.Inthisrespect,theFALcanbeviewedasa“windowbetweencorrespondingapplicationprograms.”Thisstandardprovidescommonelementsforbasictime-criticalandnon-time-criticalmessagingcommunicationsbetweenapplicationprogramsinanautomationenvironmentandmaterialspecifictoType12fieldbus.Theterm“time-critical”isusedtorepresentthepresenceofatime-window,withinwhichoneormorespecifiedactionsarerequiredtobecompletedwithsomedefinedlevelofcertainty.Failuretocompletespecifiedactionswithinthetimewindowrisksfailureoftheapplicationsrequestingtheactions,withattendantrisktoequipment,plantandpossiblyhumanlife.ThisstandarddefinesinanabstractwaytheexternallyvisiblebehaviorprovidedbythedifferentTypesofthefieldbusApplicationLayerintermsofa)theabstractsyntaxdefiningtheapplicationlayerprotocoldataunitsconveyedbetweencommunicatingapplicationentities,b)thetransfersyntaxdefiningtheapplicationlayerprotocoldataunitsconveyedbetweencommunicatingapplicationentities,c)theapplicationcontextstatemachinedefiningtheapplicationservicebehaviorvisiblebetweencommunicatingapplicationentities;andd)theapplicationrelationshipstatemachinesdefiningthecommunicationbehaviorvisiblebetweencommunicatingapplicationentities;and.Thepurposeofthisstandardistodefinetheprotocolprovidedtoa)definethewire-representationoftheserviceprimitivesdefinedinIEC61158-5-12,andb)definetheexternallyvisiblebehaviorassociatedwiththeirtransfer.ThisstandardspecifiestheprotocoloftheIECfieldbusApplicationLayer,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】:148P.;A4
【正文语种】:英语


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基本信息
标准名称:烟草机械 WQ321~328型滚筒式梗丝、叶丝、烟梗回潮机
英文名称:Tobacco machinery-Model WQ 321 to 328 conditioning cylinder for cut stem cut tobacco and stem
中标分类: 食品 >> 食品加工机械 >> 制烟机械
发布日期:1996-07-08
实施日期:1996-11-01
首发日期:
作废日期:2006-02-27
出版日期:
页数:10页
适用范围

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所属分类: 食品 食品加工机械 制烟机械
【英文标准名称】:Corrosionofmetalsandalloys-Corrosionfatiguetesting-Part2:crackpropagationtestingusingprecrackedspecimens.
【原文标准名称】:金属与合金的腐蚀.腐蚀疲劳试验.第2部分:使用预裂纹样品的裂纹扩展试验
【标准号】:NFA05-502-2-2002
【标准状态】:作废
【国别】:法国
【发布日期】:2002-06-01
【实施或试行日期】:2002-06-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;合金;耐腐蚀性;金属;疲劳断裂;碎裂;防裂纹扩展;试样;腐蚀;疲劳试验;试验;失败分析;扩展速度
【英文主题词】:Alloys;Breaking(sizereduction);Corrosion;Corrosionfatigue;Corrosionresistance;Corrosiontests;Crack-extension-resistance;Cracking;Crack-propagationresistance;Definition;Definitions;Failureanalysis;Fatiguecrack;Fatiguecracks;Fatiguetests;Flaws;Materialstesting;Measurement;Measuringtechniques;Metals;Propagationvelocity;Testspecimens;Testing;Testingconditions
【摘要】:
【中国标准分类号】:H25
【国际标准分类号】:77_060
【页数】:35P;A4
【正文语种】:其他