【英文标准名称】:Programmablecontrollers-Part5:Communications
【原文标准名称】:可编程控制器第5部分:通信
【标准号】:IEC61131-5-2000
【标准状态】:现行
【国别】:国际
【发布日期】:2000-11
【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/SC65B
【标准类型】:()
【标准水平】:()
【中文主题词】:自动化;程序设计语言;数据处理;过程自动化;控制系统;程序控制器
【英文主题词】:Applications;Automation;Communication;Communicationsystems;Communications;Control;Controlengineering;Controlprogram;Controlsystems;Controllers;Dataexchange;Dataprocessing;Datatransfer;Definitions;Electriccontrolequipment;Electricalequipment;Industrial;Industries;Informationinterchange;Informationprocessing;Lowvoltage;Low-voltageequipment;Manufacturing;Processautomation;Processcontrol;Programmable;Programmablecontrollers;Programming;Programmingdevice;Programminglanguages;Specification(approval);Stores;Switchgear;Switchgears;Telecommunications;Terminology
【摘要】:ThispartofIEC61131specifiescommunicationaspectsofaprogrammablecontroller.ItspecifiesfromtheviewpointofaPChowanydevicecancommunicatewithaPCasaserverandhowaPCcancommunicatewithanydevice.Inparticular,itspecifiesthebehaviorofthePCasitprovidesservicesonbehalfofotherdevicesandtheservicesthePCapplicationprogramcanrequestfromotherdevices.ItisnotintendedtospecifyhowanydevicecancommunicatewithanydeviceusingaPCasarouterorgateway.ThebehaviorofthePCasacommunicationclientandserverisspecifiedindependentoftheparticularcommunicationsubsystem,butthecommunicationfunctionalitymaybedependentonthecapabilitiesofthecommunicationsubsystemused.Thescopeofthispartisasubsetofthe"communicationmodel"showninfigure2ofIEC61131-3;namelyfigures2cand2dareincludedinthescopeofthispart.Additionally,themeansdefinedinthispartofIEC61131maybeusedforcommunicationswithinaprogramorbetweenprograms.ThemappingofthePCbehaviortosomeparticularcommunicationssubsystemsisprovidedintheannexes.
【中国标准分类号】:N18
【国际标准分类号】:35_240_50
【页数】:99P.;A4
【正文语种】:英语


【英文标准名称】:Plastics-Polycarbonate(PC)mouldingandextrusionmaterials-Part1:Designationsystemandbasisforspecifications
【原文标准名称】:塑料.聚碳酸酯模塑和挤塑材料.第1部分:命名体系和基本规范
【标准号】:ISO7391-1-2006
【标准状态】:现行
【国别】:国际
【发布日期】:2006-03
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:分类;模压材料;数据块;命名体制;名称与符号;模塑材料;模制材料;塑料;聚碳酸酯;特性;试验;热塑性聚合物
【英文主题词】:Classification;Compressionmouldedmaterials;Datablocks;Designationsystems;Designations;Mouldingmaterials;Mouldings(shapedsection);Plastics;Polycarbonates;Properties;Testing;Thermoplasticpolymers
【摘要】:1.1ThispartofISO7391establishesasystemofdesignationforpolycarbonatethermoplasticmaterial,whichmaybeusedasthebasisforspecifications.1.2Thetypesofpolycarbonateplasticaredifferentiatedfromeachotherbyaclassificationsystembasedonappropriatelevelsofthedesignatorypropertiesa)viscositynumber;b)meltvolume-flowrate;c)Charpyimpactstrength;andoninformationabouttheintendedapplicationand/ormethodofprocessing,importantproperties,additives,colorants,fillersandreinforcingmaterials.1.3ThispartofISO7391isapplicabletothermoplasticpolyestersofcarbonicacidandaromaticdihydroxycompounds.Thepolyestermaybeahomopolymer,acopolymeroramixtureofthetwo.Itappliestomaterialsreadyfornormaluseintheformofpowder,granulesorpelletsandtomaterialsunmodifiedormodifiedbycolorants,additives,fillers,etc.1.4Itisnotintendedtoimplythatmaterialshavingthesamedesignationgivenecessarilythesameperformance.ThispartofISO7391doesnotprovideengineeringdata,performancedataordataonprocessingconditionswhichmayberequiredtospecifyamaterialforaparticularapplicationand/ormethodofprocessing.Ifsuchadditionalpropertiesarerequired,theyshallbedeterminedinaccordancewiththetestmethodsspecifiedinPart2ofthisInternationalStandard,ifsuitable.1.5Inordertospecifyathermoplasticmaterialforaparticularapplicationortoensurereproducibleprocessing,additionalrequirementsmaybegivenindatablock5(see3.1).
【中国标准分类号】:G32
【国际标准分类号】:83_080_20
【页数】:7P;A4
【正文语种】:英语