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【英文标准名称】:Electricitymetering-Dataexchangeformeterreading,tariffandloadcontrol-Part46:DatalinklayerusingHDLCprotocol
【原文标准名称】:电量测量.计数器读数、电费和负载控制的数据交换.第46部分:使用HDLC协议的数据链路层
【标准号】:IEC62056-46-2002
【标准状态】:现行
【国别】:国际
【发布日期】:2002-02
【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/TC13
【标准类型】:()
【标准水平】:()
【中文主题词】:电能;外形;电子数据交换;高级数据链路控制规程;控制规程;测量;电气工程;能量测量;负载控制;电度表;数据链层;连接模式;逻辑链路控制;数据交换;规范(验收);应用层;定义;仪表读数;电流;链路层;性能;会计;税控制;传输协议;测量仪器;数据传送;媒体访问控制
【英文主题词】:Accounts;Applicationlayer;Asynchronous;Connection-mode;Controlprocedures;Counters;Currents;Datacommunication;Dataexchange;Datalinklayers;Datalinksystem;Datatransfer;Datatransmission;Distributionofelectricity;Electricenergy;Electricalengineering;Electricitymeter;Electricitysupplymeters;ElectronicDataInterchange;Energymeasurement;Englishlanguage;High-leveldatalinkcontrol;Linklayers;LLC;Loadcontrol;LogicalLinkControl;MAC;Measurement;Measuringinstruments;Mediumaccesscontrol;Meterreading;Performance;Physicallayers;Profile;Specification(approval);Tariffcontrol;Tariffmeteringdevices;Transmissionprotocol;Whitelayers
【摘要】:ThispartofIEC62056specifiesthedatalinklayerforconnection-oriented,HDLC-based,asynchronouscommunicationprofile.Inordertoensureacoherentdatalinklayerservicespecificationforbothconnection-orientedandconnectionlessoperationmodes,thedatalinklayerisdividedintotwosub-layers:theLogicalLinkControl(LLC)sub-layerandtheMediumAccessControl(MAC)sub-layer.Thisspecificationsupportsthefollowingcommunicationenvironments:·point-to-pointandpoint-to-multipointconfigurations;·dedicatedandswitcheddatatransmissionfacilities;·half-duplexandfull-duplexconnections;·asynchronousstart/stoptransmission,with1startbit,8databits,noparity,1stopbit.Twospecialproceduresarealsodefined:·transferringofseparatelyreceivedServiceUserlayerPDUpartsfromtheservertotheclientinatransparentmanner.TheserversideServiceuserlayercangiveitsPDUtothedatalinklayerinfragmentsandthedatalinklayercanhidethisfragmentationfromtheclient;·eventreporting,bysendingUIframesfromthesecondarystationtotheprimarystation.AnnexBgivesanexplanationoftheroleofdatamodelsandprotocolsinelectricitymeterdataexchange.
【中国标准分类号】:N22
【国际标准分类号】:35_100_20;91_140_50
【页数】:69P.;A4
【正文语种】:英语


【英文标准名称】:StandardSpecificationforSelf-SupportedSprayAppliedCellulosicThermalInsulation
【原文标准名称】:自支撑喷涂纤维素质绝热材料的标准规范
【标准号】:ASTMC1149-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:C16.23
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:cellulose;self-supportingthermalinsulation;spray-applied;Cellulosefiberthermalinsulation--specifications;Chemically-treatedcellulosicmaterials;Combustion;Corrosivity;Fungalinfluence/resistance;Moistureabsorption;Odor--thermalinsulatio
【摘要】:1.1Thespecificationcoversthephysicalpropertiesofself-supportedsprayappliedcellulosicfibersintendedforuseasthermalinsulationoranacousticalabsorbentmaterial,orboth.1.2Thisspecificationcoverschemicallytreatedcellulosicmaterialsintendedforpneumaticapplicationswheretemperaturesdonotexceed82.2x00B0;Candwheretemperatureswillroutinelyremainbelow65.6x00B0;C.1.2.1TypeI8212;Materialappliedwithliquidadhesiveandsuitableforeitherexposedorenclosedapplications.1.2.2TypeII8212;Materialscontainingadryadhesivethatisactivatedbywaterduringinstallationandintendedonlyforenclosedorcoveredapplications.1.3Thisisamaterialspecificationonlyandisnotintendedtodealwithmethodsofapplicationthataresuppliedbythemanufacturer.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q25
【国际标准分类号】:91_120_10
【页数】:8P.;A4
【正文语种】:英语