ANSI/IEEE 802.16k-2007 局域网和城域网用标准:媒体访问控制(MAC)桥.修改件2:IEEE802.16的桥接
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【英文标准名称】:StandardforLocalandMetropolitanAreaNetworks:MediaAccessControl(MAC)Bridges-Amendment2:BridgingofIEEE802.16
【原文标准名称】:局域网和城域网用标准:媒体访问控制(MAC)桥.修改件2:IEEE802.16的桥接
【标准号】:ANSI/IEEE802.16k-2007
【标准状态】:作废
【国别】:美国
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:通路;空气接口;宽带网络;数据网络;数据处理;数据传送;定义;信息技术;接口;接口(数据处理);LAN;局域网;MAN;城域网;无线通信业务
【英文主题词】:Access;Airinterfaces;Broadbandnetwork;Datanetwork;Dataprocessing;Datatransfer;Definitions;Informationtechnology;Interfaces;Interfaces(dataprocessing);LAN;Localareanetworks;MAN;Metropolitanareanetworks;Wirelesscommunicationservices
【摘要】:ThisdocumentamendsIEEEStd802.1D,aspreviouslyamendedbyIEEE802.17a-2004,tosupportbridgingoftheIEEE802.16mediumaccesscontrol(MAC).
【中国标准分类号】:M11
【国际标准分类号】:35_110;35_200
【页数】:
【正文语种】:英语
【英文标准名称】:Numericalcontrolofmachines;Operationalcommandanddataformat
【原文标准名称】:机床数字控制工作指令和数据格式
【标准号】:ISO/TR6132-1981
【标准状态】:现行
【国别】:国际
【发布日期】:1981-08
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC184
【标准类型】:()
【标准水平】:()
【中文主题词】:维修说明书;机床;数字控制机床;数据处理;控制规程;信息块格式;数值控制;数据布置;符号;技术数据单;高级数据链路控制规程
【英文主题词】:
【摘要】:1DatatypesThenumericalcontrolsystemsaddressedbythisTechnicalReportuseacombinationoftwotypesofdata:1)Machineprogramdata—DataformattedinaccordancewithISO2539andcodedinaccordancewithISO840.2)Operationalstatements—Machineset-up,initializationand/oroperationalparameterdataformattedinaccordancewiththisTechnicalReportandcodedinaccordancewithISO646.Charactersubset:0-80-90-100-13charactersofcolumn2except2-7charactersofcolumn3except3-11and3-15charactersofcolumn4except4-0charactersofcolumn5characters7-12and7-152OperationalstatementsItisnotexpectedthatallNCsystemswillembodyallthefeaturesandcapabilitiesforwhichoperationalstatementshavebeendefinedinthisTechnicalReport.WhenanNCsystemhasthecapabilitytoenteroperationalstatements,themnemonicsandformatsdefinedinthisTechnicalReportshallbeused.ItisnotintendedthatthefunctionsdefinedhereinshalllimitthecapabilitiesofNCsystems;ad-ditionalfunctionsandoperationalstatementsmaybedefinedandimplementedbythecontrolbuilderasrequired.Itisalsoexpectedthatinsomeinstances,acontrolbuildermay,athisdiscretion,implementoneormoreofthefunctionsdefinedhereinexclusivelywithpushbuttonswitchesorotherconventionaloperatorcontrols.Ifthesefunctionsarelabelledinanabbreviatedormnemonicfashion,themnemonicsdefinedinthisTechnicalReportshallbeused.3HardwareconfigurationThisTechnicalReportdealswithnumericalcontrolsystemswhichmayassumeanyofawidevarietyofhardwareconfigurationsac-cordingtothepurposeandcapabilitiesrequiredofthesystem.Figure1showsanumericalcontrolsystemcontainingseveraltypesofperipheralhardware.TheprimaryconcernofthisTechnicalReportistheformofthedatapreparedbythepartprogrammerorin-troducedbytheoperatorintothenumericalcontrolsystemthroughoneormoreofthesedevices.Ingeneral,thesedatacanbeeither"machineprogramdata"or"operationalstatements".BinarydatainterchangeinformatsnotconformingtothisTechnicalReportmaybeutilizedwithinoramongvariousdevices,attheconvenienceofthecontrolbuilder,wheneversuchinterchangeistransparenttotheuser.Figure1suggestssomeofthepossibletypesofperipheralequipmentthatmaybeusedwithanumericalcontrolsystem;itisnottheintentofthisTechnicalReporttospecifyortolimitthetypesofperipheralsusedinagivensystem.Otherstandardsexisttodefinesomeofthephysicalinterfacesimpliedbyfigure1.4FunctionalcategoriesofcommandsToillustratetheimplementationofasystemhavingabroadrangeofcommandsandwithmaximumutilizationofanalphanumerickeyboardforcommandentry,asystemhavingastructureorganizationaccordingtofigure2hasbeenused.Figure2showsseveralcategoriesofcommandsthatmaybeimplemented.ItisnottheintentofthisTechnicalReporttospecificallyrequireortolimitthecommandstothoseshowninfigure2;theextentofthecapabilitiesofanygivennumericalcontrolsystemwilldependupontheusetowhichthesystemisput.Insomesystems,diagnosticcapabilities,managementinformationsystemfacilitiesandotherspecializedfunctionsorcategoriesmightbeprovidedinadditiontothoseshowninfigure2.Afeatureoftheorganizationshowninfigure2istheexistenceofaModeSelectorlevelinthesystemstructure.Anoperatorcom-municatingwithanumericalcontrolsystemhavingthisstructurecangainaccesstoanyofthesubordinatecommandcategoriesfromtheModeSelectorlevel.Oncehehasenteredtheappropriatesub-level,hecanperformanydesiredoperationforwhichmnemoniccommandshavebeendefinedinthatcommandcategory.Whenhehascompletedhistask,hecanswitchfromthesub-levelbacktotheModeSelectorlevel
【中国标准分类号】:J50
【国际标准分类号】:
【页数】:21P;A4
【正文语种】:英语
【英文标准名称】:AutomaticTransferSwitches
【原文标准名称】:转换开关设备的安全标准(照明和电力用闲置的自动、手动和旁路/隔离转换开关)
【标准号】:ANSI/UL1008-2007
【标准状态】:作废
【国别】:美国
【发布日期】:
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:自动控制系统;转换开关;(电网)电源
【英文主题词】:Automaticcontrolsystems;Change-overswitches;Electricmains;Transferswitchingdevices;Transferswitchingequipment
【摘要】:Requirementscoverautomatic,manual,andby-pass/isolationtransferswitchesforuseinordinarylocationstoprovideforlightingandpowerasfollows:a)Automatictransferswitchesandby-pass/isolationswitchesforuseinemergencysystemsinaccordancewiththeNationalElectricalCode,NFPA70,andNFPA99.b)Transferswitchesforuseinoptionalstand-bysystemsinaccordancewithNFPA70.c)Inlegallyrequiredstand-bysystemsinaccordancewithNFPA70.d)Automatictransferswitchesandby-pass/isolationswitchesinaccordancewithNFPA20.e)Non-AutomatictransferswitchesinaccordancewithNFPA70andNFPA99.
【中国标准分类号】:K31
【国际标准分类号】:91_160_10
【页数】:
【正文语种】:英语
