【英文标准名称】:Chemicalsusedfortreatmentofwaterintendedforhumanconsumption-Sodiumhexafluorosilicate.
【原文标准名称】:人类生活用水处理用化学制品.六氟硅酸钠
【标准号】:NFT94-211-2006
【标准状态】:现行
【国别】:法国
【发布日期】:2006-10-01
【实施或试行日期】:2006-10-20
【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】:
【英文主题词】:
【摘要】:
【中国标准分类号】:G77
【国际标准分类号】:71_100_80
【页数】:20P;A4
【正文语种】:其他


【英文标准名称】:Fieldbusstandardforuseinindustrialcontrolsystems-Datalinkprotocolspecification
【原文标准名称】:工业控制系统用现场总线标准.数据链路协议规范
【标准号】:BSEN61158-4-2004
【标准状态】:作废
【国别】:英国
【发布日期】:2004-09-08
【实施或试行日期】:2004-09-08
【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】:总线;定义;规范(验收);指导系统;接口(数据处理);电子仪器;电路网络;数据处理;开放系统互连;电气工程;协议规范;现场总线;传输媒质;工业的;电子数据处理;数据连接系统;数字工程;链路层;控制系统;规范;数据服务
【英文主题词】:Bussystems;Buses(dataprocessing);Circuitnetworks;Communication;Controlequipment;Controlsystems;Controltechnology;Datacommunication;Datalinklayers;Datalinksystem;Dataprocessing;Dataservices;Datatransfer;Definition;Definitions;Digital;Digitaldata;Digitalengineering;Digitalsignals;EDP;Electricalengineering;Electronicinstruments;Electronicsystems;Fieldbus;Guidancesystems;Industrial;Industrialfacilities;Informationinterchange;Informationprocessing;Informationtechnology;Interfaces(dataprocessing);Linklayers;Opensystemsinterconnection;OSI;Physicallayers;Processcontrol;Processcontrolengineering;Processcontrolsystems;Protocolspecification;Protocols;Signals;Specification;Specification(approval);Transmissionmedia;Transmissionprotocol
【摘要】:1OverviewTheFieldbusDataLinkLayerprovidesbasictime-criticalmessagingcommunicationsbetweendevicesinanautomationenvironment.ThepurposeofthispartofIEC61158istodefineeightdistinctandnon-interoperablefieldbusDataLinkprotocols.Eachprotocoldefinedinthispartofthisstandardismostcloselyrelatedto,andlieswithinthefieldofapplicationof,thecorrespondingservicesofIEC61158-3,thefieldbusDataLinkServiceDefinition.Theeightdistinctprotocolsarethefollowing:Type1—ADL-protocolfortheType1DL-service.Themaximumsystemsizeis56klinksof232nodes,eachwith240DLSAP-addressesandrelatedpeerandpublisherDLCEPs,plusanother768link-widegroupDL-addressesperlink,plusanother256DLSAP-addressesand2816peerandpublisherDLCEPsperlinkwhichcanbeallocatedamongthelink'snodes,plus2groupDL-addressesfortheextendedlink.FewerlinksornodespermitsanincreaseinthenumberofDLSAP-addressesandrelatedDLCEPs.Type2—ADL-protocolfortheType2DL-service.Themaximumsystemsizeisanunlimitednumberoflinksof99nodes,eachwith255DLSAP-addresses.Eachlinkhasamaximumof2relatedpeerandpublisherDLCEPs.Type3—ADL-protocolfortheType3DL-service.Themaximumsystemsizeisanunlimitednumberoflinksof127nodes,eachwith66DLSAP-addresses.Type4—ADL-protocolfortheType4DL-service.Themaximumsystemsizeisasinglelinkwithavirtuallyunlimitednumberofnodes,eachwith256DLSAP-addressesconnectedtoasingleDLS-user.Type5—AsecondDL-protocolfortheType1DL-service.Themaximumsystemsizeforthisprotocolis240linksof240nodes,eachwith2DLSAP-addressesandrelatedpeerandpublisherDLCEPs,plusanother2link-widegroupDL-addressesperlink,plus2groupOL-addressesfortheextendedlink.Anormativespecificationofthisprotocolwasnotavail-ableatthetimeofcompilationofthisedition.Type6—ADL-protocolfortheType6DL-service.Themaximumsystemsizeisasix-deephierarchyofbridgesforatotalof240links,eachof240nodes,whereeachnodehas240DLSAP-addressesandover60krelatedpeerandpublisherDLCEPs,plus16group-DL-addressesand4kpeerandpublisherDLCEPsperlinkwhichcanbeallocatedamongthelink'snodes,plusaverylargenumberofgroupDL-addressesforeachhierarchicalsubtreeoftheextendedlink.Type7—ADL-protocolfortheType7DL-service.Themaximumsystemsizeis126linksof256nodes,eachwith16DLSAP-addressesand16groupDL-addresses,plusanother28kDLSAP-addressesandrelatedpeerandpublisherDLCEPsperlinkwhichcanbeallocatedamongthelink'snodes,plusanother28klink-widegroupDL-addressesperlink,plus2groupDL-addressesfortheextendedlink.Type8—ADL-protocolfortheType8DL-service.Themaximumsystemsizeis1linkof256nodeswithpreconfiguredDLCEPs.2SpecificationsThisstandardspecifies:a)proceduresforeightdistinctandlargely-incompatibleprotocolsforthetimelytransferofdataandcontrolinformationfromonedata-linkuserentitytoapeeruserentity,andamongthedata-linkentitiesformingthedistributeddata-linkserviceprovider;b)thestructureofthefieldbusDataLink(DL)ProtocolDataUnitsusedforthetransferofdataandcontrolinformationbyeachofthoseeightprotocols,andtheirrepresentationasPhysicalInterfaceDataUnits.NOTEThroughoutIEC61158-4,grayboxeshavebeenusedinthetablestoindicatethatthespecifiedfieldisnotaconceptualpartofthespecificDLPDU.2.1Type1:AdditionalcharacteristicsThisprotocolprovidescommunicationopportunitiestoallparticipatingdata-linkentitiesa)inacyclicasynchronousmanner,sequentiallytoeachofthosedata-linkentities,andb)inasynchronousmanner,eithercyclicallyoracyclically,accordingtoapre-establishedschedule.
【中国标准分类号】:N17
【国际标准分类号】:35_100_20;35_160;35_240_50
【页数】:1100P.;A4
【正文语种】:英语