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【英文标准名称】:Liveworking.Portableequipmentforearthingorearthingandshort-circuiting.
【原文标准名称】:带电作业.接地用便携式设备或接地和短路
【标准号】:NFC18-446-1996
【标准状态】:现行
【国别】:法国
【发布日期】:1996-03-01
【实施或试行日期】:1996-03-20
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:检验;作标记;安全工程;铁路架空输电网;规范(验收);职业安全;安全;短路;铁路;可运输的;电气安全;交流电流;定义;接地装置;电气工程;叙述;试验;使用说明;移动的;短路装置;带电作业;铁路设施;接地;电流传导;电气设备;电气保护设备;架空线
【英文主题词】:Alternatingcurrent;Currentconduction;Definition;Definitions;Devicesforearthing;Earthing;Electricalengineering;Electricalequipment;Electricalprotectionequipment;Electricalsafety;Inscription;Inspection;Instructionsforuse;Liveworking;Marking;Mobile;Occupationalsafety;Overheadpowerlines;Railwayapplications;Railwaycatenaries;Railways;Safety;Safetyengineering;Short-circuiting;Short-circuitingdevices;Specification(approval);Testing;Transportable
【摘要】:
【中国标准分类号】:F21
【国际标准分类号】:13_260
【页数】:43P;A4
【正文语种】:其他


【英文标准名称】:Industrialcommunicationnetworks-Fieldbusspecifications-Part3-16:Data-linklayerservicedefinition-Type16elements
【原文标准名称】:工业通讯网络.现场总线规范.第3-16部分:数据联络层设备定义.16型元件
【标准号】:IEC61158-3-16-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-12
【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】:总线系统;总线;电路网络;通信;控制设备;控制系统;控制工艺学;数据通信;数据链层;数据连接系统;数据处理;数据设备;数据传送;定义;数字的;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;工业的;工业设施;信息交换;信息处理;信息技术;接口;链路层;开放系统互连;OSI;过程控制;过程控制工程;过程控制系统;信号;规范;规范(验收);传输媒质
【英文主题词】:Bodies;Bussystems;Buses(dataprocessing);Circuitnetworks;Codenumbers;Communication;Communicationmedia;Communicationsystems;Communicationtechnology;Control;Controlandcomputertechnology;Controlequipment;Controlsystems;Controltechnology;Controls;Cycle-time;Data;Datacommunication;Datalinklayers;Datalinksystem;Dataprocessing;Datarates;Dataservices;Datatransfer;Definitions;Digital;Digitaldata;Digitalengineering;EDP;Electricmachines;Electricalequipment;Electronicinstruments;Electronicsystems;Fieldbus;Guidancesystems;Industrial;Industrialfacilities;Industrialmachines;Informationinterchange;Informationprocessing;Informationtechnology;Initialization;Interfaces;Interfaces(dataprocessing);Linklayers;Machines;Mechanicalengineering;Numericalcontrol;Opensystemsinterconnection;OSI;Powertransmissionsystems;Processcontrol;Processcontrolengineering;Processcontrolsystems;Real-time;Real-timesystems;Serial;Signals;Specification;Specification(approval);Structure;Surveillance(approval);Transmission;Transmissionmedia
【摘要】:1.1OverviewThisstandardprovidescommonelementsforbasictime-criticalmessagingcommunicationsbetweendevicesinanautomationenvironment.Theterm“time-critical”isusedtorepresentthepresenceofatime-window,withinwhichoneormorespecifiedactionsarerequiredtobecompletedwithsomedefinedlevelofcertainty.Failuretocompletespecifiedactionswithinthetimewindowrisksfailureoftheapplicationsrequestingtheactions,withattendantrisktoequipment,plantandpossiblyhumanlife.ThisstandarddefinesinanabstractwaytheexternallyvisibleserviceprovidedbytheType16fieldbusdata-linklayerintermsofa)theprimitiveactionsandeventsoftheservice;b)theparametersassociatedwitheachprimitiveactionandevent,andtheformwhichtheytake;andc)theinterrelationshipbetweentheseactionsandevents,andtheirvalidsequences.Thepurposeofthisstandardistodefinetheservicesprovidedto?theType16fieldbusapplicationlayerattheboundarybetweentheapplicationanddatalinklayersofthefieldbusreferencemodel,and?systemsmanagementattheboundarybetweenthedata-linklayerandsystemsmanagementofthefieldbusreferencemodel.1.2SpecificationsTheprincipalobjectiveofthisstandardistospecifythecharacteristicsofconceptualdata-linklayerservicessuitablefortime-criticalcommunications,andthussupplementtheOSIBasicReferenceModelinguidingthedevelopmentofdata-linkprotocolsfortime-criticalcommunications.Asecondaryobjectiveistoprovidemigrationpathsfrompreviously-existingindustrialcommunicationsprotocols.ThisspecificationmaybeusedasthebasisforformalDL-Programming-Interfaces.Nevertheless,itisnotaformalprogramminginterface,andanysuchinterfacewillneedtoaddressimplementationissuesnotcoveredbythisspecification,includinga)thesizesandoctetorderingofvariousmulti-octetserviceparameters,andb)thecorrelationofpairedrequestandconfirm,orindicationandresponse,primitives.1.3ConformanceThisstandarddoesnotspecifyindividualimplementationsorproducts,nordotheyconstraintheimplementationsofdata-linkentitieswithinindustrialautomationsystems.Thereisnoconformanceofequipmenttothisdata-linklayerservicedefinitionstandard.Instead,conformanceisachievedthroughimplementationofthecorrespondingdata-linkprotocolthatfulfillstheType16data-linklayerservicesdefinedinthisstandard.
【中国标准分类号】:N18;P76
【国际标准分类号】:25_040_40;35_100_20;35_160
【页数】:30P;A4
【正文语种】:英语