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【英文标准名称】:Electricalmeasuringinstruments-X-Yrecorders;AmendmentA2(IEC61028:1991/A2:1997);GermanversionEN61028:1993/A2:1997
【原文标准名称】:电工测量仪器.X-Y-记录器.修改件A2
【标准号】:EN61028/A2-1997
【标准状态】:现行
【国别】:
【发布日期】:1998-12
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:规范(验收);作标记;电学测量仪表;分类系统;记录仪表;定义;电学测量;模拟信号;电压测量;记录仪器;X-Y记录仪;电流表;影响量;电流测量;测量仪器;分类;电气工程;符号;效应
【英文主题词】:Analoguesignals;Classification;Classificationsystems;Currentmeasurement;Currentmeters;Definition;Definitions;Electricalengineering;Electricalmeasurement;Electricalmeasuringinstruments;Influenceeffects;Influencequantity;Marking;Measuringinstruments;Recordinginstruments;Recordinginstruments(measurement);Referenceconditions;Specification(approval);Symbols;Voltagemeasuring;Voltagemeasuringinstruments;X-Y-recorders
【摘要】:
【中国标准分类号】:N27
【国际标准分类号】:17_220_20
【页数】:3P.;A4
【正文语种】:英语


【英文标准名称】:Industrialcommunicationnetworks-Fieldbusspecifications-Part6-12:Applicationlayerprotocolspecification-Type12elements
【原文标准名称】:工业通讯网络.数据总线规范.第6-12部分:应用层协议规范.12型元件
【标准号】:IEC61158-6-12-2007
【标准状态】:作废
【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】:应用层;应用;总线系统;总线;电路网络;通信;计算机应用;计算机控制;控制;控制设备;控制系统;控制工艺学;数据总线;数据通信;数据交换;数据传输线;数据连接系统;数据网络;数据处理;数据设备;数据传送;数据传输控制规程;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(数据处理);开放系统互连;操作技术;OSI;过程控制工程;协议规范;协议;服务设施;规范;规范(验收);传输媒质;传输协议
【英文主题词】:Applicationlayer;Applications;Bussystems;Buses(dataprocessing);Circuitnetworks;Communication;Computerapplications;Computerizedcontrol;Control;Controlequipment;Controlsystems;Controltechnology;Databus;Datacommunication;Dataexchange;Dataline;Datalinksystem;Datanetwork;Dataprocessing;Dataservices;Datatransfer;Datatransmissioncontrolprocedures;Definitions;Digital;Digitaldata;Digitalengineering;EDP;Electronicinstruments;Electronicsystems;Englishlanguage;Fieldbus;Guidancesystems;Industrial;Industrialfacilities;Informationinterchange;Informationprocessing;Informationtechnology;Interfaces(dataprocessing);Opensystemsinterconnection;Operationaltechniques;OSI;Processcontrolengineering;Protocolspecification;Protocols;Services;Specification;Specification(approval);Transmissionmedia;Transmissionprotocol
【摘要】:1.1GeneralThefieldbusApplicationLayer(FAL)providesuserprogramswithameanstoaccessthefieldbuscommunicationenvironment.Inthisrespect,theFALcanbeviewedasa“windowbetweencorrespondingapplicationprograms.”Thisstandardprovidescommonelementsforbasictime-criticalandnon-time-criticalmessagingcommunicationsbetweenapplicationprogramsinanautomationenvironmentandmaterialspecifictoType12fieldbus.Theterm“time-critical”isusedtorepresentthepresenceofatime-window,withinwhichoneormorespecifiedactionsarerequiredtobecompletedwithsomedefinedlevelofcertainty.Failuretocompletespecifiedactionswithinthetimewindowrisksfailureoftheapplicationsrequestingtheactions,withattendantrisktoequipment,plantandpossiblyhumanlife.1.2SpecificationsTheprincipalobjectiveofthisstandardistospecifythesyntaxandbehavioroftheapplicationlayerprotocolthatconveystheapplicationlayerservicesdefinedinIEC61158-5-12.Asecondaryobjectiveistoprovidemigrationpathsfrompreviously-existingindustrialcommunicationsprotocols.ItisthislatterobjectivewhichgivesrisetothediversityofprotocolsstandardizedinsubpartsofIEC61158-6.1.3ConformanceThisstandarddoesnotspecifyindividualimplementationsorproducts,nordoesitconstraintheimplementationsofapplicationlayerentitieswithinindustrialautomationsystems.Thereisnoconformanceofequipmenttotheapplicationlayerservicedefinitionstandard.Instead,conformanceisachievedthroughimplementationofthisapplicationlayerprotocolspecification.
【中国标准分类号】:N18;P76
【国际标准分类号】:25_040_40;35_100_70;35_160
【页数】:140P;A4
【正文语种】:英语