ANSI/ISA S50.02 Part 5-1998 工业控制系统用现场总线.第5部分:应用层服务定义

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【英文标准名称】:FieldbusStandardforUseinIndustrialControlSystems-Part5:ApplicationLayerServiceDefinition
【原文标准名称】:工业控制系统用现场总线.第5部分:应用层服务定义
【标准号】:ANSI/ISAS50.02Part5-1998
【标准状态】:作废
【国别】:美国
【发布日期】:1998
【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】:应用层;总线;定义;定义;信息技术
【英文主题词】:Applicationlayer;Buses(dataprocessing);Definition;Definitions;Informationtechnology
【摘要】:ProvidesuserprogramswithameanstoaccesstheFieldbuscommunicationenvironment.Inthisrespect,theFieldbusApplicationLayer(FAL)canbeviewedasa"windowbetweencorrespondingapplicationsprograms".TheFALisanApplicationsLayerCommunicationStandarddesignedtosupportconveyanceoftime-criticalandnon-time-criticalapplicationsrequestsandresponsesamongdevicesinanautomationenvironment.Theterm,time-critical,isusedtorepresentthepresenceofanapplicationtime-window,withinwhichoneormorespecifiedactionsarerequiredtobecompletedwithsomedefinedlevelofcertainty.Thispart,theFALServiceDefinition,specifiesinteeractionsbeteweenremoteapplicationsintermsof:(a)Anabstractmodelfordefiningapplicationresources(objects)capableofbeingmanipulatedbyusersviatheuseofFALServices;(b)Theprimitives(interactionsbetweentheFALandtheFALuser)associatedwitheachFALServices;(c)Theparametersassociatedwitheachprimitive;(d)Theinterrelationshipbetween,andthevaildsquencesoftheprimitivesforeachservice.Thebehavioralaspectsoftheapplicationsarenotspecified;onlyadefinitionofwhatrequestsandresponsescanbesent/recievedisspecified.ThispermitsgreaterflexibilitytotheFALusersinstandardizingsuchobjectbehavior.Inadditiontotheseservices,somesupportingservicesarealsodefinedinthisspecificationtocontrolcertainaspectsofitsoperation.
【中国标准分类号】:N17
【国际标准分类号】:35_160
【页数】:
【正文语种】:英语