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1、FDT BasicsFrank Schmid M&M Software GmbH +49 (0) 77 24 94 15-29 Frank.Schmidmm-FDT Technology Overview MotivationVarious Standalone ToolsHARTEngineering / Programming ToolEngineering-SystemFDT Technology Overview Basic IdeaFDT Technology Overview What is FDT?FDT (Field Device Tool) technology standa
2、rdizes software interface between field devices drivers and host systems.n DTM (Device Type Manager) is a software driver delivered with the devicen Standardized software interfacen Similar idea as a print driverFDT Technology Overview Concept FDT Technology Overview FDT - Plug & WorkHARTFrame Appli
3、cation(Device Type Manager DTM)HARTFDT Technology Overview DTM - Device Type Managern Device Drivern For a particular Device or Device Family n Created and shipped by Device vendor n Spec. Features (e.g. Firmware Update)n Software Proxy for real Devicen Info on Parameter n Edit Parameter (Online / O
4、ffline) n Diagonstics, Documentation n Including GUIn ActiveX Controls n Corporate Design (Look & Feel) n Integrates with every FDT ContainerDevice Type ManagerDTM SymbolsORGateway DTMCommunication DTMFDT Technology Overview DTM TypesDevice DTMBTMBTMEthernetFDT Technology Overview FDT Containern Win
5、dows Application n Device Configuration Tool n Integrated in Engineering-System or Process Control Systemn Responsible for n Manage DTM Catalog (installed DTMs) n Engineering of Topology n Manage DTM lifecycle n Hosts DTM User Interface n Data Persistency (DTM, Topology,.) n Print Documentation n Us
6、er Managment n Audit TrailFDT Technology Overview The Simplest Case: Standalone Tools (1)Calibration ParameterizationDiagnosis MaintenanceField DeviceStandalone ToolFDT Technology Overview The Simplest Case: Standalone Tools (2)nTypical Use Cases: nWorkshops or small installationsnOnline connection
7、to the device nOperation mainly via the DTMs GUI nUser has access to all DTM functionality, e.g. by switching between different tab cards nCurrent configuration and parameters are read from the device nParameters may be written to the device e.g. for test purposesFDT Technology Overview The Complex
8、Case: Control Systems (1)Asset ManagementEngineering ToolHMIAutomation0 7Field DeviceDiagnosis Calibration MaintenanceConfiguration ParameterizationCommissioningOperating Alarm reporting MonitoringProcess variables Clock synchronization StatusFDT Technology Overview The Complex Case: Control Systems
9、 (2)nTypical Use Cases:nDifferent Frame Applications may use a DTM in different contexts nAvailability of DTM functions is controlled according to the application context nAll settings loaded to the device are stored in a system database nOnline connection to the device is not always available DTM w
10、orks on database only nDTM functions are frequently used in the background w/o starting a user dialogDevice DTMFrame ApplicationCommunication DTMStart DownloadRead / Write Request (protocol specific FDT XML)Read / Write (comm. hardware specific)Read / Write (fieldbus protocolspecific)Handover Commun
11、ication InterfaceRead / Write Response (protocol specific FDT XML)FDT Technology Overview Communicationn Profibus DPV1 Read Requestn Profibus DPV1 Read ResponseFDT Technology Overview Profibus XML ExamplesDTM 1FDT Technology Overview Nested Communication FDT-ContainerCommunication DTM0.20 mAHARTDTM
12、3DTM 4Send ParameterSend ParameterDTM 20.20 mAStart DownloadEthernetEthernet based ProtocolSend ParameterFDT Technology Overview Communication uses TunnelingHARTGateway DTMDevice DTMDevice DTMGateway DTMDPHART- FrameDPHART- FrameIFdtCommunicationIFdtCommunicationIFdtCommunicationCommunication DTMFra
13、me Application Communication ChannelCommunication to underlying fieldbus system is provided by a Communication DTM or Frame Application Channel SysDPHART- FrameDPSysEthernetTCP/IPFDT Technology Overview Communication n Each component wraps the communication frame from the component below, WITHOUT kn
14、owing the contentsn Routing through system topologyn DTM below does not have any knowledge about the network topology n DTM must only support its own communication protocol n Communication / routing through ANY network topology, no limitations n Communication / routing is possible even if the underl
15、ying protocol is unknown by the engineering or standalone toolFDT Technology Overview Scope of FDT Core Specificationn Software Architecture (Components, Interfaces) n DeviceDTM, CommDTM, FDT Container n COM Interfaces and XML Schemas n Mandatory Device Information (e.g. IDtmInformation) n Vendor, D
16、evice Type, Version n Use Cases n Login, Online/Offline Operation, System Planning,. n User Roles n Planning Engineer, Maintenance, Operator, Observer n Administrator, OEM Service n State Machine for DTM n Installation, Registry,.FDT Technology Overview Whats defined in FDT Specification?FDT Technology Overview FDT 1.2.1 n Released since August 2005n FDT 1.2.1 = FDT 1.2 + Addendum + Enhancementsn Revised Document
