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Practical Use & Understanding of Foundation FieldBus for Engineers & Technicians

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FieldBus

• A number of competing standards worldwide

• No internationally agreed standard which the market has completely accepted

• All standards based on the OSI Model

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Existing Plant Scenario

Control Room Bus

Plant Bus

PlantInterface& Local

Controllers

TerminalBoxes

Plant

Instrument Room

Central Control Room

From OtherInstrument

Rooms

P T

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Existing 4-20mA to Fieldbus

FieldDevices

Optional

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New FieldBus Approach

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Soft PLC System

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What is FieldBus?

• A smart instrument based system

• Digital data communications

• An internationally and market accepted standard to effectively replace the ‘old’ 4-20mA standard

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Real Benefits• Greatly reduced wiring costs

• Reduced installation and start-up time

• Improved on-line monitoring and diagnostics

• Easier change-out and expansion of devices

• Improved local intelligence in the devices

• Improved interoperability between manufacturers

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Competing Requirements

• A single bus system seems to be technically possible...

but what happens if the bus fails?

• Simple field devices require simple ON/OFF status and are real time (m.secs response)

• PLC’s to SCADA systems require large messages and update times of 10-100 m.secs

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Sensorbus

• Seriplex• ASI• INTERBUSLoop

Devicebus

• Device Net• SDS• Profibus DP• LONWorks• INTERBUS-S

Fieldbus

• IEC/ISA SP50• Fieldbus Foundation• Profibus PA• HART

Type ofDevices

Type ofControl

Another way of looking at the industrial networks

ProcessControl

LogicControl

Low-endbit

Midrangebyte

High-endblock

Simple Devices Complex Devices©Smar

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Bit Oriented Systems

• Binary type switches such as Proximity sensors/contact closures/float switches

• Example:Actuator Sensor Interface (ASI)

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Message Oriented Systems

• Message oriented systems - PC’s to PLC’s in uploading system or device configuration information

• Messages greater than 16 bytes in length

• Examples:

• Interbus-S; Profibus; Foundation Fieldbus

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FIELDBUS FOUNDATION

AN ASSOCIATION OF OVER 140MEMBER COMPANIES THAT ACCOUNTS

FOR OVER 90% OF THE WORLDSUPPLY OF INSTRUMENTATION

AND CONTROL PRODUCTS

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PARTIAL LIST OF MEMBER COMPANIES

ABB Ltd.Allen-Bradley Co., Inc.Apparatebau HundsbachAutomation Research Institue of Ministry of Metallurgical IndustryBailey ControlsBailey JapanBeamexBeldon Wire and CableBently Nevada CorporationBorst AutomationBP Oil - Alliance RefineryBray International, Inc.Brooks InstrumentCaltex ServicesChevron Research and Technology Co.Chiyoda CorporationDanfoss A/Sdigi table thielenDKK CorporationDuPont Engineering Co.EMCOEndress + Hauser GmbH + Co.Exxon Research & Engineering Co.Fieldbus International (FINT)

Fisher Controls International, Inc.Fisher-Rosemount Systems Inc.Fraunhofer Institute IITBFuji Electric Co., Ltd.GATX TerminalsGlaxo IncorporatedGroupe SchneiderGSC Precision Controls Division of DA-TechHartmann & Braun AGHitachiHoneywell Inc.Instituto de Investigaciones Electricas Johnson Yokogawa Corp.K.K. CodixK-PatentsKeystone ControlsKimrayKnick Elektronische Meßgeräte GmbH & Co.Koso Service Co., Ltd.KROHNE Messtechnik GmbH & Co. KGKurihara Kogyo Co., Ltd.M-System Co., Ltd.Magnetrol International, Inc.Masoneilan-Dresser IndustriesMeasurement Technology, Ltd. (MTL)

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Rosemount Inc.Saab Tank ControlServomexShell Oil CompanySHIMADZU CORPORATIONSHIP STAR Associates, Inc.Siebe ECDSiemens Industrial Automation, Inc.Simrad AlbatrossSMARSoftingSRC NIITEPLOPRIBORStoneL CorporationThe Foxboro CompanyTokyo Keiso Co., Ltd.Toshiba Corporation Valmet Automation Inc.VALTEK InternationalVEGA GrieshaberVinson SupplyWorldFIP EuropeYamaha CorporationYamatake-Honeywell Co., Ltd.Yokogawa Electric Corporation

Mettler-ToledoMicro Motion, Inc.Milltronics, Ltd.Mitsubishi Electric Corporation

Monsanto CompanyMotoyama Eng. Works, Ltd.Nagano Keiki Seisakusho Ltd.National Instruments Corp.NEC CorporationNeles-JamesburyNEMANiigata Masoneilan Co., Ltd.Ohkura Electric Co., Ltd.Oval Engineering Co., Ltd.Pacific Avionics CorporationPepperl + FuchsPMV, Palmstiernas Instruments ABPolitecnico di Torino-DaiPresys Instrumentos E Sistemas Ltda.R. Stahl Schältgeraete GmbH & Co.Ramsey Technology, Inc.Relcom Inc.Ronan Engineering CompanyRosemount Analytical Inc.

PARTIAL LIST OF MEMBER COMPANIES - CONTINUED

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