EP1566020A2 - Procede pour transmettre des donnees par l'intermediaire d'un bus de terrain d'un dispositif d'automatisation - Google Patents

Procede pour transmettre des donnees par l'intermediaire d'un bus de terrain d'un dispositif d'automatisation

Info

Publication number
EP1566020A2
EP1566020A2 EP03767662A EP03767662A EP1566020A2 EP 1566020 A2 EP1566020 A2 EP 1566020A2 EP 03767662 A EP03767662 A EP 03767662A EP 03767662 A EP03767662 A EP 03767662A EP 1566020 A2 EP1566020 A2 EP 1566020A2
Authority
EP
European Patent Office
Prior art keywords
field devices
data
fieldbus
several
filling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03767662A
Other languages
German (de)
English (en)
Inventor
Jörg Roth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Endress and Hauser Flowtec AG
Original Assignee
Endress and Hauser Flowtec AG
Flowtec AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Endress and Hauser Flowtec AG, Flowtec AG filed Critical Endress and Hauser Flowtec AG
Publication of EP1566020A2 publication Critical patent/EP1566020A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/407—Bus networks with decentralised control
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25014—Fieldbus general name of bus connected to machines, detectors, actuators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L2012/40208—Bus networks characterized by the use of a particular bus standard
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L2012/4026—Bus for use in automation systems

Definitions

  • the invention relates to a method for transmitting data via a fieldbus of an automation system according to the preamble of claim 1.
  • Field devices are often used in automation technology, which record or influence process variables in an automation system. Examples of such field devices are flow meters,
  • Temperature meters pressure meters that record the corresponding process variables flow, pressure or temperature.
  • This group of field devices is also known as sensors.
  • Another group includes the valves, which act as actuators on the flow in a pipe section.
  • the field devices are connected to a control unit (e.g. programmable logic controller PLC) via a fieldbus.
  • a control unit e.g. programmable logic controller PLC
  • the fieldbus is also connected to higher-level company networks, which enable the process flow to be monitored and monitored.
  • a fieldbus is always limited to the area of the carousel, i.e. the control unit that controls the filling must also be arranged on the carousel.
  • the object of the present invention is to provide a method for transmitting data via a fieldbus of an automation system which does not have the disadvantages mentioned above and which in particular enables fast and secure data exchange.
  • the essential idea of the invention is to provide several data channels on the data bus for the field devices, so that several field devices have access to the field bus at the same time.
  • the data channels are advantageously accessed using frequency division multiplexing.
  • An example of such a frequency division multiplex method is the OFDM (Orthogonal Frequency Domain Multiplex) method, which is very robust against interference.
  • field devices are connected to one another in pairs via a fixed data channel on the data bus. This ensures a fixed assignment between sender and receiver.
  • An example of a paired assignment is a flow meter and a valve in a bottling plant.
  • the connection between a stationary control and the moving field devices is made via a slip ring.
  • FIG. 2 filling station of a round filler according to FIG. 1 in a schematic representation; 3 communication link on a rotary filler according to a first variant;
  • Fig. 4 communication link on a rotary filler according to a second variant.
  • the filling system shown in FIG. 1 is a round filler with several filling stations A1, A2, A3 ... An, which are arranged in a circle on a carousel K.
  • the axis of rotation of the carousel K is labeled DA.
  • a slip ring VSR is arranged on the axis of rotation DA, from which data lines DL1, .., DLn lead to the respective filling stations A1, ..., To.
  • the slip ring VSR is connected via a data line DL to a modem M to which a computer unit RE is connected.
  • FIG. 2 shows an example of the station A1 with a flow meter D1 which measures the amount or the mass of the product to be filled.
  • the filling quantity is regulated via a valve V1, which is also arranged in a feed line R1.
  • the product is fed to the filling station A1 via the feed lines R1.
  • a container B1 (outlined as a bottle) is arranged below the outlet of the feed line R1. After filling, the full container B1 is led away from the filling station A1 and a new empty container is fed.
  • the dwell time of a container at the respective filling station can be in the range from 0.1 to 1 second.
  • the valve V1 is controlled either by a control unit S or by the associated flow meter D1 via the data line DL1. For this purpose, the information from the flow meter D1 is evaluated in the control unit S or in the flow meter D1 itself.
  • the valve V1 will be controlled so that the amount of the filled Product just corresponds to the target quantity. In particular, the overrun quantity of the valve must be taken into account.
  • the control signal for the valve must be generated before the flow meter D1 has measured the target quantity, since the valve V1 has a finite reaction time and therefore always has a certain lag.
  • a data bus DB has a line pair L1, L2 which is connected to all field devices on the carousel K. Communication and communication takes place via the line pair L1, L2
  • the line L1 is connected to the modem M and the computer unit RE via a supply slip ring VSR.
  • the field devices control the filling process without an additional control unit S.
  • Appropriate algorithms can be implemented in the field devices.
  • the field devices can also be accessed during operation to make special settings.
  • FIG. 4 Another variant of a communication link is shown in FIG. 4.
  • the line pair L1, L2 is only connected to the flow meters D, a control unit S and via the supply slip ring VSR to the modem M and the computer unit RE.
  • the control unit S controls the valves V1..Vn via the control lines S1, .., Sn accordingly.
  • the control unit S is arranged on the carousel K here.
  • Flow meter D and the associated valve V are connected via a data channel.
  • the OFDM (Orthogonal Frequency Domain Multiplex) method forms the physical layer in the OSI reference model.
  • the protocols based on this layer are independent of this, e.g. B. Profibus®, Foundation Fieldbus® etc.
  • the invention is characterized in that several field devices can communicate simultaneously via a data bus, which is of great importance in time-critical applications.
  • the OFDM method is a robust method for data transmission that is also suitable for data buses that have sliding contacts as connecting elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Small-Scale Networks (AREA)

Abstract

L'invention concerne un procédé pour transmettre des données par l'intermédiaire d'un bus de terrain d'un dispositif d'automatisation auquel sont raccordés plusieurs dispositifs de terrain (D1, D2, D3 , V1, V2, V3 ). Selon l'invention, ledit bus de terrain (FB) comprend plusieurs canaux de données auxquels lesdits dispositifs de terrain ont simultanément accès.
EP03767662A 2002-11-28 2003-11-26 Procede pour transmettre des donnees par l'intermediaire d'un bus de terrain d'un dispositif d'automatisation Withdrawn EP1566020A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10255743 2002-11-28
DE10255743A DE10255743A1 (de) 2002-11-28 2002-11-28 Verfahren zum Übertragen von Daten über einen Feldbus einer Automatisierungsanlage
PCT/EP2003/013273 WO2004049641A2 (fr) 2002-11-28 2003-11-26 Procede pour transmettre des donnees par l'intermediaire d'un bus de terrain d'un dispositif d'automatisation

Publications (1)

Publication Number Publication Date
EP1566020A2 true EP1566020A2 (fr) 2005-08-24

Family

ID=32308833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03767662A Withdrawn EP1566020A2 (fr) 2002-11-28 2003-11-26 Procede pour transmettre des donnees par l'intermediaire d'un bus de terrain d'un dispositif d'automatisation

Country Status (5)

Country Link
US (1) US20060146689A1 (fr)
EP (1) EP1566020A2 (fr)
AU (1) AU2003292119A1 (fr)
DE (1) DE10255743A1 (fr)
WO (1) WO2004049641A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006044592A1 (de) * 2006-09-19 2008-03-27 Endress + Hauser Flowtec Ag Verfahren zur Bestimmung des Massedurchflusses eines auf einem Rotationsfüller angeordneten Coriolis-Massedurchflussmessgeräts
DE102008016235A1 (de) * 2008-03-27 2009-10-01 Endress + Hauser Flowtec Ag Verfahren zum Betreiben eines auf einer rotierenden Karussell-Abfüllmachine angeordneten Meßgeräts
DE102008050116A1 (de) 2008-10-06 2010-04-08 Endress + Hauser Flowtec Ag In-Line-Meßgerät
DE102008050115A1 (de) 2008-10-06 2010-04-08 Endress + Hauser Flowtec Ag In-Line-Meßgerät
DE102008050113A1 (de) 2008-10-06 2010-04-08 Endress + Hauser Flowtec Ag In-Line-Meßgerät
WO2016200768A1 (fr) * 2015-06-07 2016-12-15 PCN Technology, Inc. Systèmes et procédés de communication sur bagues collectrices et contrôle de bagues collectrices
DE102022107097A1 (de) * 2022-03-25 2023-09-28 Krohne Messtechnik Gmbh Verfahren zum Betreiben einer Abfüllvorrichtung und entsprechende Abfüllvorrichtung

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DE3304300A1 (de) * 1983-02-09 1984-08-09 Brown, Boveri & Cie Ag, 6800 Mannheim Verfahren und einrichtung zur busanforderung und sammelquittierung in einem prozessbus-system
JPS62282848A (ja) * 1986-05-30 1987-12-08 Tokyo Keiki Co Ltd Ｆａシステムのデ−タ処理装置
AT404656B (de) * 1992-10-16 1999-01-25 Semcotec Handel Leitungsredundantes feldbussystem, vorzugsweise mit ringtopologie
JPH118644A (ja) * 1996-11-21 1999-01-12 Yazaki Corp 送信装置、受信装置、通信装置、通信方法、及び通信システム
DE19704662A1 (de) * 1997-02-07 1998-08-13 Siemens Ag Verfahren zur Lastsymmetrierung mehrerer autark und unabhängig arbeitenden Stromversorgungsmodulen einer modularen Stromversorgungsanlage
US6104722A (en) * 1997-03-07 2000-08-15 Advanced Micro Devices Inc. Apparatus for and method of communicating among devices interconnected on a bus
GB9827601D0 (en) * 1998-12-15 1999-02-10 Northern Telecom Ltd A power line communications system and method of operation thereof
DE19903367A1 (de) * 1999-01-28 2000-08-17 Siemens Ag Verfahren zum Synchronisieren von Sender und Empfänger bei einer Datenübertragung mit einem Mehrträgerfrequenzverfahren über Energieversorgungsleitungen
DE19914324C1 (de) * 1999-03-30 2001-01-11 Iad Gmbh Kommunikationssystem zur Datenübertragung in einem vermaschten Netzwerk unter Verwendung eines Verfahrens mit Muliträgerübertragung
DE19935490C2 (de) * 1999-07-28 2002-04-25 Phoenix Contact Gmbh & Co Verfahren sowie Steuer- und Datenübertragungsanlage zur Bereitstellung einer Komunikation zwischen mehreren Teilnehmern
DE10011303C2 (de) * 2000-03-09 2003-09-25 Siedle & Soehne S Türanlage, Verfahren zum Betreiben einer Türanlage sowie Verwendung des OFDM-Verfahrens beim Betreiben einer Türanlage
DE10142606A1 (de) * 2001-02-21 2002-08-29 Siemens Ag Datenverarbeitungssystem

Non-Patent Citations (1)

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Title
See references of WO2004049641A2 *

Also Published As

Publication number Publication date
AU2003292119A8 (en) 2004-06-18
US20060146689A1 (en) 2006-07-06
AU2003292119A1 (en) 2004-06-18
WO2004049641A3 (fr) 2004-09-16
DE10255743A1 (de) 2004-06-09
WO2004049641A2 (fr) 2004-06-10

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