EP1499963A2 - Appareil d'automatisation comportant une interface destinee a l'acces a une application sur la base d'informations et de ports - Google Patents

Appareil d'automatisation comportant une interface destinee a l'acces a une application sur la base d'informations et de ports

Info

Publication number
EP1499963A2
EP1499963A2 EP03727205A EP03727205A EP1499963A2 EP 1499963 A2 EP1499963 A2 EP 1499963A2 EP 03727205 A EP03727205 A EP 03727205A EP 03727205 A EP03727205 A EP 03727205A EP 1499963 A2 EP1499963 A2 EP 1499963A2
Authority
EP
European Patent Office
Prior art keywords
automation
interface
application
devices
automation device
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Withdrawn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
EP03727205A
Other languages
German (de)
English (en)
Inventor
Rainer Heller
Thomas Jachmann
Norbert Portner
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.)
Siemens AG
Original Assignee
Siemens 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
Priority claimed from DE10229878A external-priority patent/DE10229878A1/de
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1499963A2 publication Critical patent/EP1499963A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/465—Distributed object oriented systems

Definitions

  • Automation device with interface for message and port-based access to an application
  • the invention relates to an automation device that provides functionality and an automation system with several such automation devices.
  • Automation systems that have been common until now often contain a wide variety of automation devices from different manufacturers.
  • the integration of these automation devices in an automation system requires high technical effort, since the communication of the respective devices takes place via proprietary mechanisms.
  • Different controls have to be addressed differently. For example, programmable logic controllers are often accessed via data blocks and thus at a very "data-driven" level.
  • communication usually takes place via expensive, special buses for automation technology, which often only offer a small bandwidth. This leads to special access , different drivers are required Uniform or common services are difficult or impossible to implement across systems.
  • the object of the invention is to enable the integration of automation devices into a homogeneous automation solution.
  • an automation device with at least one interface for message and port-based access to at least one application provided by the automation device, the application providing functionality, using internet mechanisms and the interface being described by meta information.
  • This object is achieved by an automation system with automation devices according to one of claims 1 to 5, in which the applications have means for direct communication with one another.
  • the invention is based on the knowledge that in automation systems known hitherto, the focus is on data, not the actual automation functionality.
  • the automation device according to the invention provides an application and thus a functionality which can be addressed via message and port-based access via an interface.
  • the application or functionality is therefore independent of the platform selected (e.g. PC, mainframe, handheld, PLC, sensor, ...), the operating system (e.g. Windows, Unix, %), from the programming language (e.g. C #, VB, C ++, Script, ...) and from the object model (e.g. COM, CORBA, ). So far, there is a separate, special access option for each device type in an automation system, which means that special drivers must be used in each case.
  • OPC O-process Control
  • a first approach for a uniform driver interface for accessing automation data was implemented.
  • OPC requires a proprietary, PC-based infrastructure.
  • the actual communication with the devices takes place via proprietary drivers.
  • OPC - like all other existing solutions - provides a data-driven view, which requires data-driven programming (instance data, data blocks).
  • the functionality in known systems must be implemented with a specific operating system, with PC-based clients or intelligent communication processors.
  • WebServices are characterized by the following properties: los (English: stateless), they use Internet standards and Internet protocols, they are available to many clients and they are independent of programming languages and platforms. Web service technology has so far been used in e-commerce and business-to-business applications. They play no role in the automation environment today.
  • the configuration of the interface of the automation device as an XML interface enables distributed and integrated Internet applications and a TCP / IP connection of the automation device.
  • this has a memory area for storing such information about the application.
  • the applications advantageously have means for direct communication with one another. This means that not only external applications and users can access these applications, but also other applications of the same automation system.
  • FIG. 2 shows the use of web services in a distributed automation system.
  • a client side 1 is connected to a server side 2 via an Internet and / or intranet 3.
  • a user 11 on the client side 1 can e.g. B. be designed as an application or as a browser. This application or this browser can run on different platforms, for example a notebook 12, a personal computer (PC) 13, a mobile phone 14 and a personal digital assistant (PDA) 15.
  • the user 11 communicates via the Internet and / or intranet 3 and via HTTP connections 4 and 8 to the server side 2.
  • the server side 2 contains a PC-based web server 5 and an embedded web server 9.
  • the web servers 5, 9 communicate with web services 7 via the connections 6 and 10, respectively Examples of WebServices 7 are the WebServices 20 to 23 realized in an automation system.
  • the automation system of the exemplary embodiment contains a PC 27 which controls a system 24 via automation devices 25 and 26.
  • system 24 in the system 24, in the automation devices 25, 26 and in the PC 27, web services 20, 21, 22 and 23 are included.
  • the components of the automation system 24 to 27 each have because at least one interface for message and port-based access to at least one application provided by this component.
  • these applications are implemented as web services.
  • Such a web service provides a certain functionality, uses internet mechanisms and is stateless.
  • the interfaces of the components of the automation system are described by meta information.
  • An interface can, for example, be designed as an XML interface.
  • the user 11 on the client side 1, that is to say an application or a browser can directly access the web services 7 or 20 to 23 via an HTTP connection 4 or 8 and a web server 5 or 9.
  • FIG. 2 shows the use of web services in a distributed automation system.
  • the distributed system contains various operating and monitoring systems 51 to 53 and distributed automation systems 54 to 57. Communication between operating and monitoring systems 51 to 53 and automation systems 54 to 57 takes place via an Internet and / or intranet 50.
  • the different automation systems 54 to 57 can be spatially spaced apart from one another.
  • the components 70 to 78 of the automation systems 54 to 57 are accessed via web services 60 to 68.
  • the operating and monitoring systems 51, 52 and 53 are designed as part of a control room or as a mobile personal digital assistant of a service technician.
  • communication via the Internet and / or intranet 50 takes place not only between the operating and monitoring systems 51 to 53 and the automation systems 54 to 57 but also between the individual automation systems 54 to 57 or between the components 70 to 78 of the automation systems.
  • B&B operating and monitoring
  • an application or application component addresses all accessible automation systems, calls the corresponding function there and uses the data supplied for further processing.
  • Applications are to be located on various levels. From applications in the area of MES (Manufacturing Execution System), operator stations to applications for maintenance technicians (see FIG. 2). By using Internet technologies, location independence is possible.
  • MES Manufacturing Execution System
  • program invocation services are implemented. Programs can be started in automation systems using standard mechanisms. An example can be the diagnosis.
  • a third scenario describes the support of a maintenance technician in carrying out a diagnosis within a system.
  • the maintenance technician can receive local information about devices, in particular about automation devices, when the system is walked on. He can get these directly from the automation devices with the help of generic or special applications by directly addressing them.
  • Various mechanisms are possible for addressing the automation devices. These range from the manual entry of a device address (e.g. via scanner), through navigation via a central directory service, to automatic detection of the devices in the vicinity (e.g. piconets).
  • RPC Remote Procedure Calls
  • B. SOAP Simple Object Access Protocol
  • WebService When using the WebService technology, it is possible to call up objects / types / instance-specific functionality of a device.
  • One of the central technical prerequisites for using WebService technology is the use of the "stateless model". This occurs naturally with automation devices. Here, the state is represented by the status of the automation device itself. The respective WebService is thus stateless, ie it does not save any information about a state, in particular the state of the respective automation device.
  • web services describe their functionality using standardized interface descriptions (eg WSDL (Web Service Description Language)). This description is sufficient for a client to use the Due to the techniques used, clients are not restricted to a specific platform (eg Windows, Unix, Linux, RMOS).
  • Automation devices can use the services of other automation devices directly in their own applications. This communication is based on standard technologies as described above. By adapting a standardized desktop technology to the automation world, the basis for a decentralized, platform-independent automation with standard technologies is created.
  • This technology allows both direct communication between applications (the so-called services) as well as the construction of applications from distributed components (again services), ie loosely connected web services can work together to fulfill a task.
  • standards such as XML and SOAP
  • the WebService technology scales from local communication to communication via the intranet / Internet. It is the basis for distributed and integrated Internet applications, using existing standards (e.g. W3C, IETF standards such as HTTP, XML, XML Schema, XML Data Types, etc.) or new ones, together with W3C, IETF defines standards such as SOAP, WSDL, UDDI.
  • Web service interfaces are described by meta information (methods, parameters (names and types)), usually in WSDL (Web Service Description Language). This complete interface description is sufficient to call up the web services. It describes the end point (port) at which the respective web service can be called and is particularly useful for automatic communication with web services.
  • WebServices are easy to access, blurring the lines between local APIs and WebServices ("Web APIs"). Access is just as easy as when creating and using a local object.
  • WebService technology is the basis for loosely coupled applications. It is characterized by message-based communication and scalability through statelessness. The loose coupling (e.g. with SOAP) offers the advantages of good compatibility with changes in the implementation of the client and server and robust communication (port-based, message-based, asynchronous).
  • a client packs messages into self-describing packets (messages) and sends them over the respective communication connection.
  • the sender and receiver only have an agreement with regard to the message format used on the line. The only assumption is that the recipient understands the message. No assumptions are made about what happens after the message is received or between the sender and recipient.
  • Common web services have the following properties: They are accessible via a communication network such as the Internet / intranet and have an XML interface. Information about WebServices is stored in a registry so that the WebServices can be localized via it. They communicate using XML messages via web protocols and support loosely coupled connections between systems.
  • the invention thus relates to an automation device 24 to 27 and an automation system with automation devices 24 to 27, which enable the integration of automation devices into a homogeneous automation solution.
  • the automation devices 24 to 27 have at least one interface for message and port-based access to at least one application 20 to 23 provided by the automation device 24 to 27, the application 20 to 23 providing functionality, using Internet mechanisms and the interface being meta -Information is described.
  • the applications 20 to 23 of the automation devices 24 to 27 in the automation system have means for direct communication with one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer And Data Communications (AREA)

Abstract

L'invention concerne un appareil d'automatisation (24...27) et un système d'automatisation comportant des appareils d'automatisation (24...27), permettant l'intégration d'appareils d'automatisation de manière à former une solution d'automatisation homogène. Les appareils d'automatisation (24...27) présentent au moins une interface destinée à l'accès à une application (20...23) mise en oeuvre par l'appareil d'automatisation (24...27), sur la base d'informations et de ports. Ladite application (20...23) offre une fonction et se sert de mécanismes Internet, l'interface étant décrite par des méta-informations. Les applications (20 23) des appareils d'automatisation (24 27) du système d'automatisation présentent des éléments destinés à la communication directe entre lesdites applications.
EP03727205A 2002-04-29 2003-04-16 Appareil d'automatisation comportant une interface destinee a l'acces a une application sur la base d'informations et de ports Withdrawn EP1499963A2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10219092 2002-04-29
DE10219092 2002-04-29
DE10229878A DE10229878A1 (de) 2002-04-29 2002-07-03 Automatisierungsgerät mit Schnittstelle zum nachrichten- und portbasierten Zugriff auf eine Applikation
DE10229878 2002-07-03
PCT/DE2003/001291 WO2003093984A2 (fr) 2002-04-29 2003-04-16 Appareil d'automatisation comportant une interface destinee a l'acces a une application sur la base d'informations et de ports

Publications (1)

Publication Number Publication Date
EP1499963A2 true EP1499963A2 (fr) 2005-01-26

Family

ID=29403562

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03727205A Withdrawn EP1499963A2 (fr) 2002-04-29 2003-04-16 Appareil d'automatisation comportant une interface destinee a l'acces a une application sur la base d'informations et de ports

Country Status (3)

Country Link
US (1) US20050198138A1 (fr)
EP (1) EP1499963A2 (fr)
WO (1) WO2003093984A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7467018B1 (en) 2002-11-18 2008-12-16 Rockwell Automation Technologies, Inc. Embedded database systems and methods in an industrial controller environment
US7706895B2 (en) 2005-02-25 2010-04-27 Rockwell Automation Technologies, Inc. Reliable messaging instruction
US7565351B1 (en) * 2005-03-14 2009-07-21 Rockwell Automation Technologies, Inc. Automation device data interface
US7233830B1 (en) 2005-05-31 2007-06-19 Rockwell Automation Technologies, Inc. Application and service management for industrial control devices

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6012084A (en) * 1997-08-01 2000-01-04 International Business Machines Corporation Virtual network communication services utilizing internode message delivery task mechanisms
DE19850469A1 (de) * 1998-11-02 2000-05-11 Siemens Ag Automatisierungssystem und Verfahren zum Zugriff auf die Funktionalität von Hardwarekomponenten
US7136913B2 (en) * 2000-05-31 2006-11-14 Lab 7 Networks, Inc. Object oriented communication among platform independent systems across a firewall over the internet using HTTP-SOAP
FR2813471B1 (fr) * 2000-08-31 2002-12-20 Schneider Automation Systeme de communication d'un equipement d'automatisme base sur le protocole soap

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03093984A2 *

Also Published As

Publication number Publication date
WO2003093984A3 (fr) 2004-04-29
US20050198138A1 (en) 2005-09-08
WO2003093984A2 (fr) 2003-11-13

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