CA2271198A1 - Apparatus for controlling internetwork communications - Google Patents

Apparatus for controlling internetwork communications

Info

Publication number
CA2271198A1
CA2271198A1 CA002271198A CA2271198A CA2271198A1 CA 2271198 A1 CA2271198 A1 CA 2271198A1 CA 002271198 A CA002271198 A CA 002271198A CA 2271198 A CA2271198 A CA 2271198A CA 2271198 A1 CA2271198 A1 CA 2271198A1
Authority
CA
Canada
Prior art keywords
real time
network
proxy
transmit
calculated
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.)
Granted
Application number
CA002271198A
Other languages
French (fr)
Other versions
CA2271198C (en
Inventor
Andrew G. Swales
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.)
Schneider Electric USA Inc
Original Assignee
Schneider Automation Inc.
Andrew G. Swales
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 Schneider Automation Inc., Andrew G. Swales filed Critical Schneider Automation Inc.
Publication of CA2271198A1 publication Critical patent/CA2271198A1/en
Application granted granted Critical
Publication of CA2271198C publication Critical patent/CA2271198C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
    • G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by the network communication
    • 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
    • G05B2219/30—Nc systems
    • G05B2219/31—From computer integrated manufacturing till monitoring
    • G05B2219/31161—Java programcode or simular active agents, programs, applets
    • 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
    • G05B2219/30—Nc systems
    • G05B2219/34—Director, elements to supervisory
    • G05B2219/34038—Web, http, ftp, internet, intranet server
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

An interface allows for the transfer of real time control data with guaranteed delivery times between devices on a general purpose network and an industrial control system. A proxy server takes the role of a TCP/IP router and is configured to control the rate at which messages are forwarded from the non-real time to the real time portion of the network, keeping the loading of the real time portion stable regardless of the external non-real t:ime communication demand. Real time data is preconfigured and exchanged in a regular sequence, with the cyclic update period known. The length of any communication message necessary to transmit this information, plus any sequencing and acknowledgment overhead, is calculated in advance and aggregated. Each device with authority to transmit on the shared medium is given a time budget, calculated so that the total transmission quantity in unit time is deliberately limited to some fraction of the maximum transmission capability of the network. All communications from devices whose traffic loadings cannot be so controlled are arranged to pass through the proxy device in order to gain access to the deterministic network, and the proxy enforces the budget limits by introducing deliberate delays to the request messages if necessary.
CA002271198A 1997-09-10 1998-09-09 Apparatus for controlling internetwork communications Expired - Lifetime CA2271198C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/926,837 1997-09-10
US08/926,837 US6321272B1 (en) 1997-09-10 1997-09-10 Apparatus for controlling internetwork communications
PCT/US1998/018708 WO1999013388A1 (en) 1997-09-10 1998-09-09 Apparatus for controlling internetwork communications

Publications (2)

Publication Number Publication Date
CA2271198A1 true CA2271198A1 (en) 1999-03-18
CA2271198C CA2271198C (en) 2007-06-19

Family

ID=25453781

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002271198A Expired - Lifetime CA2271198C (en) 1997-09-10 1998-09-09 Apparatus for controlling internetwork communications

Country Status (6)

Country Link
US (1) US6321272B1 (en)
EP (1) EP0937283B1 (en)
JP (1) JP2001505343A (en)
CA (1) CA2271198C (en)
DE (1) DE69805952T2 (en)
WO (1) WO1999013388A1 (en)

Families Citing this family (116)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9418981D0 (en) 1994-09-21 1994-11-09 Univ Glasgow Apparatus and method for carrying out analysis of samples
US6327031B1 (en) 1998-09-18 2001-12-04 Burstein Technologies, Inc. Apparatus and semi-reflective optical system for carrying out analysis of samples
US7761910B2 (en) * 1994-12-30 2010-07-20 Power Measurement Ltd. System and method for assigning an identity to an intelligent electronic device
US7146408B1 (en) 1996-05-30 2006-12-05 Schneider Automation Inc. Method and system for monitoring a controller and displaying data from the controller in a format provided by the controller
US7216043B2 (en) * 1997-02-12 2007-05-08 Power Measurement Ltd. Push communications architecture for intelligent electronic devices
US20020152289A1 (en) * 1997-09-10 2002-10-17 Schneider Automation Inc. System and method for accessing devices in a factory automation network
US6587884B1 (en) * 1997-09-10 2003-07-01 Schneider Automation, Inc. Dual ethernet protocol stack for maximum speed access to a programmable logic controller (PLC)
US6732191B1 (en) * 1997-09-10 2004-05-04 Schneider Automation Inc. Web interface to an input/output device
US6484061B2 (en) * 1997-09-10 2002-11-19 Schneider Automation Inc. Web interface to a programmable controller
US6393380B1 (en) * 1998-02-13 2002-05-21 Sierra Concepts Corporation Interactive support system manufacturing equipment
US7162510B2 (en) 1998-03-16 2007-01-09 Schneider Automation Inc. Communication system for a control system over Ethernet and IP networks
FR2781583B1 (en) * 1998-07-22 2000-12-01 Cegelec COMMUNICATION ARCHITECTURE FOR INDUSTRIAL PROCESS CONTROL SYSTEM AND CORRESPONDING PROGRAMMED UNIT
US6233626B1 (en) * 1998-10-06 2001-05-15 Schneider Automation Inc. System for a modular terminal input/output interface for communicating messaging application layer over encoded ethernet to transport layer
US6845401B1 (en) * 1998-12-30 2005-01-18 Schneider Automation Inc. Embedded file system for a programmable logic controller
US6853867B1 (en) 1998-12-30 2005-02-08 Schneider Automation Inc. Interface to a programmable logic controller
US6405104B1 (en) * 1999-03-24 2002-06-11 General Electric Corporation Fault data synchronization via peer-to-peer communications network
JP2000278290A (en) * 1999-03-29 2000-10-06 Matsushita Electric Ind Co Ltd Network managing system
DE19929933C2 (en) * 1999-06-29 2002-06-27 Siemens Ag Communication system and communication method for an automation device with communication data stored in the automation device
GB2351588B (en) * 1999-07-01 2003-09-03 Ibm Security for network-connected vehicles and other network-connected processing environments
DE19930660A1 (en) * 1999-07-02 2001-01-11 Siemens Ag Process for monitoring or installing new program codes in an industrial plant
US6952727B1 (en) * 1999-12-07 2005-10-04 Schneider Automation Inc. Method for adapting a computer-to-computer communication protocol for use in an industrial control system
CA2362435A1 (en) * 1999-12-31 2001-07-12 Richard A. Baker Ethernet transfer device with an embedded programmable logic controller
AT413246B (en) * 2000-01-25 2005-12-15 Wieland Martin METHOD FOR DETECTING, TRANSMITTING AND STORING SWITCHING STATUS OF ELECTRICAL SWITCHING DEVICES
FR2804218B1 (en) * 2000-01-26 2002-03-29 Schneider Automation PROGRAMMABLE CONTROLLER WITH COMMUNICATION FUNCTIONS IN A CLIENT-SERVER ARCHITECTURE
US7117263B1 (en) * 2000-02-01 2006-10-03 Hewlett-Packard Development Company, L.P. Apparatus and method for processing requests from an external queue in a TCP/IP-based application system
JP3883775B2 (en) 2000-03-17 2007-02-21 株式会社デジタル CONTROL SYSTEM SERVER DEVICE, CONTROL SYSTEM, CONTROL SYSTEM SERVER DEVICE COMMUNICATION METHOD, AND RECORDING MEDIUM CONTAINING THE PROGRAM
DE60139431D1 (en) 2000-03-17 2009-09-10 Digital Electronics Corp Control server, control terminal, control system and storage control communication program for recording media
CA2310538A1 (en) * 2000-06-09 2001-12-09 Christopher Kirchmann Data line interrupter switch
US20040114591A1 (en) * 2000-07-13 2004-06-17 Schneider Automation Sas IP Routing Between Modules on a PLC Backplane
EP1184763A1 (en) * 2000-08-24 2002-03-06 Infineon Technologies SC300 GmbH & Co. KG Arrangement for data transmission between an equipment for manufacturing of a semiconductor device and a communicating device and method for operating the arrangement
US20020167967A1 (en) * 2000-09-06 2002-11-14 Schneider Electric Method for managing bandwidth on an ethernet network
US7028204B2 (en) * 2000-09-06 2006-04-11 Schneider Automation Inc. Method and apparatus for ethernet prioritized device clock synchronization
JP2004510275A (en) * 2000-09-28 2004-04-02 ビジロス，　インコーポレイテッド System and method for dynamic interaction with a remote device
US7085802B1 (en) * 2000-10-06 2006-08-01 International Business Machines Corporation Device for connecting two workstations with several links
US6640140B1 (en) * 2000-10-10 2003-10-28 Schneider Automation Inc. PLC executive with integrated web server
EP1410044A2 (en) 2000-11-08 2004-04-21 Burstein Technologies, Inc. Interactive system for analyzing biological samples and processing related information and the use thereof
DE10058524A1 (en) * 2000-11-24 2002-06-13 Siemens Ag System and method for the parallel transmission of real-time-critical and non-real-time-critical data via switchable data networks, in particular Ethernet
US6950874B2 (en) * 2000-12-15 2005-09-27 International Business Machines Corporation Method and system for management of resource leases in an application framework system
US7085824B2 (en) * 2001-02-23 2006-08-01 Power Measurement Ltd. Systems for in the field configuration of intelligent electronic devices
US6795798B2 (en) * 2001-03-01 2004-09-21 Fisher-Rosemount Systems, Inc. Remote analysis of process control plant data
US6671583B2 (en) 2001-03-30 2003-12-30 Helix Technology Corporation Vacuum system information network
US7447762B2 (en) * 2001-04-02 2008-11-04 Curray Timothy G Ethernet communications for power monitoring system
US8028099B2 (en) * 2001-04-20 2011-09-27 Rockwell Automation Technologies, Inc. Industrial control system with web enabled I/O modules
US20040143628A1 (en) * 2001-04-20 2004-07-22 Bradford Jonathan D. Systems and methods that discover and configure non-TCP/IP networks and devices residing therein
US7016751B2 (en) * 2001-07-13 2006-03-21 Helix Technology Corporation Vacuum system central control information server
EP1288757A1 (en) 2001-08-07 2003-03-05 Siemens Aktiengesellschaft Method and process control system for operating a technical installation
US6819960B1 (en) * 2001-08-13 2004-11-16 Rockwell Software Inc. Industrial controller automation interface
US7266589B2 (en) * 2001-08-13 2007-09-04 General Electric Company Service-portal enabled automation control module (ACM)
FR2829337B1 (en) * 2001-09-03 2003-10-31 Schneider Automation AUTOMATION EQUIPMENT CONNECTED TO A TCP / IP NETWORK
US20070130310A1 (en) * 2001-09-28 2007-06-07 Rockwell Automation Technologies, Inc. I/O Module with Web Accessible Product Data
DE10151116A1 (en) * 2001-10-15 2003-05-08 Siemens Ag Procedure for commissioning an operating and monitoring system for field devices
DE10151115A1 (en) * 2001-10-15 2003-05-08 Siemens Ag Method for operating and observing field devices
FI115272B (en) 2001-12-14 2005-03-31 Abb Oy Method and apparatus for transmitting data in a telecommunications system
DE10214541A1 (en) * 2002-04-02 2003-10-30 Siemens Ag Web server with integrated automation functionality
DE10214501A1 (en) * 2002-04-02 2003-10-30 Siemens Ag Web server with integrated automation functionality and direct access to the real-time communication level of the real-time Ethernet
DE10214540A1 (en) * 2002-04-02 2003-10-30 Siemens Ag Web server with integrated automation functionality and access to a real-time operating system
EP1355208A1 (en) * 2002-04-15 2003-10-22 Peter Renner System for the automation of technical processes
US20040030799A1 (en) * 2002-05-15 2004-02-12 Manu Gulati Bandwidth allocation fairness within a processing system of a plurality of processing devices
EP1367778A1 (en) * 2002-05-31 2003-12-03 Fujitsu Siemens Computers, LLC Networked computer system and method using dual bi-directional communication rings
US7004191B2 (en) * 2002-06-24 2006-02-28 Mks Instruments, Inc. Apparatus and method for mass flow controller with embedded web server
US6712084B2 (en) 2002-06-24 2004-03-30 Mks Instruments, Inc. Apparatus and method for pressure fluctuation insensitive mass flow control
US20030234045A1 (en) * 2002-06-24 2003-12-25 Ali Shajii Apparatus and method for mass flow controller with on-line diagnostics
US7136767B2 (en) * 2002-06-24 2006-11-14 Mks Instruments, Inc. Apparatus and method for calibration of mass flow controller
US6810308B2 (en) 2002-06-24 2004-10-26 Mks Instruments, Inc. Apparatus and method for mass flow controller with network access to diagnostics
US6868862B2 (en) * 2002-06-24 2005-03-22 Mks Instruments, Inc. Apparatus and method for mass flow controller with a plurality of closed loop control code sets
US7809473B2 (en) 2002-06-24 2010-10-05 Mks Instruments, Inc. Apparatus and method for pressure fluctuation insensitive mass flow control
US7552015B2 (en) * 2002-06-24 2009-06-23 Mks Instruments, Inc. Apparatus and method for displaying mass flow controller pressure
US20030234047A1 (en) * 2002-06-24 2003-12-25 Ali Shajii Apparatus and method for dual processor mass flow controller
US6948508B2 (en) 2002-06-24 2005-09-27 Mks Instruments, Inc. Apparatus and method for self-calibration of mass flow controller
DE10229704A1 (en) * 2002-07-02 2004-01-29 Endress + Hauser Process Solutions Ag Process for protection against unauthorized access to a field device in process automation technology
EP1388769A1 (en) 2002-08-05 2004-02-11 Peter Renner System for automation, surveillance, control, detection of measured values for technical processes
JP4786116B2 (en) * 2002-09-06 2011-10-05 ソニー株式会社 Information processing apparatus and method, and program
US7441114B2 (en) * 2002-09-10 2008-10-21 Ge Fanuc Automation North America, Inc. Methods and systems for management and control of an automation control module
US9009084B2 (en) 2002-10-21 2015-04-14 Rockwell Automation Technologies, Inc. System and methodology providing automation security analysis and network intrusion protection in an industrial environment
US8909926B2 (en) * 2002-10-21 2014-12-09 Rockwell Automation Technologies, Inc. System and methodology providing automation security analysis, validation, and learning in an industrial controller environment
US20040162996A1 (en) * 2003-02-18 2004-08-19 Nortel Networks Limited Distributed security for industrial networks
US20040162992A1 (en) * 2003-02-19 2004-08-19 Sami Vikash Krishna Internet privacy protection device
US7911994B2 (en) * 2003-02-28 2011-03-22 Openwave Systems Inc. Confirmation of delivery of content to an HTTP/TCP device
FI116184B (en) * 2003-03-17 2005-09-30 Abb Oy Procedure and arrangement for arranging traffic in a telecommunications system
US8176532B1 (en) 2003-03-17 2012-05-08 Sprint Communications Company L.P. Secure access point for scada devices
US6813943B2 (en) 2003-03-19 2004-11-09 Mks Instruments, Inc. Method and apparatus for conditioning a gas flow to improve a rate of pressure change measurement
JP4271478B2 (en) * 2003-04-08 2009-06-03 パナソニック株式会社 Relay device and server
DE10316288C5 (en) * 2003-04-09 2013-06-06 Siemens Aktiengesellschaft Device and method for data transmission
US8587452B2 (en) * 2003-05-12 2013-11-19 Power Measurement Ltd. Time coordinated energy monitoring system utilizing communications links
US7721273B1 (en) 2003-11-17 2010-05-18 Rockwell Automation Technologies, Inc. Controller equipment model systems and methods
US8150959B1 (en) 2003-11-17 2012-04-03 Rockwell Automation Technologies, Inc. Systems and methods for notifying multiple hosts from an industrial controller
ATE475949T1 (en) * 2003-12-09 2010-08-15 Sap Ag INDUSTRIAL CONTROL SYSTEM AND DATA PROCESSING METHOD THEREOF
US7399411B2 (en) * 2004-01-29 2008-07-15 International Business Machines Corporation Retainer assembly including buoyant retainer attached to remediation material and anchor
US8214532B2 (en) * 2004-04-27 2012-07-03 Rockwell Automation Technologies, Inc. Communication protocol bridge and controller method and system
US7860874B2 (en) * 2004-06-08 2010-12-28 Siemens Industry, Inc. Method for searching across a PLC network
US7512593B2 (en) * 2004-06-08 2009-03-31 Siemens Energy & Automation, Inc. System for searching across a PLC network
US20060004904A1 (en) * 2004-06-30 2006-01-05 Intel Corporation Method, system, and program for managing transmit throughput for a network controller
US20060078127A1 (en) * 2004-10-08 2006-04-13 Philip Cacayorin Dispersed data storage using cryptographic scrambling
GB0504326D0 (en) * 2005-03-02 2005-04-06 Symbian Software Ltd Dual mode operating system for a computing device
US20070030802A1 (en) * 2005-08-05 2007-02-08 Canon Development Americas, Inc. Enabling non real-time communication enabled devices to participate in real time communication scenarios
US7853677B2 (en) * 2005-09-12 2010-12-14 Rockwell Automation Technologies, Inc. Transparent bridging and routing in an industrial automation environment
US8175089B2 (en) * 2005-09-30 2012-05-08 Rockwell Automation Technologies, Inc. Extended address space capability for an industrial protocol
KR100983150B1 (en) * 2005-11-14 2010-09-20 미쓰비시덴키 가부시키가이샤 Network unit and programmable controller using the same
US20070186011A1 (en) * 2006-02-03 2007-08-09 Rockwell Automation Technologies, Inc. Industrial protocol and gateway
US20070186010A1 (en) * 2006-02-03 2007-08-09 Rockwell Automation Technologies, Inc. Extending industrial control system communications capabilities
US8317509B2 (en) 2006-02-21 2012-11-27 Mgs Mfg. Group, Inc. Two-shot, four station injection mold
JP4172490B2 (en) * 2006-03-15 2008-10-29 オムロン株式会社 Programmable controller
US20080080543A1 (en) * 2006-09-28 2008-04-03 Rockwell Automation Technologies, Inc. Network switch with controller i/o capability
EP1981245A1 (en) * 2007-04-13 2008-10-15 Liconic Ag Method and product for controlling laboratory equipment
US8737398B2 (en) * 2008-12-31 2014-05-27 Schneider Electric USA, Inc. Communication module with network isolation and communication filter
US8117434B2 (en) * 2008-12-31 2012-02-14 Schneider Electric USA, Inc. Component configuration mechanism for rebooting
CN101727104B (en) * 2009-11-17 2012-03-07 东莞市润星机械科技有限公司 Network transmission control system and method of digital control machine tool
DE102011011587A1 (en) * 2011-02-17 2012-08-23 Phoenix Contact Gmbh & Co. Kg Port-independent topologically planned real-time network
US9529348B2 (en) 2012-01-24 2016-12-27 Emerson Process Management Power & Water Solutions, Inc. Method and apparatus for deploying industrial plant simulators using cloud computing technologies
CN104079398B (en) * 2013-03-28 2019-04-12 腾讯科技（深圳）有限公司 A kind of data communications method, apparatus and system
US20150186119A1 (en) * 2013-12-31 2015-07-02 Rockwell Automation Technologies, Inc. Industrial automation device with editor and graphical object mobile visualization
US10320958B2 (en) * 2014-12-19 2019-06-11 Emerson Process Management Lllp Fast data transfer communication protocol for an industrial process network
GB2568167B (en) * 2016-05-16 2022-10-12 Fisher Rosemount Systems Inc Multi-protocol field device in process control systems
DE202016106787U1 (en) * 2016-12-06 2017-01-23 Keuro Besitz Gmbh & Co. Edv-Dienstleistungs Kg Monitoring system for a real-time monitoring of a machine tool and machine tool and transceiver module therefor
US10536291B2 (en) 2018-05-25 2020-01-14 K4Connect Inc. Home automation system including hub device determined time slot wireless communications and related methods
DE102019131622A1 (en) * 2019-11-22 2021-05-27 Beckhoff Automation Gmbh Method for operating an automation system and data infrastructure

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5377327A (en) * 1988-04-22 1994-12-27 Digital Equipment Corporation Congestion avoidance scheme for computer networks
US5163046A (en) * 1989-11-30 1992-11-10 At&T Bell Laboratories Dynamic window sizing in a data network
US5745758A (en) * 1991-09-20 1998-04-28 Shaw; Venson M. System for regulating multicomputer data transfer by allocating time slot to designated processing task according to communication bandwidth capabilities and modifying time slots when bandwidth change
JPH06284148A (en) * 1993-03-30 1994-10-07 Hitachi Ltd Moving picture communication control method and communication controller
US5864679A (en) * 1993-09-06 1999-01-26 Kabushiki Kaisha Toshiba Transaction routing in a multiple processor system using an extracted transaction feature parameter and transaction historical data
US5664101A (en) * 1993-12-22 1997-09-02 Heidelberg Druckmaschinen Ag Intelligent industrial local area network module for use in a distributed control system
US5475601A (en) * 1994-02-15 1995-12-12 Emhart Glass Machinery Investments Inc. Control for glassware forming system including bidirectional network gateway
DE59407059D1 (en) * 1994-10-25 1998-11-12 Rieter Ingolstadt Spinnerei Backplane control for spinning machine
DE29600609U1 (en) * 1996-01-17 1997-02-13 Siemens Ag Automation device
US5893091A (en) * 1997-04-11 1999-04-06 Immediata Corporation Multicasting with key words

Also Published As

Publication number Publication date
JP2001505343A (en) 2001-04-17
CA2271198C (en) 2007-06-19
EP0937283A1 (en) 1999-08-25
DE69805952T2 (en) 2003-01-23
US6321272B1 (en) 2001-11-20
WO1999013388A1 (en) 1999-03-18
DE69805952D1 (en) 2002-07-18
EP0937283B1 (en) 2002-06-12

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