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Factory Communication Systems, 1997. Proceedings. 1997 IEEE International Workshop on

1-3 Oct. 1997

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Displaying Results 1 - 25 of 45
  • Proceedings 1997 IEEE International Workshop on Factory Communication Systems. WFCS'97

    Publication Year: 1997
    Request permission for commercial reuse | PDF file iconPDF (691 KB)
    Freely Available from IEEE
  • On the performances of two popular fieldbuses

    Publication Year: 1997, Page(s):177 - 186
    Cited by:  Papers (14)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1057 KB)

    CAN and PROFIBUS-DP are two very popular fieldbuses, which can also be profitably also as control networks for distributed systems where a controller is connected to a number of simple devices. The use of CAN and PROFIBUS-DP as a communication support for event driven systems is considered and their performances are evaluated from this point of view. Only those aspects of these two networks which ... View full abstract»

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  • Integration of Time Petri Nets and TE-LOTOS in the design and evaluation of factory communication systems

    Publication Year: 1997, Page(s):71 - 80
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (798 KB)

    Time Petri Nets (TPN) and TE-LOTOS are timed extensions of two commonly used specification formalisms, that can be used in the design of real time concurrent and distributed systems. The paper reviews the differences between the two extended formal description techniques (FDTs), and shows how they can be used jointly in the design and evaluation of real time communication systems such as those use... View full abstract»

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  • VACANS-a tool for the validation of CAN-based applications

    Publication Year: 1997, Page(s):381 - 390
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (760 KB)

    To verify a priori if time constraints of a distributed real time application will be respected, one needs to develop a model suitable for the verification. The paper presents a method for modeling CAN based applications. The models are well suited to performance evaluation for the verification of time constraints. This approach is supported by the tool VACANS, integrating on the one hand a simula... View full abstract»

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  • CANopen: configure and device testing

    Publication Year: 1997, Page(s):373 - 380
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (652 KB)

    The paper describes an European field bus communication standard developed during ESPRIT IV project 7302 and subsequently has become known as CANopen. CANopen Configure Device and Test (CDT) software has been developed by Newcastle University (UK) to facilitate the configuring and testing of CANopen devices. The CDT is further enhanced to perform conformance testing of I/O devices. To operate the ... View full abstract»

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  • Performance evaluation of an MMS/ATM implementation

    Publication Year: 1997, Page(s):239 - 244
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    Combined use of hardware and software in end systems is an important aspect in providing high performance communication subsystems to be used in real time distributed systems. We present a system for industrial automation and process control called MMS-ATM. Our architecture is based on the ATM (Asynchronous Transfer Mode) protocol implemented in hardware and the MMS (Manufacturing Message Specific... View full abstract»

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  • Controller area network: a formal case study

    Publication Year: 1997, Page(s):365 - 372
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    We present a formal analysis of a Controller Area Network (CAN) controller using the Z specification language. It is a step in the evaluation of functional and performance properties of CAN applications. We first show how an external view of CAN controller functionalities can be held in Z. Z is based on set theory and first order logic and is very expressive: a unique notation allows the specifica... View full abstract»

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  • A real time video aggregation over ATM

    Publication Year: 1997, Page(s):231 - 238
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    The paper describes the implementation of a real time VAS (Video Aggregation System) on a parallel architecture based on a multiprocessor system with five C40 DSP's. Video aggregation of MPEG for a group of video sessions as a bundle is to perform compression and multiplexing of video streams before packetization (i.e. before the ATM layer). This system may be used to telesupervise factory process... View full abstract»

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  • Shop-floor communication with OSACA-compliant controllers

    Publication Year: 1997, Page(s):355 - 362
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (800 KB)

    The ESPRIT framework within the EC had given a chance for a European consortium to develop a model for the new generation of open controls, that could be used for advanced manufacturing environment. The OSACA consortium (the name OSACA stands for: Open System Architecture for Controls within Automation Systems) had developed the methodology and the technology to build such open controllers. Within... View full abstract»

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  • Interconnecting field-buses through ATM

    Publication Year: 1997, Page(s):223 - 229
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (716 KB)

    Networks in the area of factory automation, named field buses, have been developed to fulfill real time requirements. However, they can only cover areas such as factory halls or buildings. The paper describes a model for an internetworking unit connecting field buses via ATM networks, in order to break these limits. A remote bridge is used to span longer distances between field bus components in a... View full abstract»

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  • Factory communication systems to meet multi-media requirements

    Publication Year: 1997, Page(s):317 - 320
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    Communication systems on the factory environment are evolving just as rapidly as in other application areas. There is a clear trend in computer communications to apply fast and high bandwidth networking methods and elements. Their spread in the office environment is very promising and straightforward, but their direct application in the manufacturing environment needs some prior investigation. How... View full abstract»

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  • Synchronous producer-consumer transactions for real-time distributed process control

    Publication Year: 1997, Page(s):27 - 36
    Cited by:  Papers (1)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (820 KB)

    Some activities of a modern Industrial Process Control & Measurement System feature critical time constraints which impose strict synchronization between the producers (e.g sensors or controllers) and consumers (controllers and actuators) of information. These devices communicate through particular common bus networks, called fieldbuses, using communication protocols developed to guarantee pre... View full abstract»

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  • On the design and development of a gateway between MAP/MMS and PROFIBUS/FMS

    Publication Year: 1997, Page(s):349 - 353
    Cited by:  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    The paper studies the performances that a gateway between the standard architectures MAP and PROFIBUS, defined for manufacturing environments, should offer and analyses the main aspects to be followed on its design. In particular, the cell level network SINEC H1 and the fieldbus SINEC L2 from Siemens manufacturer have been selected as a possible platform to implement a gateway between such archite... View full abstract»

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  • Response time guarantees for ATM-networked control systems

    Publication Year: 1997, Page(s):213 - 222
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (900 KB)

    We present the Response-Time Analysis (RTA) method for providing real time guarantees in asynchronous transfer mode (ATM) communication networks, and evaluates its suitability for use in hard real time factory type environments. RTA provides an analysis of the network traffic which can be used by an admission control mechanism to determine if the timing requirements of a new connection can be guar... View full abstract»

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  • Applying Internet management standards to fieldbus systems

    Publication Year: 1997, Page(s):309 - 315
    Cited by:  Papers (9)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (588 KB)

    Today each fieldbus system has its own network management. In contrast to this multitude of solutions, we discuss a unified approach in that we integrate a fieldbus into the management framework of the Internet. Such a combination provides access to the fieldbus system from local or global computer networks by the use of common LAN management tools. We present different network management standard... View full abstract»

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  • Low-layer quasi-agreed order broadcast over local bus

    Publication Year: 1997, Page(s):17 - 26
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    Agreed order broadcast protocols are supposed to deliver messages in a group wide agreed total order. With large group sizes and a faulty communication environment (e.g., prone to reception misses), existing protocols can collapse due to imperfect synchronisation mechanisms. We propose and evaluate a MAC layer Jamming Protocol (JP), applicable in Ethernet type media, whereby a site jams an out of ... View full abstract»

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  • Demand side management in private homes by using LonWorks

    Publication Year: 1997, Page(s):341 - 347
    Cited by:  Papers (8)  |  Patents (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    The paper presents a system to distribute power consumption in private homes uniformly over time as well as to reduce total power consumption to meet the interests of the energy producers. We present autonomous and intelligent domestic appliances that communicate with each other. Every electrical device is supported by a built-in LonWorks-Node that incorporates distributed algorithms. The main obj... View full abstract»

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  • Connection allocation schemes for guaranteeing hard real-time communications with ATM network

    Publication Year: 1997, Page(s):203 - 212
    Cited by:  Papers (4)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (840 KB)

    Two technical advantages of ATM, end-to-end QoS and high bandwidth, make ATM suitable for distributed real time systems (DRTSs). However, ATM capabilities cannot be used correctly and efficiently without an adequate mapping of timing constraints of messages onto ATM services. The paper presents an approach for a “systematic” mapping of real time message attributes onto parameters, and ... View full abstract»

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  • Formal specification and analysis of a control system based on computer networks

    Publication Year: 1997, Page(s):297 - 305
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB)

    The control architecture for a distributed application (elevator system) is at first specified in terms of functionalities, networks and exchanges on networks. This architecture is based on two types of local area network (CANs and one network with a centralized control). Second, this architecture is modelled with stochastic timed Petri nets which allow one to express the main mechanisms of real t... View full abstract»

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  • Extensions to the pseudo-random class of energy-conserving access protocols

    Publication Year: 1997, Page(s):11 - 16
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (596 KB)

    A myriad of applications such as radio frequency identification (RFID) and smart card networks are emerging in which nodes are designed for extremely low cost, large scale applications such that the replacement of batteries is not feasible. Energy conservation therefore becomes a major constraint. Classical access protocols are either not energy conserving or lead to unacceptable delays. In a prev... View full abstract»

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  • Interaction between JavaTM and LonWorksR

    Publication Year: 1997, Page(s):335 - 340
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    The article presents a solution for remote control of Local Operating Networks with Java. The main objective is easy access to such networks via a Java enabled Web Browser. It is shown how to implement a Java applet that connects to a Java servlet which in turn activates a Win32 program that has access to LonWorks. The task of this applet is to provide the user with a comfortable and flexible inte... View full abstract»

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  • Dependability evaluation of fault tolerant architectures in distributed industrial control systems

    Publication Year: 1997, Page(s):193 - 200
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    Modern distributed industrial control systems need improvements in their dependability. We study different fault tolerant architectures for the nodes of these systems and present three different alternatives in order to develop fault tolerant nodes. Moreover, in order to evaluate their dependability we present theoretical models of each one, based on Markov chains, and the results obtained (reliab... View full abstract»

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  • A performance analysis of distributed hard-real time applications

    Publication Year: 1997, Page(s):167 - 176
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (716 KB)

    In distributed hard real-time applications there is a need for temporal analysis to evaluate and optimise a design with respect to the deadlines. The key method is the scheduling analysis of such applications, which means the schedulability not only of its tasks but of its messages too. The authors present a schedulability analysis which allows one to determine the timing parameters of messages an... View full abstract»

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  • A MAC protocol and a scheduling approach as elements of a lower layers architecture in wireless industrial LANs

    Publication Year: 1997, Page(s):139 - 148
    Cited by:  Papers (7)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (904 KB)

    The work-in-progress paper describes some elements of efforts in defining an architecture and an appropriate set of protocols for industrial local area networks (ILAN) with wireless communication media. The major focus is on lower layer protocols. The main elements are a description of data link layer services, a MAC protocol and a scheduling approach taking into consideration special properties o... View full abstract»

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  • TOGO-generating communication protocol implementations from formal specifications

    Publication Year: 1997, Page(s):287 - 296
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (844 KB)

    Formal specification techniques (FDTs) are a very important means for system design. The main drawback of such specifications however is the gap between the design of the specification and the development of the implementation. Our aim was to close this gap by providing a tool which transforms a specification written in the FDT LOTOS automatically into an implementation. To ensure a maximum of saf... View full abstract»

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