EP1104609A2 - Systeme a bus - Google Patents

Systeme a bus

Info

Publication number
EP1104609A2
EP1104609A2 EP00926712A EP00926712A EP1104609A2 EP 1104609 A2 EP1104609 A2 EP 1104609A2 EP 00926712 A EP00926712 A EP 00926712A EP 00926712 A EP00926712 A EP 00926712A EP 1104609 A2 EP1104609 A2 EP 1104609A2
Authority
EP
European Patent Office
Prior art keywords
bus
supply voltage
coupling module
wire
point
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Withdrawn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
EP00926712A
Other languages
German (de)
English (en)
Inventor
Elmar Flaschka
Clemens Hoga
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
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1104609A2 publication Critical patent/EP1104609A2/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Withdrawn legal-status Critical Current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]
    • H04L12/42—Loop networks
    • 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
    • H04L12/40006—Architecture of a communication node
    • H04L12/40032—Details regarding a bus interface enhancer
    • 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
    • H04L12/403—Bus networks with centralised control, e.g. polling
    • 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]
    • H04L12/42—Loop networks
    • H04L12/437—Ring fault isolation or reconfiguration

Definitions

  • the invention relates to a bus system with one on one
  • Coupling module interconnected to form a ring structure, a line structure of the bus being implemented by a separation point in the coupling module, and with a monitoring device contained in the coupling module, which monitors the bus for matching states on both sides of the separation point and, in the event of non-compliance, the separation point via a controllable one Switching device closes.
  • Such a bus system is made of Siemens power generation - K U: Control technology power generation: Products & Services: SIMATIC NET bus system, online on the Internet: URL: http: // www. Siemens. de / kwu / d / foa / l / products / prodl60.htm (as of January 29, 1999).
  • the bus subscribers are connected to a bus via star couplers.
  • the bus is interconnected with the star couplers in a ring structure, a line structure being implemented by a separation point in one of the star couplers.
  • the signals (telegrams) arriving from both directions are monitored at the separation point. If the signals only come from one direction, the bus must be interrupted. In this case, the separation point is closed by a controllable switch, so that a closed line structure of the bus is restored and all bus participants can communicate with each other again via the bus.
  • Monitoring the bus for matching telegrams on both sides of the separation point is comparatively complex and can be associated with delays due to the telegram evaluation required for this.
  • the monitoring function only effective in times when telegrams are being transmitted via the bus.
  • the invention has for its object to ensure a particularly simple and safe bus redundancy.
  • the object is achieved in that, in the bus system of the type specified at the outset, the bus has wires for supplying power to bus users and in that the monitoring device is designed to detect and compare the supply voltage on the wires on both sides of the separation point.
  • the supply voltage on both sides of the disconnection point is monitored and compared instead of the telegrams in order to detect an interruption in the bus.
  • the monitoring of the supply voltage is particularly simple, interference-proof and possible even if no telegrams are transmitted.
  • all buses come into question in which the power supply and data transfer are carried out over the same cable, be it that the telegrams on the supply voltage for the bus participants are modulated or that, such as. B. with optical data transmission, the telegrams and the supply voltage are transmitted on separate wires.
  • the coupling module preferably contains a bus subscriber device coupled to the bus, the monitoring device detecting the non-compliance of the supply voltage on both sides of the disconnection point Bus subscriber device for the delivery of a
  • the error message advantageously contains information about Which side of the disconnection point the detected supply voltage falls below a minimum value, so that the location of the interruption of the bus with respect to the point at which the supply voltage is fed into the bus can be located more easily.
  • the controllable switching device used to close the disconnection point is preferably additionally controllable by a command that can be transmitted to the bus subscriber device via the bus.
  • the bus master can then specifically open and close the disconnection point to test the coupling module and to restart the bus that has been repaired after an interruption.
  • the coupling module can have a manually operable control element and / or a separate control signal input for actuating the controllable switching device.
  • FIG. 1 shows an embodiment of the bus system according to the invention and Figure 2 shows an embodiment of the bus coupler.
  • FIG. 1 shows a bus system consisting of a bus 1 with connected bus subscribers 2 ... 6, of which here the bus subscriber designated 4 as the bus master, ie active bus subscriber, and the other bus subscribers 2, 3, 5, 6 as Bus slaves, ie passive bus participants, are formed.
  • the bus 1 serves both for the transmission of telegrams, ie information, between the bus subscribers 2 ... 6, and for the transmission of the supply voltage for the power supply of the bus subscribers 2 ... 6, for which purpose a power supply unit 7, which supplies the supply voltage, on the Bus 1 is connected.
  • the ends of the bus 1 are interconnected to form a ring structure on a coupling module 8, but with a separation point 9 in the coupling module 8 is actually a line structure of the bus 1.
  • the coupling module 8 contains a controllable switching device 10, via which the normally open disconnection point 9 can be closed and opened again, and a monitoring device 11, which detects the supply voltage on the bus 1 on both sides of the disconnection point 9 and compares the voltage values obtained thereby.
  • the comparison includes determining whether the supply voltage supplied by the power supply unit 7 is present on the respective side of the disconnection point 9 or is not present as a result of an interruption 12 in the bus 1.
  • the presence of the supply voltage is detected by the detected voltage value exceeding a predetermined threshold value, while the absence of the supply voltage is detected by falling below a minimum value.
  • the detection and monitoring of the supply voltage on both sides of the disconnection point 9 can also be simplified in that the voltage across the disconnection point 9 is detected.
  • the monitoring device 11 If the interruption 12 of the bus 1 is detected on both sides of the disconnection point 9 due to different supply voltages, the monitoring device 11 generates a
  • the monitoring device 11 Simultaneously with the set signal 13, the monitoring device 11 generates an error signal 15 which is fed to a passive bus subscriber device (slave) 16 in the coupling module 8.
  • the bus subscriber device 16 which is connected to the bus 1 in the same way as the bus subscribers 2 ... 6, then gives an error message to the Bus 1, which is received by the bus participants, in particular the bus master 4.
  • the error message contains information about on which side of the disconnection point 9 the absence of the supply voltage was detected, so that the location of the interruption 12 is facilitated.
  • the disconnection point 9 can be opened again, either by a command transmitted from the bus master 4 to the bus subscriber device 16 or by manual actuation of an operating element 17 arranged on the coupling module 8.
  • the bus subscriber device 16 then generates a reset signal 18 with which the register 14 controlling the switching device 10 is reset.
  • the bus subscriber device 16 can also generate a set signal 19 for setting the register 14 depending on a command supplied to it via the bus 1 or on the actuation of the operating element 17, so that the separation point 9 can be opened and closed in a targeted manner for testing and restarting .
  • the latter contains a power supply device 20 which is connected to the bus 1 on both sides of the disconnection point 9 and receives the supply voltage from it.
  • both the bus telegrams and the supply voltage are transmitted via bus 1.
  • the telegrams and the supply voltage can be transmitted either on separate wires or a common wire of the bus 1, the telegrams being modulated onto the supply voltage in the latter case.
  • FIG. 2 shows an exemplary embodiment of the coupling module 8, which is coupled to a bus 1 with a first wire 21 for transmitting the telegrams, a second wire 22 for transmitting the supply voltage and a third wire 23 as a ground line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

L'invention concerne un système à bus qui, pour des raisons de redondance, est raccordé à un module de couplage pour former une structure annulaire, une structure en ligne du bus étant réalisée grâce à un point de sectionnement, dans le module de couplage. Un dispositif de surveillance contenu dans le module de couplage surveille le bus en ce qui concerne des états concordants, des deux côtés du point de sectionnement, ce dernier étant, en cas de non concordance, fermé par un dispositif de commutation commandé. On obtient une redondance de bus particulièrement simple et fiable par le fait que le bus (1) présente des conducteurs pour l'alimentation en courant des noeuds (2...6) et que la tension d'alimentation parcourant les conducteurs se trouvant des deux côtés du point de sectionnement (9) est surveillée.
EP00926712A 1999-04-14 2000-04-10 Systeme a bus Withdrawn EP1104609A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19916894A DE19916894B4 (de) 1999-04-14 1999-04-14 Bussystem
DE19916894 1999-04-14
PCT/DE2000/001096 WO2000062478A2 (fr) 1999-04-14 2000-04-10 Systeme a bus

Publications (1)

Publication Number Publication Date
EP1104609A2 true EP1104609A2 (fr) 2001-06-06

Family

ID=7904570

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00926712A Withdrawn EP1104609A2 (fr) 1999-04-14 2000-04-10 Systeme a bus

Country Status (4)

Country Link
US (1) US6640276B2 (fr)
EP (1) EP1104609A2 (fr)
DE (1) DE19916894B4 (fr)
WO (1) WO2000062478A2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19942937C2 (de) * 1999-09-08 2003-11-06 Siemens Ag Ringmanager für Dienstleistungsringe
DE10117748B4 (de) * 2001-04-09 2004-04-15 Siemens Ag Datenübertragungssystem für Werkzeug-, Produktionsmaschinen und Roboter
WO2005053221A2 (fr) * 2003-11-27 2005-06-09 Siemens Aktiengesellschaft Reseau, notamment reseau pa profibus, a proprietes de redondance, element de ramification pour appareil d'abonne dans un reseau de ce type, gestionnaire de redondance pour un reseau de ce type et procede pour faire fonctionner un reseau de ce type
CN100448204C (zh) * 2003-11-27 2008-12-31 西门子公司 一种运作网络的方法
EP1847894B1 (fr) * 2006-04-19 2008-10-22 Siemens Aktiengesellschaft Elément de dérivation destiné au fonctionnement dans un réseau de communication, réseau et procédé destinés au fonctionnement de l'élément de dérivation
DE102006044511B4 (de) * 2006-09-21 2011-11-03 Audi Ag Verfahren zum Ermitteln des Orts einer Busunterbrechung in einem CAN-Daisy-Chain-Busnetzwerk
IT1391799B1 (it) * 2008-11-21 2012-01-27 Sirti Spa Metodo e sistema per la protezione di una linea elettrica per segnali ferroviari
EP2369790B1 (fr) 2010-03-24 2015-07-29 WAGO Kontakttechnik GmbH & Co. KG Dispositif de communication
DE102018101103A1 (de) * 2018-01-18 2019-07-18 Volkswagen Aktiengesellschaft Verfahren und Computerprogramme für eine Überwachungsinstanz und eine Kommunikationskomponente, Überwachungsinstanz, Kommunikationskomponente, System und Fahrzeug
CN112904814B (zh) * 2021-01-16 2023-11-14 京能十堰热电有限公司 基于nt6000平台的profibus设备在线通讯状态监测方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2784080B2 (ja) * 1990-05-09 1998-08-06 富士通株式会社 リングネットワーク及びその障害復旧方法並びにリングネットワークに用いられるノード
EP0551114A1 (fr) * 1992-01-09 1993-07-14 STN Systemtechnik Nord GmbH Dispositif de communication d'informations
JP3226393B2 (ja) * 1993-09-20 2001-11-05 富士通株式会社 パス・プロテクション・スイッチ・リング・システム
ATE225585T1 (de) * 1994-05-09 2002-10-15 Europlex Res Ltd Ringnetzsystem
US6091705A (en) * 1996-12-20 2000-07-18 Sebring Systems, Inc. Method and apparatus for a fault tolerant, software transparent and high data integrity extension to a backplane bus or interconnect
DE19844185C2 (de) * 1998-09-28 2002-01-03 Danfoss As Busleitungssystem
DE19850869B4 (de) * 1998-11-04 2004-09-23 Siemens Ag Leitungskopplung und Verwendung einer Leitungskopplung in einem Bussystem

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0062478A2 *

Also Published As

Publication number Publication date
WO2000062478A9 (fr) 2001-11-22
US6640276B2 (en) 2003-10-28
WO2000062478A2 (fr) 2000-10-19
DE19916894A1 (de) 2000-10-26
US20030037272A1 (en) 2003-02-20
WO2000062478A3 (fr) 2001-03-15
DE19916894B4 (de) 2005-09-08

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