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WO1997045983A1 - Dispositif d'adressage pour poste repetiteur d'un systeme bus seriel et procede d'adressage d'un poste repetiteur - Google Patents

Dispositif d'adressage pour poste repetiteur d'un systeme bus seriel et procede d'adressage d'un poste repetiteur Download PDF

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Publication number
WO1997045983A1
WO1997045983A1 PCT/DE1997/000936 DE9700936W WO9745983A1 WO 1997045983 A1 WO1997045983 A1 WO 1997045983A1 DE 9700936 W DE9700936 W DE 9700936W WO 9745983 A1 WO9745983 A1 WO 9745983A1
Authority
WO
WIPO (PCT)
Prior art keywords
station
addressing
data line
slave
bus system
Prior art date
Application number
PCT/DE1997/000936
Other languages
German (de)
English (en)
Inventor
Volker Aab
Gerhard Knecht
Harald Buehren
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO1997045983A1 publication Critical patent/WO1997045983A1/fr

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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
    • H04L12/403—Bus networks with centralised control, e.g. polling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5038—Address allocation for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
    • 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
    • H04L2012/40215—Controller Area Network CAN
    • 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
    • H04L2012/40267—Bus for use in transportation systems
    • H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle

Definitions

  • the invention relates to an addressing device for a secondary station of a serial bus system, which preferably comprises a main station, at least two secondary stations and a data line, with a control device which is connected to the data line.
  • the invention also relates to a bus system, preferably for motor vehicles, with a main station and at least two secondary stations, and a method for addressing a secondary station.
  • a generic bus system is known from DE-OS 43 40 048. It comprises a main station (hereinafter referred to as the master) and a number of secondary stations (hereinafter referred to as slaves) which can access a common bus line and exchange data.
  • the individual slaves are addressed using individual identifiers, for example serial numbers, which are usually specified by the manufacturer.
  • serial numbers for example serial numbers
  • This type of addressing via markings stored in slaves is in need of improvement, in particular with a view to reducing the hardware expenditure. Simplification is also desirable with regard to the configuration process if ⁇ an assumes that different identification values (when using a different serial number for each slave) must be taken into account in each bus system.
  • the object of the invention is therefore to provide an addressing device which enables addressing to be carried out independently of identifiers implemented permanently in the slaves.
  • Another object of the invention is to provide a method for addressing slaves that is simple to carry out.
  • the addressing device according to the invention for a slave station of a serial bus system has the advantage that the deposit there is no individual, unique identification in each slave, for example during production. This simplifies the production of the slaves on the one hand and the configuration of a bus system having these slaves on the other.
  • each slave has a switching device which is coupled into the data line leading to the subsequent slave.
  • the switching device on its part can be controlled by the master via the data line in order to either close or open it. However, if the data line to the subsequent slave is switched through, the data still tapped by the control device are ignored.
  • a transistor preferably a field effect transistor, as a switching device is particularly advantageous.
  • the control device is preferably designed as a microprocessor, so that more complex tasks can be carried out independently of the master.
  • the data line is switched through with the aid of the addressing devices, preferably starting from the secondary station adjacent to the master, until the desired secondary station Position and thus the desired secondary station is reached. Because the slaves ignore the incoming data with the data line configured, only the desired slave receives and responds to the commands sent by the master.
  • a "reset" is preferably carried out before each addressing, that is to say all switching devices are interrupted, so that only the slave adjacent to the master is ready to receive.
  • the method has proven to be particularly advantageous in so-called CAN bus systems, with actuators preferably being assigned to the slaves.
  • FIG. 1 shows a schematic illustration of a section of a bus system
  • FIG. 2 shows a schematic illustration of a secondary station (slave);
  • Figure 3 is a schematic representation of a switching device
  • Figure 4 is a flowchart to explain the operation of addressing a slave station.
  • FIG. 1 shows a bus system 1 which comprises a modular main station 3, hereinafter also called the master, and three modular secondary stations 5.1, 5.2 and 5.3, also called slaves below.
  • the individual stations 3, 5 are connected to a bus 7, which has a data line 9 and two power supply lines 11.
  • Bus system 1 is a so-called CAN bus system, in which the number of data lines and the transmission protocol are defined.
  • a CAN bus system is preferably used in the motor vehicle sector.
  • the different heating flap drives of a motor vehicle air conditioning system are each controlled via a slave 5, which receives control data from the master 3.
  • the master 3 has at least one computer 13 which is connected to a storage unit 15.
  • the computer 13 itself contains the CAN interface, not shown, which is connected to the data line 9.
  • the computer 13 takes over the higher-level coordination of the individual slaves 5, evaluates the data coming from the slaves and issues corresponding control commands which then trigger a specific control program in the respective slave. - 6 -
  • FIG. 1 clearly shows that the data line 9 does not run continuously, as is the case with the power supply lines 11, but that the addressing devices 17 are coupled into the data line 9.
  • the data line 9 is then led from the addressing device 17.1 to the addressing device 17.2 of the adjacent slave 5.2.
  • This course of the data lines 9 is then repeated in accordance with the number of connected slaves 5.
  • an individual slave 5.1 is shown in more detail by way of example for all connected slaves.
  • the addressing device 17.1 thus comprises a control device 21.1 and a switching device 23.1.
  • the CAN interface necessary for the transmission of the data is not shown.
  • the control device 21.1 controls the motor 19.1 as a function of certain stored control programs.
  • the commands for executing these control programs are received by the control device 21.1 via the data line 9, to which it is connected within the addressing device 17.1.
  • This data line 9, which comes from the left in the figure, is led via the switching device 23.1 to the subsequent slave 5.2.
  • the switching device 23 is opened or closed. This means that in the open state there is no connection between the left data line 9.1 and the right data line 9.2, while in the closed state a connection is established.
  • control line 25 is connected to the gate of the FET' ⁇ , while the data lines 9.1 and 9.2 are connected to the drain or the source of the FET.
  • control line 25 is connected to the gate of the FET' ⁇ , while the data lines 9.1 and 9.2 are connected to the drain or the source of the FET.
  • other electrically controllable switches are also conceivable.
  • slave 5.3 is to be addressed by master 3.
  • first all switching devices 23 of the slaves 5 are brought into the open state, for example via a "RESET".
  • the slave 5.1 is connected to the master 3 via the data line 9.
  • step 101 an internal counter i is first set to the value 1.
  • the master 3 then sends a command in step 102. - 8 •
  • the control device 21.1 is set in a mode in which it essentially ignores the data which continue to arrive via the data line 9.1. Only a general command "DISCONNECT BUS" leads to an action, namely the opening of the switching device 23.1. This command is sent, for example, in the event of a RESET ".
  • step 104 the internal payer i is incremented by 1, in the present case from 1 to 2.
  • step 105 thus yields a "NO", so that a return is made to step 101.
  • Steps 101 to 105 just described are now carried out again, but slave 5.2 is not affected, but now slave 5.2. Its switching device 23.2 is also closed, so that after step 105 is reached , Q -
  • step 105 now yields the result "YES" since the internal payer i has reached the value 3. It does not branch back to step 101, but to the subsequent step 106.
  • the master 3 issues the message intended for the slave 5.3 or the control command.
  • This command is transmitted via the data line 9 connected through to the slave 5.3 and received by the control device 21.3 of the slave 5.3 in step 107 and evaluated accordingly.
  • this message can contain the indication of a direction of rotation and an angle of rotation which the motor 19.3 is to execute. Since the control devices 21.1 and 21.2 of the two upstream slaves 5.1 and 5.2 are in the "IGNORE" mode, the command issued by the master does not result in actuation of the motors 19.1 and 19.2.
  • the slave 5.3 can not only receive the messages sent by the master 3, but can in turn transmit certain measurement data to the master 3, for example.
  • step 108 the master 3 checks whether it still has to send messages which relate to slaves which are subordinate to the slave 5.3 just addressed, that is to say, a case with an N> 3. If this is the case, the program branches again to step 101 in order to carry out the sequence of steps from 101. 7 5983 PC17DE97 / 00936
  • step 109 in which the master 3 sends the command "UNCONNECT".
  • the master 3 sends the command "UNCONNECT".
  • all slaves 5 whose control devices 21 are connected to the data line 9 react to this command.
  • the basic state from which the previously described addressing process originated has thus been reached.
  • the serial connection of the data line 9 for addressing a particular slave additionally enables simple localization of possible defects on the bus line 7.
  • the master 3 sends a "DIAGNOSTICS" message which the currently ready-to-receive slave receives and evaluates. If the slave is in an error-free state, it sends an acknowledgment message back to the master. If the master 3 does not receive an acknowledgment message, either the data line 9 to the corresponding slave is interrupted, or the program run within the slave is disrupted. In order to distinguish between these two cases, the master 3 generates a "POWER ON RESET" in which the energy supply to the slaves is briefly interrupted. This brief interruption leads to a RESET in each slave, that is, to a restart of its respective program.
  • the "DIAGNOSE" message that is subsequently sent to the previously non-guiding slave again does not lead to an acknowledgment message, it can be assumed with a high degree of probability that the data line 9 has been interrupted, namely between master 3 and the addressed slave.
  • the master 3 can further narrow down the location of the error on the basis of the number of the slave that has been properly acknowledged last.
  • the described addressing method also offers the possibility of dispensing with the so-called "WATCHDOC" function within the slaves.
  • This WATCHDOG function means that each slave sends a message to the user at regular time intervals Master sends to inform him of its correct function.
  • the WATCHDOG function can be carried out by master 3: by sending the "DIAGNOSTIC” command after issuing a "BUS DIAL” command. This command must be from that now - 1 2 -
  • the sending slave can of course also send its own messages, for example status, counter readings, diagnostic messages and so on, to the master 3.
  • the aforementioned addressing can also be used to assign an address number to the individual slaves, via which they can be addressed directly during operation without prior switching.
  • the value of the payer I is stored in a memory in the corresponding slave. This payer then serves as the address number for the respective slave.

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

Abstract

L'invention concerne un dispositif d'adressage pour poste répétiteur (esclave) d'un système bus sériel comprenant de préférence une station maîtresse (maître), au moins deux postes répétiteurs (5.1, 5.2) et une ligne de données, avec un dispositif de commande (21) relié à la ligne de données (9), ainsi qu'avec un dispositif de commutation (23) couplé dans la ligne de données (9) en direction du poste répétiteur (5) suivant, afin d'interrompre la ligne de données (9) en fonction d'un signal de commutation du dispositif de commande (21). L'invention concerne en outre un procédé d'adressage d'un poste répétiteur présentant le dispositif d'adressage précité.
PCT/DE1997/000936 1996-05-25 1997-05-09 Dispositif d'adressage pour poste repetiteur d'un systeme bus seriel et procede d'adressage d'un poste repetiteur WO1997045983A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19621272.3 1996-05-25
DE19621272A DE19621272A1 (de) 1996-05-25 1996-05-25 Adressierungsvorrichtung für eine Nebenstation eines seriellen Bussystems und Verfahren zur Adressierung einer Nebenstation

Publications (1)

Publication Number Publication Date
WO1997045983A1 true WO1997045983A1 (fr) 1997-12-04

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DE (1) DE19621272A1 (fr)
WO (1) WO1997045983A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10147512A1 (de) * 2001-09-26 2003-04-30 Elmos Semiconductor Ag Verfahren zur Adressierung der Teilnehmer eines Bussystems
DE10261174B3 (de) * 2002-12-20 2004-06-17 Daimlerchrysler Ag Automatische Adressierung auf Bussystemen
DE10256631A1 (de) * 2002-12-03 2004-07-01 Elmos Semiconductor Ag Verfarhen zur Adressierung der Teilnehmer eines Bussystems
WO2007057071A1 (fr) * 2005-11-15 2007-05-24 Valeo Schalter Und Sensoren Gmbh Procede pour faire fonctionner un systeme de detection, systeme de detection et module de detection
US7590140B2 (en) 2004-06-08 2009-09-15 Elmos Semiconductor Ag Method for addressing the participants of a bus system
WO2011012041A1 (fr) * 2009-07-28 2011-02-03 中兴通讯股份有限公司 Système et procédé d’établissement d’adresses de dispositifs esclaves de bus série
DE102010026431A1 (de) 2010-07-06 2012-01-12 Jörg Hartzsch Verfahren zur Adresszuteilung an Teilnehmer eines Bussystems
EP3007387B1 (fr) 2014-10-10 2017-08-09 ebm-papst Mulfingen GmbH & Co. KG Systeme maitre-esclave adressable dynamiquement et procede d'adressage dynamique d'unites esclaves

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DE19828259A1 (de) * 1998-06-25 1999-12-30 Behr Gmbh & Co Elektrische Schaltung, insbesondere für eine Heizungs- und/oder Belüftungsanlage eines Fahrzeugs
DE10024216A1 (de) * 2000-05-17 2001-11-22 Volkswagen Ag Stellantriebssystem
DE10062912A1 (de) * 2000-12-16 2002-07-11 Buhler Motor Gmbh Adressierung eines busgesteuerten Stellantriebs
US6725320B1 (en) * 2001-02-08 2004-04-20 International Business Machines Corporation I2C bus switching devices interspersed between I2C devices
DE10153846B4 (de) * 2001-11-02 2004-11-25 Daimlerchrysler Ag Zünd- oder Einspritzmodul und zugehörendes Initialisierungsverfahren
US7139839B2 (en) 2001-11-26 2006-11-21 Schneider Automation Inc. Method and apparatus for assigning a network node address
DE10202851A1 (de) 2002-01-24 2003-08-14 Grieshaber Vega Kg Verfahren zur Adresszuweisung in einem Netzwerk und Komponenten dafür
DE10208690B4 (de) * 2002-02-27 2007-04-12 Man Nutzfahrzeuge Ag Elektroniksystem für ein Fahrzeug, insbesondere Nutzfahrzeug
DE10215720A1 (de) * 2002-04-10 2003-10-30 Philips Intellectual Property Datenbus-Netzwerk
DE10225888B4 (de) * 2002-06-11 2007-06-21 Daimlerchrysler Ag Modulares Fahrwerksystem
DE10240832A1 (de) * 2002-09-04 2004-03-18 Robert Bosch Gmbh Bus
DE10336301A1 (de) * 2003-07-31 2005-03-10 Ego Elektro Geraetebau Gmbh Verfahren zur dynamischen Vergabe von Adressen sowie zugehörige Verwendung für Heizeinrichtungen
DE102005056294B4 (de) 2005-11-24 2016-04-28 Sew-Eurodrive Gmbh & Co Kg Verfahren zum Zuordnen von Adressen an Busteilnehmer eines Bussystems und Anlage
DE102006029997A1 (de) * 2006-06-29 2008-01-03 Robert Bosch Gmbh Verfahren zur Adressierung von hardwareabhängig kaskadierten Teilnehmern einer Schaltungsanordnung
EP2183676A1 (fr) * 2007-07-20 2010-05-12 Nxp B.V. Attribution d'adresse automatique pour un bus de communication
DE102008020927B4 (de) * 2008-04-25 2023-08-10 Vitesco Technologies GmbH Elektronische Steuerung und entsprechendes Verfahren zum Auslösen eines Hardware-Resets
DE102010042311B4 (de) 2010-10-12 2018-07-05 Mahle International Gmbh Verfahren zur Adresszuweisung von Nebenstationen in einem Bussystem
EP2631806A1 (fr) 2012-02-27 2013-08-28 Televic Rail NV Dispositifs et procédé pour attribuer des adresses de réseau
FR2999339A1 (fr) * 2012-12-12 2014-06-13 Crosslux Procede d’identification de modules photovoltaiques dans une installation photovoltaique
DE102018010310B3 (de) * 2018-09-10 2019-11-07 Inova Semiconductors Gmbh Effiziente Leitungstreibervorrichtung zur Datenflusskontrolle
DE102018010311B3 (de) 2018-09-10 2019-12-05 Inova Semiconductors Gmbh Effiziente Leitungstreibervorrichtung zur Datenflusskontrolle
DE102018007143B4 (de) * 2018-09-10 2019-10-10 Inova Semiconductors Gmbh Effiziente Leitungstreibervorrichtung zur Datenflusskontrolle

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10147512A1 (de) * 2001-09-26 2003-04-30 Elmos Semiconductor Ag Verfahren zur Adressierung der Teilnehmer eines Bussystems
DE10147512B4 (de) * 2001-09-26 2004-08-26 Elmos Semiconductor Ag Verfahren zur Adressierung der Teilnehmer eines Bussystems
DE10256631A1 (de) * 2002-12-03 2004-07-01 Elmos Semiconductor Ag Verfarhen zur Adressierung der Teilnehmer eines Bussystems
DE10256631B4 (de) * 2002-12-03 2005-07-14 Elmos Semiconductor Ag Verfarhen zur Adressierung der Teilnehmer eines Bussystems
DE10261174B3 (de) * 2002-12-20 2004-06-17 Daimlerchrysler Ag Automatische Adressierung auf Bussystemen
US7328286B2 (en) 2002-12-20 2008-02-05 Daimlerchrysler Ag Automatic addressing on bus systems
US7590140B2 (en) 2004-06-08 2009-09-15 Elmos Semiconductor Ag Method for addressing the participants of a bus system
WO2007057071A1 (fr) * 2005-11-15 2007-05-24 Valeo Schalter Und Sensoren Gmbh Procede pour faire fonctionner un systeme de detection, systeme de detection et module de detection
WO2011012041A1 (fr) * 2009-07-28 2011-02-03 中兴通讯股份有限公司 Système et procédé d’établissement d’adresses de dispositifs esclaves de bus série
DE102010026431A1 (de) 2010-07-06 2012-01-12 Jörg Hartzsch Verfahren zur Adresszuteilung an Teilnehmer eines Bussystems
EP3007387B1 (fr) 2014-10-10 2017-08-09 ebm-papst Mulfingen GmbH & Co. KG Systeme maitre-esclave adressable dynamiquement et procede d'adressage dynamique d'unites esclaves

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