EP0677830B2 - Überwachungseinrichtung - Google Patents
Überwachungseinrichtung Download PDFInfo
- Publication number
- EP0677830B2 EP0677830B2 EP95104988A EP95104988A EP0677830B2 EP 0677830 B2 EP0677830 B2 EP 0677830B2 EP 95104988 A EP95104988 A EP 95104988A EP 95104988 A EP95104988 A EP 95104988A EP 0677830 B2 EP0677830 B2 EP 0677830B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- monitoring apparatus
- bus
- circuit
- wire bus
- sensor
- 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.)
- Expired - Lifetime
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
- G08B26/001—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel
Definitions
- the invention relates to a monitoring device for a facility to be secured with a variety of sensors with analog or digital switching states, connected to an evaluation circuit are a switching signal depending on the Switching states of the sensors generated.
- Monitoring devices for devices to be secured as for machines, systems or the like have, when opening or reaching the momentary shutdown of the machine or system is required for reasons of danger, point out to everyone openable at least one sensor, about a mechanical-electrical safety switch, a light barrier or the like., whose outputs with are coupled to an evaluation circuit, which in turn an output signal, for example to stop the machine or system generated if at least one sensor a switching condition indicating danger was determined becomes.
- Each sensor can be activated, not activated or defective his. To determine its condition in a targeted manner, each Contact pair in the sensor can be evaluated individually, which requires at least three wires.
- DE-U-91 05 529 is a hazard detection system with a variety of Detectors that are connected to a control center via a two-wire bus, known.
- the control center requests all detectors to report back at the same time.
- Each detector responds at a different, predetermined time interval after Request by sending a switching status and other status signals. comprehensive data package.
- the object of the invention is a monitoring device of the type mentioned at the outset to create the to reduce and simplify the wiring effort and an improvement in security leads
- the sensors can be on or off be designed multi-channel. For data transfer are only very low currents necessary, so no circuit breakers are needed. It won't just be them individual components of the monitoring device, but also their wiring is monitored for errors.
- the data transmission takes place via the two-wire bus by clocking the operating voltage on active Maintain bus connections via a buffer circuit can be.
- the data stream can be as Telegram can be decoded and evaluated.
- the Evaluation circuit can receive an enable signal as soon as the operating voltage of the buffer circuit Threshold exceeds. This can result in a time delay Start signal for the evaluation circuit can be generated.
- the evaluation circuit responds in a fixed manner Time grid for a correct telegram structure Clocking the two-wire bus. This can be done through a short-circuit proof the operating voltage of the Bus through a resistor for one by the transmission speed fixed maximum time practical be short-circuited.
- Fig. 1 shows schematically a block diagram of a Monitoring device.
- FIG. 2 shows a block diagram of a bus connection for the monitoring device according to FIG. 1.
- the monitoring device shown comprises a variety of sensors 1 with analog or digital Switching states.
- This can be, for example - as shown - a mechanical-electrical Switching element comprising an opener 1a and one NO contacts 1b, which can be operated together, act.
- the sensors 1 can on doors, flaps, passageways or the like. on a facility to be secured like one Machine, system or the like be attached so that at one opening the door, flap or the like. the sensor 1 actuates, i.e. in the case shown, the opener at the same time 1a is opened and the closer 1b is closed, d. H. that the digital switching state of the sensor 1 this changes.
- sensors can also be used 1 with analog switching states, including electronic ones Encoders such as those with coding function in the form of coded "TAGs", optionally mixed with such with analog switching states.
- Each sensor 1 has a sensor processor 2 comprising a clock (watchdog), which is connected on the one hand via a bus connection 3 to a two-wire bus 4 and on the other hand to a non-volatile memory 5, an E 2 PROM.
- the two-wire bus 4 can be made from normal, unshielded wires and can have a tree and / or star-shaped structure.
- One wire of the two-wire bus 4, e.g. B. the negative, is galvanically connectable to machine earth, while the other wire transmits energy and signals, the transmission of signals by clocking the operating voltage.
- All sensors 1 are connected via the two-wire bus 4 to an evaluation circuit which, in the exemplary embodiment shown, comprises two preferably diverse evaluation processors 6 ', 6 ", which are also connected to the two-wire bus 4 via a respective bus connection 3 and communicating with one another Evaluation processors 6 ', 6 "each comprising a clock generator (watchdog) can, for example, be connected to an input of two relays 7', 7".
- each evaluation processor 6 ', 6 " has a non-volatile memory 8, an E 2 PROM.
- the memories 8 each contain the number of existing sensors 1 to be monitored.
- the two-wire bus 4 is housed somewhere Bus power supply 9, a constant current source (e.g. 24 V DC) connected.
- the individual components the monitoring device are on the Two-wire bus 4 powered.
- the bus connections 3 are designed accordingly (see also FIG. 2 and the following description thereof). Due to a high internal resistance of the bus power supply 9 becomes a short circuit during data transmission avoided.
- the two-wire bus 4 via an interface 10 with a PC and / or a programmable logic controller Controller.
- Latter can be used to store 5, 8 with the necessary information, as well as with your own Check sum to be provided. For example, this is possible through a simple ASCII protocol. At the Turning the power on will save this data from the memories 5, 8 read and compared with the checksum and loaded into the memories of the processors 6 ', 6 ".
- the Two-wire bus 4 to reach a specific sensor 1 stimulated by address, function and check word (for example a checksum) for a sensor 1 be sent as a telegram to the two-wire bus 4, i.e. that 4 clocked pulses on the two-wire bus appear, for example between 5 and 20 V. fluctuate, they will be sent to all sensor processors 2 transfer.
- Each sensor processor 2 checks the address by comparing the content of its associated memory 5 with the sent address.
- the addressed sensor processor 2 for example, as indicated in FIG. 1, outputs a signal S or at its two outputs leading to the sensor 1 in accordance with the transmitted function 1010. S from. With the opener 1a open and the closer 1b closed (this is the unactuated state of sensor 1), S and S unchanged and appear as such again at the inputs of sensor processor 2 coming from sensor 1, ie the answer is also 1010.
- the sensor processor can 2 control a status display 11, for example from a red and a green LED, the corresponding the state to light up, consists.
- the answer from sensor 1 is from both evaluation processors 6 ', 6 "evaluated when the function does not match the answer, a corresponding one will be given the relay 7 'or 7 "switching signal generated.
- One byte expediently contains the address and two more bytes the function and the record for the sensor while two additional bytes contain the check word that the information to be transmitted secured. If there is a data disturbance, an incorrect checkword. The telegram is already coming disturbed at sensor processor 2, refuses the acceptance of the telegram, so that the evaluation circuit detects a timeout error. Several of these Faults on the same sensor 1 lead to a fault message, there is a defect here with a high probability of sensor 1 is present.
- interrupted two-wire bus 4 leads to a timeout error.
- the two-wire bus 4 is faulty clamped to "high", this recognizes the Evaluation circuit when trying to send for the first time. This Fault can be evaluated and reported.
- a bus interface 3 is shown in Fig. 2.
- the bus connection includes a voltage regulator part 13 with a buffer capacitor 14, charged via a diode 15 and against Discharge is blocked.
- the latter is used for storage the actual voltage of the two-wire bus 4 on the respective bus interface 3 (corresponding to the Distance from the bus power supply 9 is due to the voltage of the ohmic resistance dropped accordingly).
- the buffer capacitor 14 secures the power supply for the associated sensor processor 2, sensor 1 and memory 5 or the associated Evaluation processor 5 ', 6 "and memory 8.
- the bus interface 3 comprises a bus receiver part 16 with a comparator 17 and one Voltage divider circuit 18.
- the voltage divider circuit 18 divides and in particular halves by means of resistors 19, 20 the stored actual bus voltage as a reference voltage for the comparator 17, so that the comparator 17 is allowed within a practical range Area can work, i.e. there is a dynamic Switching threshold according to the current one Actual bus voltage, i.e. if the actual bus voltage drops off at the respective bus interface 3, runs the trigger threshold of the comparator 17 of the actual bus voltage halfway behind.
- the signal applied is also divided by means of resistors 21, 22, and in a ratio greater than the division by resistors 19, 20, e.g.
- the bus connection 3 comprises a transmitting part 23 with an L 2 MOSFET transistor 24, at the gate of which the signal from the sensor processor 2 or from the evaluation processor 6 ', 6 "is applied via a resistor 29, so that the latter is conductive or corresponding to the signal
- the transistor 24 is current-monitored via parallel resistors 25, 26 connected to its source to ground, which are connected via a resistor 27 to the gate of a thyristor 28 connected to the gate of the transistor 24 with its anode If the current through transistor 24 becomes too high, a proportional voltage drops across resistors 25 and 26, so that the trigger level of thyristor 28 is reached via resistor 27. Thyristor 28 becomes conductive and switches transistor 24 via resistor 29 off, so that an overcurrent is prevented from reaching the two-wire bus 4. The thyristor 28 then remains during the entire transmission time, ie conductive during the time a bit is being transmitted.
- a resistor 30 connected between the input of the Resistor 29 and earth is prevented Turn on the transistor 24 when the Bus voltage on the capacitor 14 before the start of the Processors 2, 6 ', 6 ".
- a capacitor 31 between the gate of the thyristor 28 and earth prevents ignition of the thyristor 28 for short-term disturbances (transient suppression).
- a diode 32 is used for reverse polarity protection and one Transsil diode 33 for surge protection.
- a resistor 34 limits the inrush current and the load current of transistor 24 in the event of a fault.
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Alarm Systems (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Description
Claims (15)
- Überwachungseinrichtung für eine zu sichernde Einrichtung mit einer Vielzahl von Sensoren (1) mit analogen oder digitalen Schaltzuständen, die an eine Auswerteschaltung angeschlossen sind, die ein Schaltsignal in Abhängigkeit von den Schaltzuständen der Sensoren (1) erzeugt, wobei jedem Sensor (1) eine Schaltung (2) zur Erfassung seines Schaltzustandes zugeordnet ist und die Schaltungen (2) der Sensoren (1) an einen mit der Auswerteschaltung verbundenen Zweidraht-Bus (4) mit getakteter Datenübertragung angeschlossen sind, dadurch gekennzeichnet, daß die Sensoren (1) über den Zweidraht-Bus (4), der an ein Netzteil (9) angeschlossen die Energieversorgung der Überwachungseinrichtung vornimmt, jeweils mit wechselnden Signalen zur Abgabe entsprechend wechselnder Sensorsignale bei gleichbleibendem Schaltzustand stimulierbar und somit einem Selbsttest unterwerfbar sind, wobei die Datenübertragung durch getaktetes Kurzschließen der Betriebsspannung, die an aktiven Busanschaltungen (3) während des Kurzschließens jeweils über eine Pufferschaltung (13) aufrechterhalten wird, erfolgt und die Schaltungen (2) der Sensoren (1) prozessorgesteuert sind.
- Überwachungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Zweidraht-Bus (4) stern- und/oder baumförmig ausgebildet ist.
- Überwachungseinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß mittels jeder prozessorgesteuerten Schaltung (2) ein Datensatz vom Zweidraht-Bus (4) adressenmäßig mit der zugehörigen Sensoradresse vergleichbar und bei Übereinstimmung einlesbar und ein den Zustand des zugehörigen Sensors (1) wiedergebender Datensatz auf den Zweidraht-Bus (4) gebbar ist.
- Überwachungseinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß jede prozessorgesteuerten Schaltung (2) einen nichtflüchtigen Speicher (5) für die Sensoradresse umfaßt.
- Überwachungseinrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Zweidraht-Bus (4) an ein Konstantstrom-Busnetzteil (9) mit hohem Innenwiderstand angeschlossen ist.
- Überwachungseinrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Auswerteschaltung zwei redundante Auswerteprozessoren (6', 6") jeweils mit einem nichtflüchtigen Speicher (8) umfaßt.
- Überwachungseinrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die prozessorgesteuerten Schaltungen (2) und die Auswerteschaltung jeweils über eine Busanschaltung (3) mit dem Zweidraht-Bus (4) verbunden sind, die die Pufferschaltung (13) für die Betriebspannung umfaßt.
- Überwachungseinrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Pufferschaltung (13) einen über eine Diode (15) ladbaren und gegen Entladung sperrenden Pufferkondensator (14) umfaßt.
- Überwachungseinrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß die Busanschaltung (3) ein einen Komparator (17) aufweisende Empfängerteil (18) mit einer Triggerschwelle, die entsprechend der an der Busanschaltung (3) anliegenden Ist-Busspannung gleitet, umfaßt.
- Überwachungseinrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Triggerschwelle durch eine Spannungsteilerschaltung (19, 20) für die Ist-Busspannung bestimmt ist.
- Überwachungseinrichtung nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß eine Spannungsteilerschaltung (21, 22) für einlaufende Signale derart vorgesehen ist, daß die Pegel sicher über bzw. unter der Triggerschwelle liegen.
- Überwachungseinrichtung nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet, daß die Busanschaltung (3) ein Sendeteil (23) mit einem kurzschlußschützten Schalter (24) aufweist.
- Überwachungseinrichtung nach Anspruch 12, dadurch gekennzeichnet, daß das Sendeteil (23) einen Thyristor (28) umfaßt, der bei Überstrom auf den Zweidraht-Bus (4) für eine ganze Bitzeit des Signals gesperrt ist.
- Überwachungseinrichtung nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß jede prozessorgesteuerte Schaltung (2) und gegebenenfalls die Auswerteschaltung eine Zustandsanzeige (11, 12) aufweisen.
- Überwachungseinrichtung nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß der Zweidraht-Bus (4) an einen PC bzw. eine speicherprogrammierbare Steuerung angeschlossen ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4412653 | 1994-04-13 | ||
| DE4412653A DE4412653C2 (de) | 1994-04-13 | 1994-04-13 | Überwachungseinrichtung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0677830A1 EP0677830A1 (de) | 1995-10-18 |
| EP0677830B1 EP0677830B1 (de) | 1998-07-08 |
| EP0677830B2 true EP0677830B2 (de) | 2001-11-14 |
Family
ID=6515242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95104988A Expired - Lifetime EP0677830B2 (de) | 1994-04-13 | 1995-04-04 | Überwachungseinrichtung |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5757672A (de) |
| EP (1) | EP0677830B2 (de) |
| DE (2) | DE4412653C2 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004014313B4 (de) * | 2003-03-30 | 2006-10-12 | Bihl & Wiedemann Gmbh | Netzwerk-Vorrichtung, insbesondere Aktuator-Sensor-Interface-Netzwerk |
| EP3069202B1 (de) | 2013-11-13 | 2019-07-24 | Pilz GmbH & Co. KG | Sicherheitssteuerung mit konfigurierbaren eingängen |
Families Citing this family (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2141092C (en) * | 1995-01-25 | 1999-01-05 | James F. White | Communication between components of a machine |
| DE19632962A1 (de) * | 1996-08-16 | 1998-02-19 | Schmersal K A Gmbh & Co | Schalter- und Türbetätigungseinrichtung |
| US6283514B1 (en) | 1996-08-16 | 2001-09-04 | K. A. Schmersal Gmbh & Co. | Apparatus for monitoring and controlling access to a restricted area |
| DE19708359C1 (de) * | 1997-03-01 | 1998-07-02 | K A Schmersal Gmbh & Co Kg | Überwachungseinrichtung für wenigstens einen Sicherheitsschalter |
| DE19711588A1 (de) † | 1997-03-20 | 1998-09-24 | Euchner Gmbh & Co | Sicherheitsschalter |
| DE19815148B4 (de) * | 1997-04-21 | 2005-03-17 | Leuze Electronic Gmbh & Co Kg | Sensoranordnung |
| DE19815147B4 (de) * | 1997-04-21 | 2005-03-17 | Leuze Electronic Gmbh & Co Kg | Sensoranordnung |
| DE19815150B4 (de) * | 1997-04-21 | 2005-03-10 | Leuze Electronic Gmbh & Co Kg | Sensoranordnung |
| EP0898230A1 (de) * | 1997-08-18 | 1999-02-24 | Hung-Che Chiu | Drahtloser Rechnerempfänger |
| DE19758848B4 (de) * | 1997-09-26 | 2012-10-18 | Phoenix Contact Gmbh & Co. Kg | Steuer- und Datenübertragungsanlage und Verfahren zum Übertragen von sicherheitsbezogenen Daten |
| DE19758993B3 (de) * | 1997-09-26 | 2014-04-10 | Phoenix Contact Gmbh & Co. Kg | Steuer- und Datenübertragungsanlage und Verfahren zum Übertragen von sicherheitsbezogenen Daten |
| DE19929804B4 (de) * | 1998-07-01 | 2004-09-16 | Elan Schaltelemente Gmbh & Co. Kg | Steuerungssystem |
| DE19840562B4 (de) * | 1998-09-07 | 2007-06-28 | Phoenix Contact Gmbh & Co. Kg | Sicherheitsbezogenes Steuer- und Datenübertragungssystem |
| DE19846965A1 (de) * | 1998-10-12 | 2000-04-13 | Dieter Mayer | Leitungsüberwachung |
| US6037679A (en) * | 1998-11-30 | 2000-03-14 | Pirillo; Paul M. | Yard decorations for low voltage table |
| DE19904892B4 (de) * | 1999-02-06 | 2008-06-12 | Wratil, Peter, Dr. | Verfahren zur Fehlerunterdrückung bei Eingabeeinheiten in Steuerungseinrichtungen |
| DE19920340A1 (de) * | 1999-05-03 | 2000-11-09 | Hsm Pressen Gmbh & Co Kg | Steuerungsvorrichtung und Verfahren zur Steuerung sicherheitsrelevanter Funktionen einer gefahrbringenden Maschine |
| JP2001084014A (ja) * | 1999-09-16 | 2001-03-30 | Nippon Signal Co Ltd:The | 生産設備制御システム |
| DE19945614C1 (de) * | 1999-09-23 | 2000-12-28 | Bosch Gmbh Robert | Verfahren zur Datenübertragung zwischen einem Steuergerät für Rückhalteeinrichtungen und Sensoren |
| US6392553B1 (en) * | 2000-08-22 | 2002-05-21 | Harmon Industries, Inc. | Signal interface module |
| EP1327922B1 (de) * | 2002-01-14 | 2004-04-07 | Leuze electronic GmbH + Co KG | Sicherheitsschalteranordnung |
| US6829547B2 (en) * | 2002-04-29 | 2004-12-07 | Tektronix, Inc. | Measurement test instrument and associated voltage management system for accessory device |
| DE10230607A1 (de) * | 2002-07-08 | 2004-02-05 | Abb Patent Gmbh | Verfahren zur Überwachung einer Messeinrichtung, insbesondere einer Durchflussmesseinrichtung, sowie eine Messeinrichtung selbst |
| DE10304968B4 (de) * | 2003-02-06 | 2005-02-17 | Endress + Hauser Gmbh + Co. Kg | Vorrichtung zur Bestimmung und/oder Überwachung einer Prozessgröße eines Mediums |
| US7532492B2 (en) * | 2005-12-20 | 2009-05-12 | Tektronix, Inc. | Host controlled voltage input system for an accessory device |
| DE102007025852B3 (de) * | 2007-06-01 | 2009-01-02 | I F M Electronic Gmbh | Überwachungseinrichtung zur Erkennung einer fehlerhaften Adressierung eines Aktuator-Sensor-Interface-Slaves |
| US8699200B2 (en) * | 2010-02-05 | 2014-04-15 | Honeywell International Inc. | Secure non-contact switch |
| US8456792B2 (en) * | 2010-02-05 | 2013-06-04 | Honeywell International Inc. | Secure non-contact switch |
| DE102011016137A1 (de) * | 2011-03-30 | 2012-10-04 | Pilz Gmbh & Co. Kg | Sicherheitsschaltungsanordnung zum fehlersicheren Ein- oder Ausschalten einer gefährlichen Anlage |
| DE102011018630B4 (de) * | 2011-04-21 | 2013-02-07 | Phoenix Contact Gmbh & Co. Kg | Sicherheits-Kommunikationssystem zur Signalisierung von Systemzuständen |
| CA2805286C (en) * | 2012-02-20 | 2016-04-05 | Alstom Technology Ltd. | Control system to monitor and control a turbine |
| ES2938753T3 (es) | 2016-07-04 | 2023-04-14 | Dormakaba Deutschland Gmbh | Sistema de seguridad |
| DE202019104105U1 (de) * | 2019-07-25 | 2020-10-28 | Leuze Electronic Gmbh + Co. Kg | Lichtschrankenanordnung |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2123589A (en) † | 1982-07-06 | 1984-02-01 | Honeywell Inc | Data reporting system |
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| US4328482A (en) * | 1977-11-17 | 1982-05-04 | Consumer Electronic Products Corporation | Remote AC power control with control pulses at the zero crossing of the AC wave |
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| FR2518858A1 (fr) * | 1981-12-23 | 1983-06-24 | Jeumont Schneider | Dispositif de transmission de signaux sur une ligne assurant egalement une alimentation en tension continue |
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| JPS59163696A (ja) * | 1983-03-09 | 1984-09-14 | 株式会社日本自動車部品総合研究所 | 電気配線システム |
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| EP0247165A1 (de) * | 1985-11-26 | 1987-12-02 | Sensor Scan, Inc. | Kommunikationstechnik für ein überwachungssteuerungssystem |
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| DE3907652A1 (de) * | 1989-03-09 | 1990-09-13 | Siemens Ag | Schaltungsanordnung zum uebertragen von binaeren signalen und energie ueber eine leitung |
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-
1994
- 1994-04-13 DE DE4412653A patent/DE4412653C2/de not_active Revoked
-
1995
- 1995-04-04 EP EP95104988A patent/EP0677830B2/de not_active Expired - Lifetime
- 1995-04-04 DE DE59502719T patent/DE59502719D1/de not_active Expired - Fee Related
- 1995-04-12 US US08/421,050 patent/US5757672A/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2123589A (en) † | 1982-07-06 | 1984-02-01 | Honeywell Inc | Data reporting system |
Non-Patent Citations (1)
| Title |
|---|
| Der ASI-Slave-IC als integrierter Schaltkreis, Dr. J. Grossehelweg, Tagesband zu Kongress und Messe für industrielle Netzwerktechnik INET 1993 in Karlsruhe vom 15.-17.06.1993 † |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004014313B4 (de) * | 2003-03-30 | 2006-10-12 | Bihl & Wiedemann Gmbh | Netzwerk-Vorrichtung, insbesondere Aktuator-Sensor-Interface-Netzwerk |
| DE102004014313C5 (de) * | 2003-03-30 | 2008-08-28 | Bihl & Wiedemann Gmbh | Netzwerk-Vorrichtung, insbesondere Aktuator-Sensor-Interface-Netzwerk |
| EP3069202B1 (de) | 2013-11-13 | 2019-07-24 | Pilz GmbH & Co. KG | Sicherheitssteuerung mit konfigurierbaren eingängen |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59502719D1 (de) | 1998-08-13 |
| DE4412653A1 (de) | 1996-08-01 |
| US5757672A (en) | 1998-05-26 |
| DE4412653C2 (de) | 1997-01-09 |
| EP0677830A1 (de) | 1995-10-18 |
| EP0677830B1 (de) | 1998-07-08 |
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