WO2020104544A1 - Adaptateur d'appareil de terrain pour la transmission sans fil de données - Google Patents

Adaptateur d'appareil de terrain pour la transmission sans fil de données

Info

Publication number
WO2020104544A1
WO2020104544A1 PCT/EP2019/081969 EP2019081969W WO2020104544A1 WO 2020104544 A1 WO2020104544 A1 WO 2020104544A1 EP 2019081969 W EP2019081969 W EP 2019081969W WO 2020104544 A1 WO2020104544 A1 WO 2020104544A1
Authority
WO
WIPO (PCT)
Prior art keywords
field device
adapter
connection element
electronics
wire
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.)
Ceased
Application number
PCT/EP2019/081969
Other languages
German (de)
English (en)
Inventor
Harald SCHÄUBLE
Ralph Stib
Mike Frank
Max Bauer
Marco BUSCEMI
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.)
Endress and Hauser SE and Co KG
Original Assignee
Endress and Hauser SE and Co KG
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 Endress and Hauser SE and Co KG filed Critical Endress and Hauser SE and Co KG
Publication of WO2020104544A1 publication Critical patent/WO2020104544A1/fr
Anticipated expiration legal-status Critical
Ceased 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—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Program control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423—Input/output
    • 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—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G05B19/054—Input/output
    • 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—Program-control systems
    • G05B19/02—Program-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] or 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] or 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
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25187—Transmission of signals, medium, ultrasonic, radio
    • 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
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25428—Field device
    • 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
    • G05B2219/31121—Fielddevice, field controller, interface connected to fieldbus
    • 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
    • G05B2219/31131—Field device with gateway functions for communication with pc and other field devices
    • 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
    • G05B2219/33—Director till display
    • G05B2219/33192—Radio link, wireless
    • 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
    • G05B2219/34313—Power supply for communication delivered by, derived from 4-20-mA current loop
    • 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]

Definitions

  • the invention relates to a field device adapter for wireless data transmission and a system of automation technology for detecting and / or setting a process variable.
  • Temperature measuring devices, conductivity measuring devices, etc. which record the corresponding process variables level, flow, pressure, temperature or conductivity.
  • Actuators such as valves or pumps, are used to influence process variables, by means of which the flow of a liquid in a pipe section or the fill level in a container can be changed.
  • field devices are all devices that are used close to the process and that supply or process process-relevant information. In connection with the invention, field devices are therefore also understood to mean remote I / Os (electrical interfaces), radio adapters or generally devices which are arranged at the field level.
  • two-wire field devices are still common in a large number of the existing automation systems, which are connected via a two-wire line to a higher-level unit, for example a control unit PLC.
  • the two-wire field devices are designed in such a way that the measurement or control values communicate as the main process variable via the two-wire line or the two-wire cable in the form of a 4-20 mA signal, i.e. be transmitted.
  • the HART protocol in which a frequency signal is superimposed on the analog current signal of 4-20 mA as a digital two-wire signal for data transmission, has proven particularly useful for the transmission of all other data.
  • the data can not only be transmitted via the two-wire line, that is to say purely wire-bound, but that the data can also be communicated wirelessly. Be it the data wirelessly to a database, for example a cloud database, and make it available there or to transfer data between the field device and a mobile device
  • Wireless control unit to transmit, for example.
  • the field device via the mobile
  • the task is accomplished by a field device adapter for wireless data transmission according to patent claim 1 and a system of automation technology
  • a field device adapter for wireless data transmission which has at least the following:
  • an adapter housing with a first end and a second end, the first end having a first connection element and a second connection element for electrical connection to field device electronics of a field device and the second end having a third connection element and a fourth connection element for electrical connection of a two-wire line, the
  • the adapter housing further includes an adapter chamber between the first and second ends;
  • adapter electronics arranged in the adapter chamber, which connect the first connection element with the third connection element through a first electrical connecting line and the second connection element with the fourth
  • the adapter electronics Connects connecting element by a second electrical connection line, the adapter electronics further comprising an unregulated supply circuit introduced into the first connection line to provide a
  • Connection element arranged in the first connecting line to tap a two-wire signal modulated onto the loop current and to translate it into a radio signal and to wirelessly communicate the radio signal and / or to receive the wireless signal wirelessly and to translate it into the two-wire signal and the translated two-wire signal via the tap point onto the loop current to modulate.
  • data can be transmitted to a cloud database via the field device adapter according to the invention.
  • a cloud database in the sense of In the present invention, a database can be understood that can be contacted by a user via the Internet. It can be provided that the
  • Database has an application, for example to visualize the data that is stored in the database.
  • a user can access his or her device, for example a PC or a mobile device, via the Internet
  • Adapter electronics comprises a HART modem, which is connected to the first connecting line via the tap and is set up to translate the two-wire signal, which is preferably based on a HART protocol, into the radio signal or vice versa, the supply circuit by the HART modem Supply voltage supplied with energy.
  • the embodiment can provide that the HART modem acts as a secondary master according to the HART
  • Protocol is set up.
  • the adapter electronics is also set up to receive the radio signal wirelessly and to translate it into the two-wire signal and with the help of the communication resistance via the tap on the
  • the adapter electronics include a radio module with an antenna for transmitting and / or
  • the radio module receives the radio signal, wherein the radio module, the two-wire signal in the radio signal preferably according to one of the following radio protocols:
  • a further advantageous embodiment of the field device adapter provides that the first end of the adapter housing is further configured such that the first end is a closed end, so that the field device adapter and the field device form two separate mechanical units.
  • An alternative embodiment of the field device adapter provides that the first end of the adapter housing is also designed such that the field device adapter can be mechanically connected or screwed to a field device, preferably a cable gland connection of a field device, particularly preferably to an M20 cable gland connection of the field device, so that the Field device adapter and the field device form a mechanically connected unit.
  • a further advantageous embodiment of the field device adapter provides that the supply circuit has at least one diode, preferably at least one Z diode, which is designed for a fixed value for the supply voltage.
  • the configuration can provide that the at least one diode, preferably the Z diode, is arranged such that a cathode of the diode is arranged in the direction of the third connection element and an anode of the diode is arranged in the direction of the first connection element.
  • the embodiment therefore provides that the at least one diode is arranged in the reverse direction in the first electrical connecting line.
  • Supply circuit has several diodes connected in series, which in
  • Flow direction are arranged in the first electrical connection line.
  • the invention further relates to a system of automation technology for recording and / or setting a process variable, comprising:
  • a first two-wire line for transmitting a loop current with a modulated two-wire signal
  • the field device further comprising field device electronics arranged within the field device housing and configured to communicate data, in particular the process variable, in the form of two-wire signals, in particular two-wire signals based on a HART protocol;
  • a field device adapter in particular according to one or more of the configurations described above, comprising an adapter housing with a first and a second end, the first end with a first and a second connection element being electrically connected to the field device electronics of the field device and the second end with a third and a fourth
  • connection element is electrically connected to the first two-wire line, the adapter housing further comprising an adapter chamber between the first and the second end, in which an adapter electronics is arranged, the adapter electronics connecting the first connection element with the third
  • connection element by a first electrical connection line and that connects the second connection element to the fourth connection element by means of a second electrical connecting line
  • the adapter electronics further comprising an unregulated supply circuit introduced into the first connecting line for providing a supply voltage from the one in the first
  • Adapter electronics is also set up via a between the
  • Tapping point arranged to tap the two-wire signal modulated onto the loop current and to translate it into a radio signal and to communicate the wireless signal wirelessly and / or to receive the wireless signal wirelessly and to translate it into the two-wire signal and to modulate the translated two-wire signal via the tap point onto the loop current.
  • Adapter housing is also designed such that the first end
  • the field device adapter and the field device are two separate mechanical units, the adapter electronics with the first and second connection element being electrically connected to the field device electronics of the field device via a connecting line, preferably a second two-wire line.
  • Adapter housing also a mechanical connection element, preferably a
  • Cable gland connection particularly preferably has an M20 cable gland connection and the field device adapter via a
  • Corresponding connection element on the field device preferably a corresponding cable screw connection, particularly preferably a corresponding M20 cable screw connection is mechanically connected to the field device, so that the field device adapter and the field device form a mechanically connected unit.
  • FIG. 2 a schematic representation of a field device adapter according to the invention
  • 3 a schematic representation of a field device to which a field device adapter is mechanically attached, so that the field devices and the field device adapter form a mechanically connected unit
  • FIG. 4 a schematic representation of a field device and a field device adapter, each of which is a separate unit form and are electrically connected to each other via a connecting line.
  • FIG. 1 schematically shows a two-wire field device which comprises a metallic housing 2 in which field device electronics 4 are arranged.
  • the field device electronics 4 is designed in such a way that it has terminals 13 via which one
  • Two-wire line 12 is electrically connected. Via the two-wire line, the field device electronics 4 and thus the field device 1 are connected to a higher-level unit, not shown separately in FIG. 1, in order to communicate with the higher-level unit by wire.
  • the measured or manipulated values are communicated as main process variables via the two-wire line 12 in the form of a 4-20 mA current signal and all other data are transmitted in the form of a digital two-wire signal in accordance with the HART standard.
  • the metallic housing 2 has a housing opening 3.
  • a cable gland 5 is inserted into the housing opening 3, so that the two-wire line 12 through the
  • Cable gland 5 can be inserted into the housing 2.
  • the cable gland 5 is preferably in the form of a PG cable gland, i.e. a cable gland with steel armored pipe thread, designed in accordance with the DIN EN 62444 standard published in May 2014.
  • the cable gland 5 can be, for example, an M20, i.e. one
  • FIG. 2 shows a schematic illustration of a field device adapter 6 according to the invention.
  • the field device adapter 6 has an adapter housing 7 with an adapter chamber 10.
  • the adapter housing 7 is designed in such a way that the field device adapter 6 can be mechanically fastened at a first end 8 to a cable screw connection 5, in particular a PG cable screw connection, of a field device 1.
  • the first end 8 of the adapter housing preferably has an M20 thread, via which the adapter can be mechanically screwed onto the cable gland of the field device.
  • the first end can be designed such that it can be connected to a PG cable gland with an M20 thread, in accordance with the DIN EN 62444 standard published in May 2014, of a field device.
  • the field device adapter 6 has at its first end 8 a first and a second connection element 16a and 16b.
  • the first and second connection elements 16a and 16b can, for example, as shown in FIG. 2, each comprise an electrical connection line for electrical connection to a field device electronics 4.
  • Adapter housing 7 designed such that a two-wire line 12 for
  • Connection element 1 1 a, 1 1 b is electrically connectable.
  • the third and fourth connection elements 1 1 a and 1 1 b include, for example, a connection terminal.
  • the field device adapter 6 has an adapter electronics 14 arranged inside the adapter chamber, which connects the first connection element 16a to the third
  • Connecting line 25 leads a loop current I from the two-wire line 12 to the field device electronics 4, which flows back via the second electrical connecting line 26 back to the two-wire line 12 connected to the field device adapter 6.
  • the field device adapter 6 has an unregulated supply circuit 15, i.e. a supply circuit which provides a defined supply voltage independently of the loop current and / or in particular also without a feedback circuit.
  • the supply circuit 15 can be formed as part of the adapter electronics 14 or separately from the adapter electronics 14.
  • the supply circuit 15 comprises at least one diode which is electrical in the first
  • Connecting line 25 is introduced and via which a supply voltage is provided by a voltage tap.
  • a Z diode or Zener diode can be arranged in the first electrical connecting line 25 such that an anode A is in the direction of the first connection element 16a and a cathode K is in the direction of the third connection element 1 1 a, so that the Z -Diode is arranged in the reverse direction to the loop current I flowing through the first electrical connecting line 25 and the voltage is tapped between the anode A and the cathode K.
  • the supply circuit 15 can also comprise a plurality of individual diodes, which are each arranged in the flow direction to the loop current I flowing through the first electrical connecting line 25, the voltage being tapped via the anode of the first diode and the cathode of the last diode.
  • the adapter electronics 14, which is fed by the supply voltage provided by the supply electronics 15, is at the first end 8 with the two
  • Connection lines to the field device electronics 4 and at the second end 9 are electrically connected to the two-wire line 12 by the connection terminals 11.
  • the adapter electronics 14 is set up so that digital two-wire signals, which are designed according to the HART standard, between the third and fourth
  • Connection element connected two-wire line 12 and the field device electronics connected via the first and second connection element to communicate in both directions.
  • the adapter electronics 14 is set up to tap the digital two-wire signals via a tap point 23 inserted into the first electrical connecting line 25 between the third connection element 11a and the supply circuit 15, to translate them into radio signals and to transmit them by radio and / or radio signals received by radio to translate into digital two-wire signal and to be modulated onto the loop current via the tap point 23.
  • the adapter electronics 14 have a radio module 19 with an antenna for transmitting or receiving the radio signals.
  • the radio module 19 is also supplied with energy by the supply circuit 15.
  • the radio module 19 is designed such that in particular radio signals according to a Bluetooth protocol or a variant modified therefrom, a 6LoWPAN protocol, a WirelessHART protocol, and / or a 6TiSCH protocol, can be transmitted.
  • the adapter electronics 14 further comprises a HART modem 17 for converting the digital two-wire signals into signals suitable for transmission by means of the radio module 19 and vice versa, which is connected for communication with the radio unit 19, for example by means of a serial interface 21, for example UART.
  • the HART modem 17 is also supplied with energy by the supply circuit 15.
  • a communication resistor 18 is also provided in the first electrical connecting line 25 so that the two-wire adapter electronics 14 can be supplied with digital two-wire signals via the tap point 23 or modulated onto the loop current I. Via the communication resistor 18 is a according to Corresponding voltage modulation implemented digital two-wire signal.
  • the communication resistor 18 is arranged between the supply circuit 15 and the first connection element 16a in the first electrical connecting line 25.
  • the HART modem 17 is preferably set up as a secondary master.
  • a field device 1 can be transmitted wirelessly via radio signals received by the radio module 19 of the field device adapter 6 and converted into corresponding digital two-wire signals by the HART mode 17.
  • Fig. 3 shows a schematic representation of a field device 1 on which a
  • Field device adapter 6 is mechanically attached with its first end 8, so that field device 1 and field device adapter 6 form a mechanically connected unit.
  • the field device adapter 6 can, as shown in FIG. 3, be arranged such that it is located between the housing opening 3 of the field device 1 and the cable screw connection 5 that actually belongs to the housing opening of the field device.
  • the adapter housing 7 is designed such that the cable gland 5 can be fastened or screwed onto the correspondingly designed second end 9.
  • the second end 9 can be designed in the form of a PG cable gland with an M20 thread in accordance with the DIN EN 62444 standard published in May 2014.
  • the field device adapter 6 can also be designed such that the
  • Adapter housing 7 serves as a cable gland and thus a separate one
  • Field device 1 mechanically attached field device adapter a mechanically connected unit.
  • FIG. 4 shows a schematic illustration of a field device 1 and a field device adapter 6, each of which forms a separate mechanical unit and electrically via a connecting line, in particular a second one
  • Two-wire line 27 are connected to each other. The fact that the field device adapter 6 is only electrical via the connecting line 27 and not via a mechanical one
  • the field device adapter 6 can be placed flexibly in an automation system, so that it is virtually independent of the
  • Field device 1 can be installed. Reference symbol list
  • Mechanical connection element e.g. M20 thread for mechanical connection of the adapter to a cable gland of a field device
  • Connection line preferably second two-wire line

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Quality & Reliability (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

L'invention concerne un adaptateur d'appareil de terrain (6) pour la transmission sans fil de données, présentant au moins : un boîtier d'adaptateur (7) présentant une première et une seconde extrémité (8, 9), la première extrémité étant conçue de telle manière que l'adaptateur d'appareil de terrain peut être raccordé mécaniquement à un appareil de terrain (1), et la seconde extrémité étant conçue de telle manière qu'une ligne bifilaire (12) peut être raccordée électriquement à l'adaptateur d'appareil de terrain pour la transmission de données, le boîtier d'adaptateur présentant par ailleurs une chambre d'adaptateur (10) entre la première et la seconde extrémité ; une électronique d'alimentation (15) agencée dans la chambre d'adaptateur, configurée pour délivrer une tension d'alimentation via une prise de tension ; au moins une électronique d'adaptateur (14) alimentée par la tension d'alimentation ; un câble de raccordement d'adaptateur (16) se trouvant à la première extrémité, permettant le raccordement électrique de l'électronique d'adaptateur à une électronique d'appareil de terrain (4) de l'appareil de terrain. L'électronique d'adaptateur est configurée pour communiquer les signaux bifilaires entre l'électronique d'appareil de terrain pouvant être raccordée électriquement à la première extrémité par le câble de raccordement d'adaptateur et la ligne bifilaire pouvant être raccordée à la seconde extrémité. L'électronique d'adaptateur est par ailleurs configurée pour convertir les signaux bifilaires en signaux radio ou inversement, et pour les envoyer ou les recevoir par radio.
PCT/EP2019/081969 2018-11-22 2019-11-20 Adaptateur d'appareil de terrain pour la transmission sans fil de données Ceased WO2020104544A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018129491.3A DE102018129491A1 (de) 2018-11-22 2018-11-22 Feldgeräteadapter zur drahtlosen Datenübertragung
DE102018129491.3 2018-11-22

Publications (1)

Publication Number Publication Date
WO2020104544A1 true WO2020104544A1 (fr) 2020-05-28

Family

ID=68654477

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/081969 Ceased WO2020104544A1 (fr) 2018-11-22 2019-11-20 Adaptateur d'appareil de terrain pour la transmission sans fil de données

Country Status (2)

Country Link
DE (1) DE102018129491A1 (fr)
WO (1) WO2020104544A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040259533A1 (en) * 2003-06-18 2004-12-23 Mark Nixon Self-configuring communication networks for use with process control systems
EP1925918A2 (fr) * 2006-11-27 2008-05-28 VEGA Grieshaber KG Boite de connection pour la transmission d'un signal
US20090253388A1 (en) * 2004-06-28 2009-10-08 Kielb John A Rf adapter for field device with low voltage intrinsic safety clamping
DE202010016362U1 (de) * 2009-12-23 2011-03-24 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Anordnung mit einer übergeordneten Steuereinheit und zumindest einem mit der Steuereinheit verbindbaren intelligenten Feldgerät
US20170019721A1 (en) * 2015-07-15 2017-01-19 Honeywell International Inc. Wireless device for capturing stranded data on field devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040259533A1 (en) * 2003-06-18 2004-12-23 Mark Nixon Self-configuring communication networks for use with process control systems
US20090253388A1 (en) * 2004-06-28 2009-10-08 Kielb John A Rf adapter for field device with low voltage intrinsic safety clamping
EP1925918A2 (fr) * 2006-11-27 2008-05-28 VEGA Grieshaber KG Boite de connection pour la transmission d'un signal
DE202010016362U1 (de) * 2009-12-23 2011-03-24 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Anordnung mit einer übergeordneten Steuereinheit und zumindest einem mit der Steuereinheit verbindbaren intelligenten Feldgerät
US20170019721A1 (en) * 2015-07-15 2017-01-19 Honeywell International Inc. Wireless device for capturing stranded data on field devices

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Publication number Publication date
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