CA2454968C - Method for data exchange between an operating and monitoring program and a field device - Google Patents

Method for data exchange between an operating and monitoring program and a field device Download PDF

Info

Publication number
CA2454968C
CA2454968C CA002454968A CA2454968A CA2454968C CA 2454968 C CA2454968 C CA 2454968C CA 002454968 A CA002454968 A CA 002454968A CA 2454968 A CA2454968 A CA 2454968A CA 2454968 C CA2454968 C CA 2454968C
Authority
CA
Canada
Prior art keywords
operating
interface
internet
field
monitoring program
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 - Fee Related
Application number
CA002454968A
Other languages
French (fr)
Other versions
CA2454968A1 (en
Inventor
Reinhard Griech
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 CA2454968A1 publication Critical patent/CA2454968A1/en
Application granted granted Critical
Publication of CA2454968C publication Critical patent/CA2454968C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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—Programme-control systems
    • G05B19/02—Programme-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
    • G05B19/41855—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 by local area network [LAN], network structure
    • 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
    • G05B2219/31135—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
    • G05B2219/31138—Profibus process 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
    • G05B2219/31151—Lan local area network
    • 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
    • G05B2219/31156—Network structure, internet
    • 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
    • G05B2219/31158—Wan wide area network
    • 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
    • G05B2219/31186—TCP-IP internet protocol
    • 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
    • G05B2219/33187—Serial transmission rs232c, rs422, rs485 communication link
    • 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
    • G05B2219/34038—Web, http, ftp, internet, intranet server
    • 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]

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Computer And Data Communications (AREA)
  • Debugging And Monitoring (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

In connection with a method for the data exchange between an operating and monitoring program BA and a field device (10, 20, 30), which is connected via a field bus adapter (5) with the internet, the operating and monitoring program BA accesses a serial interface (8), which is connected with an internet interface (13). By means of this a data exchange between the operating and monitoring program BA via the internet is possible without extensive program changes.

Description

METHOD FOR DATA EXCHANGE BETWEEN AN OPERATING AND MONITORING
PROGRAM AND A FIELD DEVICE

The invention relates to a method for a data exchange between an operating and monitoring program and a field device, which is connected with the internet via a field bus adapter.

In process control technology, field devices are often used for detecting and affecting process values.
Examples of field devices are temperature measuring devices, which detect the temperature of a process medium, flow meters, which detect the flow of a process medium through a section of a pipeline, or fill indicators, which determine the fill level of a fluid or of bulk material in a container.
Process control is performed from a control system which is connected with the individual field devices via a data bus. All information required for process control is exchanged between the control system and the field devices via the data bus.
A data bus which is often employed operates in accordance 2u with the HART standard of the HARTR foundation. Field devices which operate in accordance with the HART standard are also called HART devices.
Besides this, Profibus(R) or Foundation Fieldbus(R), inter alia, are often employed as field buses in process automation technology.
Besides the straight transmission of measured values, field devices also permit the transmission_.of different information stored in the field device, for example parameters (zero point, measured value capacity, etc.), calibration curves, as well as diagnostic information. The parameters can be set from the control system or from an operating and display device.
This process is also called configuration and parameterization of the field device.
The field device must be configured and parameterized prior to each first use or after a device change.
The operating and monitoring programs mostly run on computer units (PCs, laptops), which are connected via a serial COM interface (for example RS232, RS485) with a field bus adapter connected to a field bus.
Commercially available operating and monitoring programs are, for example, CommuWin of the Endress + Hauser-Maulburg, or ReadWin of the Endress + Hauser Wetzer, companies.
The disadvantage of these standard application programs lies in that they can only be used in the immediate vicinity of the field bus, since a cable connection between the computer unit and the field bus adapter is necessary. A data exchange over greater distances (worldwide in the extreme case) is theretore not possible.
In principle, standard application programs can be rewritten in such a way that they access the field devices via an internet interface. However, this requires a considerable programming outlay and extensive adaptations.
Application programs for control systems are furthermore known, which access the internet via an internet interface and establish the connection with the field buses via appropriate gateways. Worldwide access to field devices becomes possible by means of this.
In most cases, application programs for control systems are voluminous and expensive.

The object of some embodiments of the invention is based on creating a method . .f - .

for data exchange between an operating and monitoring program and a field device which, by simple means and with the use of standard application programs, makes possible the access to field devices over extended distances via the internet.
In some embodiments, this object is attained by means of a method for data exchange between an operating and monitoring program and a field device which is connected to the internet by mean s of a field bus adapter, and is distinguished in that the operating and monitoring program accesses a serial interface which is connected with an internet interf ace .
In some embodiments, the operating and monitoring device furthermore accesses a serial interface. Therefore the operating and monitoring devices does not "realize" that the connection to the field device.does not take place via an RS232 connection, but via the internet.
Advantaqeous further developments of the irlvention are recited in the dependent claims.
In accordance with a first embodiment of the invention, the connection between the operating and application program and the internet interface takes place via a first COM interface, a zero modem cable and asecond COM interface.
Here, the connection takes place via two physically present .interfaces, for example COM1 and COM2 of the computer unit on which the operating and monitoring program runs.
This application only requires an appropriate driver for the internet interface which performs the program conversion and manages the addresses of the field bus adapters.
In accordance with a second embodiment of the invention, the connection between the operating and application program and the internet interface takes place via a virtual serial interface.
Although this design requires aslightly greater programming outlay, it can also be used in connection with computer units, in particular laptops, which do not have two physically present serial interfaces.
According to one aspect of the present invention, there is provided a method for a data exchange between an operating and monitoring program BA which is running on a computing unit and a field device, comprising the steps of:
connecting the field device to the internet via a field bus adapter; connecting the computing unit with the internet via an internet interface; providing a connection in the computer unit between the internet interface and a serial interface; and the operating and monitoring program BA

accesses the serial interface in a customary manner thereby exchanging data between the field device and the operating and monitoring program BA over the internet.

According to another aspect of the present invention, there is provided a computer unit for exchanging data between an operating and monitoring program and a field device, comprising: an internet interface for connecting the computer unit with the field device via the internet and a fieldbus adapter; a serial interface which is accessed by the operating and monitoring program; and a connection between the serial interface and the internet interface for transferring data between the operating and monitoring program and the field device.

3a The invention will be explained in greater detail by means of the following drawings.

Fig. 1 shows a field bus with a computer unit and several field devices in a schematic representation, Fig. 2 shows the computer unit in accordance with a first embodiment of the invention, Fig. 3 shows the computer unit in accordance with a second embodiment of the invention.

A field bus'1.with several field devices 10, 20, 30 is represented in Fig. 1.
The field'devices 10, 20, 30 are connected with a control system 4 via'a data bus line 3, or with a computing unit 9 via a field bixs adapter 5(for'example CommuBox of the Endress + Hauser company). To this end a connecting line 7 leads from the field bus adapter 5 to the COM plug conne-ctor 8 of the computer unit 9.
Serial data transmission on the connecting line 7 takes place in accordance with the RS232 or RS485 ~tandards.
The computer unit 9 is a perAnal computer (PC) or a portable laptop.
The field bus 1-operates in accordance with known international standards, such as HARTR, Profibus(R) or Foundation Fieldbus (R) .
Examples of field devices are, for example, temperature measuring devices, which detect the temperature of a process medium, flow meters, which detect the flow through a section of a pipeline, or fill indicators, which determine the fill level of a bulk material in a container.
The respective measured values are transmitted to the control system 4 through the data bus line 3. The control system =4 controls the entire process course on the basis of the detected measured values.
Besides straight measured value transmission, intelligent field devices (smart field devices) allow the transmission of various information stored in the field device. Thus it is possible to ball up, or change, various parameters from the control system 4, or from the computing unit 9. Such parameters are, for example, the zero point, measured value capacity (range) or the unit in which the measured value is put out:.
In some embodiments, for example in connection with till level measuring devices operating in accordance with the echo principle, to read out echo curves. Conclusions regarding the ability of the fill level measuring device to function can be drawn from the echo curve.
In some embodiments, besides this it is also possible to call up diagnostic information. Some field devices are already capable of performing a self-diagnosis. This means that defined core values of the field device are monitored for deviations from the set values.
Special operating and monitoring programs are used for displaying this information and changes of the parameters.
These operating and monitoring progra,ms are installed in the computing unit 9. Customary programs directly access the COM
interface 8 of the computing unit 9.
Fig. 2 shows a computing unit 9 in accordance with a first embodiment of the invention. Besides a first COM interface 8, the computing unit 9 has a second COM interface 8a.
The two interface's 8 and 8a are connected with each other by means of a zero modem cable 11. The computing unit 9'has an internet interface 13, which is connected via the internet with a field bus adapter 5 connected to the field'bus 1.
The operating and monitoring program BA accesses the COM1 interface 8 of the computing unit 9 in the customary manner. The data connection with the internet interface 13 takes place via the zero modem cable 11 and the COM2 interface 8a. By means of an appropriate driver program (bus client), the internet interface 13 sees to the conversion of the data to the TCP/IP standard and, via a stored address book, to the selection of the appropriate internet address of the field bus adapter 9'. Data are exchanged between the computing unit 9 and the field bus adapter 5 via the internet. The field bus adapter sees to the conversion of the protocol to the appropriate field bus standard, for example HARTR.
The fact that several different field buses can be-controlled via the internet interface 13 without mechanical re-plugging can be cited as a further advantage.
Fig. 3 shows an alternative embodiment of the invention.
Here, the connection between the operating and monitoring program BA and the internet interface 13 takes place via a virtual interface V.
This design requires an increased software outlay since it is necessary to write a software program for the virtual interface. But the advantage here is that it is also suitable for computing units 9 which do not have,two COM interfaces, which is often the case with laptops.
In some embodiments, access via the internet to field devices 21 is made possible by means of conventional operating and monitoring programs, without elaborate conversions of the source code of the operating and monitoring program being necessary: This is of importance mainly when the source code of the operating and monitoring program is not known because there is no company-owned program.

Claims (10)

CLAIMS:
1. A method for a data exchange between an operating and monitoring program BA which is running on a computing unit and a field device, comprising the steps of:

connecting the field device to the internet via a field bus adapter;

connecting the computing unit with the internet via an internet interface;

providing a connection in the computer unit between the internet interface and a serial interface; and the operating and monitoring program BA accesses the serial interface in a customary manner thereby exchanging data between the field device and the operating and monitoring program BA over the internet.
2. The method as defined in claim 1, wherein the connection between the serial interface and the internet interface is provided via a first COM interface, a null modem cable and a second COM interface.
3. The method as defined in claim 1, wherein the connection between the serial interface and the internet interface is provided via a virtual interface.
4. The method as defined in claim 1, further comprising the step of:

operating the field bus adapter in accordance with the HART® standard.
5. The method as defined in claim 1, further comprising the step of:

operating the field bus adapter in accordance with the Profibus® standard.
6. The method as defined in claim 1, further comprising the step of:

operating the field bus adapter in accordance with the Foundation Fieldbus® standard.
7. A computer unit for exchanging data between an operating and monitoring program and a field device, comprising:

an internet interface for connecting the computer unit with the field device via the internet and a fieldbus adapter;

a serial interface which is accessed by the operating and monitoring program; and a connection between the serial interface and the internet interface for transferring data between the operating and monitoring program and the field device.
8. The device as defined in claim 7, wherein said field bus adapter operates in accordance with the HART®
standard.
9. The device as defined in claim 7, wherein said field bus adapter operates in accordance with the Profibus®
standard.
10. The device as defined in claim 7, wherein said field bus adapter operates in accordance with the Foundation Fieldbus® standard.
CA002454968A 2001-07-25 2002-07-18 Method for data exchange between an operating and monitoring program and a field device Expired - Fee Related CA2454968C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10136732A DE10136732A1 (en) 2001-07-25 2001-07-25 Method for data exchange between an operating and monitoring program and a field device
DE10136732.5 2001-07-25
PCT/EP2002/007975 WO2003010613A1 (en) 2001-07-25 2002-07-18 Method for data exchange between an operating and monitoring program and a field device

Publications (2)

Publication Number Publication Date
CA2454968A1 CA2454968A1 (en) 2003-02-06
CA2454968C true CA2454968C (en) 2009-05-19

Family

ID=7693360

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002454968A Expired - Fee Related CA2454968C (en) 2001-07-25 2002-07-18 Method for data exchange between an operating and monitoring program and a field device

Country Status (7)

Country Link
EP (1) EP1410121B1 (en)
JP (1) JP2005516270A (en)
CN (1) CN100514235C (en)
AT (1) ATE406604T1 (en)
CA (1) CA2454968C (en)
DE (2) DE10136732A1 (en)
WO (1) WO2003010613A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006033651A (en) * 2004-07-21 2006-02-02 Yokogawa Electric Corp Communication system
DE102004037064A1 (en) * 2004-07-30 2006-02-16 Abb Patent Gmbh Method and device for functional testing of a field device before its initial commissioning
US7675932B2 (en) * 2006-11-09 2010-03-09 Rosemount Inc. Adapter for providing digital communication between a field device and a computer
JP2010244296A (en) * 2009-04-06 2010-10-28 Mitsubishi Electric Engineering Co Ltd Monitor and control system
DE102009045384A1 (en) * 2009-10-06 2011-04-07 Endress + Hauser Process Solutions Ag Method for operating a fieldbus interface
WO2012166657A1 (en) * 2011-05-27 2012-12-06 Nomadix, Inc. Serial redirector device and associated methods
DE102011082004A1 (en) * 2011-09-01 2013-03-07 Endress + Hauser Gmbh + Co. Kg Audio converter for data exchange between e.g. mobile phone and valve or field bus of overfill safety system for measuring filling level in liquid tank, has modulator transmitting audio signals to jack bush of mobile device
DE102013213040B4 (en) * 2013-07-03 2019-07-04 Vega Grieshaber Kg Transmission device for a measuring device and method for transmitting raw data with a transmission device
EP3336631B1 (en) * 2016-12-16 2021-06-16 Siemens Aktiengesellschaft Process control system and system planning tool
KR102211876B1 (en) * 2020-07-14 2021-02-03 강재종 Internet of things interworking devices and method for traditional fieldbus-based automatic control systems

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5765021A (en) * 1996-03-27 1998-06-09 Pc-Tel, Inc. Computer system having second program for transferring data between second port connected to a first port and the software portion of a modem
DE19739297C2 (en) * 1997-09-08 2001-11-15 Phoenix Contact Gmbh & Co Automation system and connection device for transparent communication between two networks
WO1999019782A1 (en) * 1997-10-13 1999-04-22 Rosemount Inc. Communication technique for field devices in industrial processes
TW436709B (en) * 1997-11-17 2001-05-28 Ibm Method and apparatus for interacting with hardware devices remotely
FI111760B (en) * 1999-04-16 2003-09-15 Metso Automation Oy Wireless control of a field device in an industrial process

Also Published As

Publication number Publication date
WO2003010613A1 (en) 2003-02-06
CN1533522A (en) 2004-09-29
ATE406604T1 (en) 2008-09-15
CN100514235C (en) 2009-07-15
DE10136732A1 (en) 2003-02-13
EP1410121A1 (en) 2004-04-21
EP1410121B1 (en) 2008-08-27
DE50212710D1 (en) 2008-10-09
CA2454968A1 (en) 2003-02-06
JP2005516270A (en) 2005-06-02

Similar Documents

Publication Publication Date Title
US7098771B2 (en) Method for offline-parametering of a field device of the process automation technology
US5796602A (en) Method and apparatus using a device description for a conventional device
CA2454968C (en) Method for data exchange between an operating and monitoring program and a field device
US8745278B2 (en) Field device with self description
US8881133B2 (en) Method for servicing a field device of automation technology
US9316521B2 (en) Method for monitoring a process system having a field bus in the process automation technology
US7188200B2 (en) Method for data exchange between an operating and monitoring program and a field device
US8219790B2 (en) Determining device-internal parameter addresses from fieldbus-specific parameter addresses of a field device
CN109782667B (en) Pressure test system and method, computer device and readable storage medium
US20080126659A1 (en) Variable Field Device For Use In Automation Systems
US20050071522A1 (en) Method for operating a field device
US20060141931A1 (en) Method for exchanging data between field devices
US20070088518A1 (en) Automated method for generating program modules, to be used for controlling field devices, from a machine-readable parameterized specification of the field devices
CN107817765A (en) Based on ARM11 and FPGA global function digital control systems
CN102538904A (en) HART (Highway Addressable Remote Transducer)-communication-based capacitive level transmitter and working method thereof
EP0879444B1 (en) Method and apparatus using a device description for a conventional device
CN116132252A (en) Manual operator with HART communication diagnosis function
CN202720025U (en) Electric buoy level gauge based on highway addressable remote transducer (HART) communication
Pranowo et al. Communication between PLC different vendors using OPC server improved with application device
US20110252169A1 (en) Method for Data Exchange
RU2321042C1 (en) Method for transmitting data of measurements between two measuring transformers
CN110098991B (en) Equipment for accessing EtherCAT bus system to universal Internet of things cloud platform
Li et al. Design of communication system in intelligent instrument based on HART protocol
CN2660536Y (en) Warm moisture measurement controller based on TCP/IP intelligent network
JP2006508429A (en) Method for offline parameterization of field devices in process automation technology

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20200831