CA1241723A - On-line serial communication interface to a transmitter from a current loop - Google Patents

On-line serial communication interface to a transmitter from a current loop

Info

Publication number
CA1241723A
CA1241723A CA000510380A CA510380A CA1241723A CA 1241723 A CA1241723 A CA 1241723A CA 000510380 A CA000510380 A CA 000510380A CA 510380 A CA510380 A CA 510380A CA 1241723 A CA1241723 A CA 1241723A
Authority
CA
Canada
Prior art keywords
current
current loop
microprocessor
input
voltage
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
Application number
CA000510380A
Other languages
English (en)
French (fr)
Inventor
William L. Thompson
Edward L. Sterling, Jr.
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.)
Babcock and Wilcox Co
Original Assignee
Babcock and Wilcox Co
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 Babcock and Wilcox Co filed Critical Babcock and Wilcox Co
Application granted granted Critical
Publication of CA1241723A publication Critical patent/CA1241723A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Dc Digital Transmission (AREA)
CA000510380A 1985-08-12 1986-05-30 On-line serial communication interface to a transmitter from a current loop Expired CA1241723A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US764,913 1985-08-12
US06/764,913 US4729125A (en) 1985-08-12 1985-08-12 On-line serial communication interface to a transmitter from a current loop

Publications (1)

Publication Number Publication Date
CA1241723A true CA1241723A (en) 1988-09-06

Family

ID=25072149

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000510380A Expired CA1241723A (en) 1985-08-12 1986-05-30 On-line serial communication interface to a transmitter from a current loop

Country Status (10)

Country Link
US (1) US4729125A (h)
EP (1) EP0213767B1 (h)
JP (1) JPS6240831A (h)
KR (1) KR870002508A (h)
AU (1) AU580428B2 (h)
BR (1) BR8603761A (h)
CA (1) CA1241723A (h)
DE (1) DE3679260D1 (h)
ES (1) ES8800546A1 (h)
IN (1) IN165982B (h)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4604566A (en) * 1985-08-07 1986-08-05 The Babcock & Wilcox Company Voltage pulse to current regulating convertor
US4816703A (en) * 1985-08-12 1989-03-28 The Babcock & Wilcox Company On-line serial communication interface from a current loop to a computer and/or terminal
US4655074A (en) * 1985-08-12 1987-04-07 The Babcock & Wilcox Company Self-zeroing pressure transmitter with automatic pressure manifold
JP2580343B2 (ja) * 1989-10-13 1997-02-12 株式会社日立製作所 フィールド計器システム及びコミュニケータ
US5416723A (en) * 1993-03-03 1995-05-16 Milltronics Ltd. Loop powered process control transmitter
JP2882316B2 (ja) * 1995-08-29 1999-04-12 株式会社デンソー データ通信装置
WO1999053627A1 (en) 1998-04-10 1999-10-21 Chrimar Systems, Inc. Doing Business As Cms Technologies System for communicating with electronic equipment on a network
AT408592B (de) * 1999-08-16 2002-01-25 Felix Dipl Ing Dr Himmelstoss Verfahren zur nutzung von störsignalen in leistungselektronischen konvertern zur datenübertragung
MXPA05004984A (es) * 2002-11-06 2005-08-26 Ambient Corp Control de potencia de salida de modem para comunicaciones de linea de energia.
US9340405B2 (en) 2012-01-26 2016-05-17 Progressive International Electronics Inc. Fuel transaction tracking system
EP2856269B1 (en) * 2012-05-29 2017-05-17 Rosemount Inc. Process control loop current verification
US9337650B2 (en) * 2013-08-28 2016-05-10 Fisher Controls International Llc Current loop input protection

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4520488A (en) * 1981-03-02 1985-05-28 Honeywell, Inc. Communication system and method
US4538136A (en) * 1981-03-30 1985-08-27 Amtel Systems Corporation Power line communication system utilizing a local oscillator
CA1173927A (en) * 1981-11-02 1984-09-04 Felix J. Houvig Communication system and method
EP0101528B1 (en) * 1982-08-19 1989-11-08 Honeywell Inc. Improvements in 2-wire analog communication systems
JPS59201537A (ja) * 1983-04-30 1984-11-15 Yamatake Honeywell Co Ltd アナログ・デイジタル通信装置

Also Published As

Publication number Publication date
BR8603761A (pt) 1987-03-10
AU5942386A (en) 1987-02-19
EP0213767A3 (en) 1988-01-13
ES556546A0 (es) 1987-10-16
AU580428B2 (en) 1989-01-12
US4729125A (en) 1988-03-01
JPS6240831A (ja) 1987-02-21
KR870002508A (ko) 1987-03-31
IN165982B (h) 1990-02-17
ES8800546A1 (es) 1987-10-16
DE3679260D1 (de) 1991-06-20
EP0213767B1 (en) 1991-05-15
EP0213767A2 (en) 1987-03-11

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Legal Events

Date Code Title Description
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