WO2004023423A3 - Low power physical layer for a bus in an industrial transmitter - Google Patents

Low power physical layer for a bus in an industrial transmitter Download PDF

Info

Publication number
WO2004023423A3
WO2004023423A3 PCT/US2003/027561 US0327561W WO2004023423A3 WO 2004023423 A3 WO2004023423 A3 WO 2004023423A3 US 0327561 W US0327561 W US 0327561W WO 2004023423 A3 WO2004023423 A3 WO 2004023423A3
Authority
WO
WIPO (PCT)
Prior art keywords
drive current
bus
low power
physical layer
provides
Prior art date
Application number
PCT/US2003/027561
Other languages
French (fr)
Other versions
WO2004023423A2 (en
Inventor
Steven R Trimble
Kelly M Orth
Richard L Nelson
David G Tyson
Original Assignee
Rosemount Inc
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 Rosemount Inc filed Critical Rosemount Inc
Priority to JP2004534489A priority Critical patent/JP4524185B2/en
Priority to AU2003278758A priority patent/AU2003278758A1/en
Priority to DE10393246.1T priority patent/DE10393246B4/en
Publication of WO2004023423A2 publication Critical patent/WO2004023423A2/en
Publication of WO2004023423A3 publication Critical patent/WO2004023423A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments

Abstract

A process variable transmitter (200) connects a serial bus (232) to an accessory load. A supply limiter circuit (234) provides a first supply current limit and provides a stored energy output (236). A recessive driver circuit (238) draws a drive current from the stored energy output (236) and couples the drive current to the serial bus (232). The recessive driver circuit (238) provides a drive current limit. A dominant driver circuit (242) has a dominant state in which it conducts the drive current, and an inactive state in which the drive current is available to the accessory load.
PCT/US2003/027561 2002-09-06 2003-09-03 Low power physical layer for a bus in an industrial transmitter WO2004023423A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2004534489A JP4524185B2 (en) 2002-09-06 2003-09-03 Low power physical layer for industrial transmitter bus
AU2003278758A AU2003278758A1 (en) 2002-09-06 2003-09-03 Low power physical layer for a bus in an industrial transmitter
DE10393246.1T DE10393246B4 (en) 2002-09-06 2003-09-03 Low energy physical layer for a bus in an industrial transmitter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/236,874 US7109883B2 (en) 2002-09-06 2002-09-06 Low power physical layer for a bus in an industrial transmitter
US10/236,874 2002-09-06

Publications (2)

Publication Number Publication Date
WO2004023423A2 WO2004023423A2 (en) 2004-03-18
WO2004023423A3 true WO2004023423A3 (en) 2004-08-12

Family

ID=31977679

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/027561 WO2004023423A2 (en) 2002-09-06 2003-09-03 Low power physical layer for a bus in an industrial transmitter

Country Status (7)

Country Link
US (1) US7109883B2 (en)
JP (1) JP4524185B2 (en)
CN (1) CN100392683C (en)
AU (1) AU2003278758A1 (en)
DE (1) DE10393246B4 (en)
RU (1) RU2289851C2 (en)
WO (1) WO2004023423A2 (en)

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Also Published As

Publication number Publication date
DE10393246B4 (en) 2016-05-12
JP2005538452A (en) 2005-12-15
WO2004023423A2 (en) 2004-03-18
CN1679061A (en) 2005-10-05
CN100392683C (en) 2008-06-04
RU2005109924A (en) 2005-09-10
AU2003278758A1 (en) 2004-03-29
US7109883B2 (en) 2006-09-19
US20040046722A1 (en) 2004-03-11
DE10393246T5 (en) 2005-09-29
JP4524185B2 (en) 2010-08-11
RU2289851C2 (en) 2006-12-20

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