MEASUREMENT TRANSMITTER HAVING A PLURALITY OF FIELDBUS ADDRESSES AND METHOD FOR RETRIEVING MEASURED VALUES FROM SUCH A MEASUREMENT TRANSMITTER

• US 20130187790A1
• Filed: 08/25/2011
• Published: 07/25/2013
• Est. Priority Date: 10/01/2010
• Status: Abandoned Application

• Current Assignee: Endress + Hauser Wetzer GmbH + Company KG (Endress+Hauser AG)
• Original Assignee: Endress + Hauser Wetzer GmbH + Company KG (Endress+Hauser AG)
• Inventors: Konrad, Michael, Konrad, Stephan, Korn, Michael
• Application Number:
  US13/876,917
• Publication Number:
  US 20130187790A1
• Time in Patent Office: Days
• US Class Current: 340/870.3
• CPC Class Codes: G05B 19/0423 Input/output
• CPC Class Codes: G05B 2219/21005 Several slave modules connected to same I-O of master, multiplexed by master
• CPC Class Codes: G05B 2219/21113 Bus interface has multiplexer, control register, data shift register
• CPC Class Codes: G05B 2219/25006 Interface connected to fieldbus
• CPC Class Codes: G05B 2219/25335 Each module has connections to actuator, sensor and to a fieldbus for expansion
• CPC Class Codes: G05B 2219/31121 Fielddevice, field controller, interface connected to fieldbus
• CPC Class Codes: G08C 19/00 Electric signal transmission systems G08C17/00 takes precedence

Abstract

A measurement transmitter having an interface for transmission of measured values via a fieldbus, wherein communication via the fieldbus occurs according to a fieldbus protocol, wherein the number of measured values provided by the measurement transmitter exceeds the number of measured values retrievable by means of a basic command of the fieldbus protocol, wherein the measurement transmitter has a plurality of fieldbus addresses, and wherein a logic unit is provided, which serves so to distribute the measured values among the plurality of fieldbus addresses of the measurement transmitter that the measured values are retrievable via the plurality of fieldbus addresses of the measurement transmitter by means of the basic command.

Claims

1-10. -10. (canceled)

11. A measurement transmitter having:

an interface for transmission of measured values via a fieldbus; and

a logic unit, wherein;

communication via the fieldbus occurs according to a fieldbus protocol;

the number of measured values provided by the measurement transmitter exceeds the number of measured values retrievable by means of a basic command of the fieldbus protocol;

the measurement transmitter has a plurality of fieldbus addresses; and

said logic unit serves so to distribute the measured values among the plurality of fieldbus addresses of the measurement transmitter that the measured values are retrievable via the plurality of fieldbus addresses of the measurement transmitter by means of a basic command.

12. The measurement transmitter as claimed in claim 11, wherein:

the measured values are retrievable from the measurement transmitter without manufacturer-specific or general commands being used.

13. The measurement transmitter as claimed in claim 11, wherein:

said basic command is a command, which all devices compatible with the applied fieldbus protocol use.

14. The measurement transmitter as claimed in claim 13, wherein:

a retrieval of the measured values provided by the measurement transmitter occurs via the fieldbus by means of telegrams, which are addressed to the different fieldbus addresses of the measurement transmitter and include said same basic command.

15. The measurement transmitter as claimed in claim 14, wherein:

basic measured values are retrievable from the associated fieldbus address by means of the basic command.

16. The measurement transmitter as claimed in claim 11, wherein:

said logic unit serves, furthermore, to associate the measured values provided by the measurement transmitter with the basic measured values retrievable with the basic command via the different fieldbus addresses of the measurement transmitter.

17. A method for retrieving measured values, provided by a measurement transmitter, which is connected to a fieldbus and has a plurality of fieldbus addresses, wherein communication via the fieldbus occurs according to a fieldbus protocol, and wherein the number of measured values provided by the measurement transmitter exceeds the number of measured values retrievable by means of a basic command of the fieldbus protocol, the method comprises the steps of:

distributing the measured values among the plurality of fieldbus addresses of the measurement transmitter; and

retrieving the measured values from the measurement transmitter by means of the basic command via the different fieldbus addresses.

18. The method as claimed in claim 17, wherein:

no manufacturer-specific or general commands are used for retrieving the measured values of the measurement transmitter (M).

19. The method as claimed in claim 17, wherein:

the measured values provided by the measurement transmitter are retrieved via the fieldbus by means of telegrams, which are addressed to the different fieldbus addresses of the measurement transmitter and include the same basic command.

20. The method as claimed in claim 17, wherein:

the measured values provided by the measurement transmitter are associated with the basic measured values retrievable with the basic command via the different fieldbus addresses of the measurement transmitter.