US6192036B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating a data transmission system
Assignee: Siemens Corp
•
Filing: 1996-07-25
•
Granted: 2001-02-20
•
Expires: 2016-07-25
Abstract
Abstract A method for operating a data transmission system with a plurality of stations connected over a common bus, only one of which has access rights to the bus at a given time and controls the data transmission over the bus with call messages addressed to several stations simultaneously. The response times of the called stations are determined. The called stations are parameterized so that they acknowledge and respond to the call message with response messages in the order of their response times. The method is used in field buses in automation technology.
Inventors
- 👤 Reiner Bühler
- 👤 Udo Döbrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:29
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/14; G06F13/36; G06F13/362; G06F13/3625
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
192 words
A method for operating a data transmission system including a plurality of stations interconnected using a common bus, wherein only one station of the plurality of stations has an access right to the bus at a predetermined time and controls a data transmission over the bus using a call message, the call message being addressed to at least two of the plurality of stations, the method comprising the steps of: determining a response time of each of the at least two of the plurality of stations; and configuring each of the at least two of the plurality of stations to perform in a consecutive order one of i) acknowledge to the call message and ii) respond to the call message, the consecutive order corresponding to the response time of each of the at least two of the plurality of stations, wherein a first station of the at least two of the plurality of stations accesses the bus first, the first station having a shortest response time, and a second station of the at least two of the plurality of stations accesses the bus last, the second station having a longest response time.
Claim 2
Independent Claim
192 words
A method for operating a data transmission system including a plurality of stations interconnected using a common bus, wherein only one station of the plurality of stations has an access right to the bus at a predetermined time and controls a data transmission over the bus using a call message, the call message being addressed to at least two of the plurality of stations, the method comprising the steps of: determining a response time of each of the at least two of the plurality of stations; and configuring each of the at least two of the plurality of stations to perform in a consecutive order one of i) acknowledge to the call message and ii) respond to the call message, the consecutive order corresponding to the response time of each of the at least two of the plurality of stations, wherein a first station of the at least two of the plurality of stations accesses the bus first, the first station having a shortest response time, and a second station of the at least two of the plurality of stations accesses the bus last, the second station having a longest response time.
Claim 3
Dependent Claim
15 words
The method according to claim 1 , wherein the method is for a stored-program control.
Claim 4
Dependent Claim
52 words
The method according to claim 1 , the method further comprising the step of: in an initialization phase, determining the response time of each of the at least two of the plurality of stations by calling each of the at least two of the plurality of stations individually with the call message.
Claim 5
Dependent Claim
66 words
The method according to claim 1 , the method further comprising the step of: assigning a respective time window to each of the at least two of the plurality of stations, each respective time window defining a respective time period during which a corresponding one of the at least two of the plurality of stations can access the bus following an end of the call message.
Claim 6
Dependent Claim
79 words
The method according to claim 4 , the method further comprising the steps of: after a last one of the respective time windows is closed, verifying whether all of the at least two of the plurality of stations have one of acknowledged and responded to the call message; and if at least one of the at least two of the plurality of stations has not one of acknowledged and responded to the call message, initiating an error handling routine.
Claim 7
Dependent Claim
70 words
The method according to claim 1 , the method further comprising the steps of: transmitting a search message by a first one of the plurality of stations to other ones of plurality of stations, the search message including date identifying a preselected feature; and for each respective station of the other ones of the plurality of stations, responding to the search message if the respective station includes the preselected feature.
Claim 8
Dependent Claim
30 words
The method according to claim 6 , wherein the preselected feature is one of a bus address, a serial number, a presence of a predetermined function, and a manufacturer identification.
Claim 9
Dependent Claim
52 words
The method according to claim 1 , the method further comprising the steps of: transmitting the call message by one of the plurality of station for mapping the plurality of stations; and for each of at least one of the plurality of stations, indicating presence and operability by acknowledging the call message.
References Cited (Backward Citations)
DE3128706A1
Cited
US4481572A
Cited
US4779092A
Cited
EP0133567A2
Cited
US4595921A
Cited
US5132680A
Cited
US5150114A
Cited
DE4009685A1
Cited
US5283902A
Cited
DE4213792A1
Cited
EP0575053A1
Cited
EP0581063A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-02-20 | 2004-08-21 | 2005-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-02-20 | 2008-08-21 | 2009-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-02-20 | 2012-08-21 | 2013-02-20 | $7700.00 | Window Closed / Lapsed |