WO2000028400A1 - Netzwerkteilnehmer - Google Patents
Netzwerkteilnehmer Download PDFInfo
- Publication number
- WO2000028400A1 WO2000028400A1 PCT/DE1999/003443 DE9903443W WO0028400A1 WO 2000028400 A1 WO2000028400 A1 WO 2000028400A1 DE 9903443 W DE9903443 W DE 9903443W WO 0028400 A1 WO0028400 A1 WO 0028400A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- time
- message
- network subscriber
- network
- telegrams
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
- H04J3/0673—Clock or time synchronisation among packet nodes using intermediate nodes, e.g. modification of a received timestamp before further transmission to the next packet node, e.g. including internal delay time or residence time into the packet
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
- G06F1/14—Time supervision arrangements, e.g. real time clock
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0685—Clock or time synchronisation in a node; Intranode synchronisation
- H04J3/0697—Synchronisation in a packet node
Definitions
- the invention relates to a network subscriber which can be connected to a further network subscriber, the network subscriber supplying telegrams to the further network subscriber in a transmission mode and receiving telegrams from the further network subscriber in a receive operating mode and the telegrams having messages of the same message length in a message queue of which a message is a time-of-day message.
- Such a network participant is known from the Siemens catalog ST 70, chapter 12, 1997 edition.
- This network participant is suitable for use in a distributed automation system which comprises several automation components which have to be synchronized to control a technical process in accordance with an automation task.
- a connected to the network time transmitter emits or ,, multicasting ', a time of message cyclically and by "1 Broadcasting" that is part of a multiple messages comprehensive news is schn. Based on this transmitted time message automation components synchronize their watches.
- the present invention has for its object to provide a network participant of the type mentioned, in which inaccuracies with regard to a transmission and / or Further processing time of the time can be largely avoided.
- the messages in the message queue are processed in the order in which they are deposited in this message queue.
- the invention is based on the idea of detecting the time delay which arises from delayed processing of the time message within the message queue, and of correcting the time stored in the time message accordingly.
- the means of the network subscriber record a first delay time from the time of the entry of the time message in the message queue until the start of transmission of this time message and adjust the time stored in the time message accordingly detected, the first delay time.
- these means detect a second delay time from the time of reception of the time message to the time of processing this time message and adjust the time stored in the time message in accordance with this detected second delay time.
- the means in the transmission mode provide the time message to be transmitted with an identifier or evaluate this identifier in a reception mode, which a network subscriber working in the receive mode indicates whether the time stored in the time message is adjusted. This enables the receiving network participant to take appropriate measures, e.g. B. such that an unmatched time of a time message is not further processed.
- Figure 1 to Figure 3 schematic diagrams of a network.
- 1 is a network, for. B. a so-called
- LAN Local Area Network
- Several network subscribers 2a, 2b, 2c, ... can be connected to this network 1, each of which has a receiver 3a, 3b, 3c, ... and a transmitter 4a, 4b, 4c, ...
- the receiver 3c of the network participant 2c has to transmit messages 5a, 5b, 5c, 5d, 5e of a message queue 6 by the transmitter 4a of the network participant 2a, of which the message 5d is a time-of-day message.
- This time message 5d stores the time of a timer 7 of the network participant 2a, which can be externally synchronized by a signal 8, a timer 9 of the network participant 2c being synchronized with the time entered in the time message 5d at a time of entry. Due to the fact that a network controller 10 of the transmitter 4a transmits the messages 5a, 5b, 5c, 5d, 5e to the receiver 3b in accordance with their time storage in the message queue 6, the time entered in the time message 5d deviates from the actual time at the start of transmission .
- These means 11 are supplied with the time at the time of entry in the time message 5d and the means 11 first record the delay time in the form of the number of processing cycles until the time of the time message 5d and finally adapt the time in the time message 5d according to the delay time .
- the transmitter 4a of the subscriber 2a transmits a network controller 12 and acquisition and
- Adaptation means 13 of the receiver 3c of the subscriber 2c the messages 5a, ... of the message queue 6. These acquisition and adaptation means 13 decode the messages 5a, 5b, ..., recognize the time-of-day message and record the number of processing cycles, which of Time of arrival of the time message 5d is required until the time of forwarding the time message 5d to the timer 9. In accordance with this number of processing cycles, the means 13 adapt the time and enter this corrected time in the time message 5d, whereby the timer 9 is supplied with a correct time for its synchronization.
- FIG. 3 shows a network 16 formed from two networks 14, 15.
- B. forms a network participant in the form of a so-called “gateway,” router * , "relay * or a so-called” bridge * the network transition and enables the connection of the two networks 14, 15.
- This network subscriber 18 has acquisition and adaptation means 19, 20, of which, in the event that a subscriber 21 of the network 14 transmits a time-of-day message to the subscribers 22 of the network 15 , the acquisition and adaptation means 19 adapt the time to be received by the participant 21 and the acquisition and adaptation means 20 adapt the time to be sent to the participant 22 in the time message.
- the acquisition and adaptation means 19 fit in the time to be received by the subscriber 22 and the acquisition and adaptation means 20 in the time to be sent to the subscriber 21 the time message.
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Computer And Data Communications (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59903931T DE59903931D1 (de) | 1998-11-05 | 1999-10-28 | Netzwerkteilnehmer |
EP99962042A EP1125184B1 (de) | 1998-11-05 | 1999-10-28 | Netzwerkteilnehmer |
AT99962042T ATE230499T1 (de) | 1998-11-05 | 1999-10-28 | Netzwerkteilnehmer |
US09/849,349 US6449220B1 (en) | 1998-11-05 | 2001-05-07 | Network subscriber station having a feature that prevents inaccuracies in time messages |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29819806.1 | 1998-11-05 | ||
DE29819806U DE29819806U1 (de) | 1998-11-05 | 1998-11-05 | Netzwerkteilnehmer |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/849,349 Continuation US6449220B1 (en) | 1998-11-05 | 2001-05-07 | Network subscriber station having a feature that prevents inaccuracies in time messages |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000028400A1 true WO2000028400A1 (de) | 2000-05-18 |
Family
ID=8064933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1999/003443 WO2000028400A1 (de) | 1998-11-05 | 1999-10-28 | Netzwerkteilnehmer |
Country Status (6)
Country | Link |
---|---|
US (1) | US6449220B1 (de) |
EP (1) | EP1125184B1 (de) |
AT (1) | ATE230499T1 (de) |
DE (2) | DE29819806U1 (de) |
ES (1) | ES2190278T3 (de) |
WO (1) | WO2000028400A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10004425A1 (de) * | 2000-02-02 | 2002-01-17 | Siemens Ag | Netzwerk sowie Netzwerkteilnehmer, insbesondere Feldgerät, für ein derartiges Netzwerk |
WO2002075465A2 (de) * | 2001-03-16 | 2002-09-26 | Siemens Aktiengesellschaft | Anwendungen eines schaltbaren datennetzes für echtzeit- und nichtechtzeitkommunikation |
EP1265124A1 (de) * | 2001-06-07 | 2002-12-11 | Siemens Aktiengesellschaft | Verfahren zum Übermitteln von Zeitinformation über ein Datenpaketnetz |
DE10223723B4 (de) * | 2001-05-31 | 2015-01-08 | Fisher-Rosemount Systems Inc. | Ereigniserfassungssystem für eine Folge von Ereignissen und Verfahren zum Erkennen von Ereignissen in einem Prozesssteuerungssystem |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29820339U1 (de) | 1998-11-13 | 2000-01-20 | Siemens Ag | Netzwerkteilnehmer |
US6873573B2 (en) * | 2001-09-21 | 2005-03-29 | Quartex, Inc. | Wireless synchronous time system |
US6826123B1 (en) * | 2003-10-14 | 2004-11-30 | International Business Machines Corporation | Global recovery for time of day synchronization |
DE102004035194B4 (de) * | 2004-07-21 | 2006-12-07 | Görlitz Ag | Verfahren zur Weiterleitung von Zeitinformationen |
JP2008064474A (ja) * | 2006-09-04 | 2008-03-21 | Sharp Corp | 時計装置、時計システム、同期方法、時計装置制御プログラム、および通信装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3638947A1 (de) * | 1986-11-14 | 1988-05-26 | Bosch Gmbh Robert | Verfahren zur synchronisation von rechnern eines mehrrechnersystems und mehrrechnersystem |
DE4320137A1 (de) * | 1992-06-19 | 1993-12-23 | Westinghouse Electric Corp | Synchronisation von Tageszeituhren in einem verteilten Verarbeitungsnetzwerksystem |
US5276659A (en) * | 1990-04-16 | 1994-01-04 | Kabushiki Kaisha Toshiba | Clock synchronous system for a network station |
EP0613271A2 (de) * | 1993-02-22 | 1994-08-31 | Honeywell Inc. | Verfahren und Anlage zur Zeit-Synchronisierung von Bus-LANs, mit hierarchischen Netzen |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4337463A (en) * | 1980-08-22 | 1982-06-29 | Control Data Corporation | Time synchronization master station and remote station system |
DE59108895D1 (de) * | 1991-12-18 | 1998-01-08 | Siemens Ag | Verfahren zur Uhrzeitführung in Computernetzen |
US5712867A (en) * | 1992-10-15 | 1998-01-27 | Nexus 1994 Limited | Two-way paging apparatus having highly accurate frequency hopping synchronization |
EP0703514B1 (de) * | 1994-09-24 | 1998-07-22 | Eta SA Fabriques d'Ebauches | Zeitmessung in einem Kommunikationssystem, Kommunikationssystem und Empfänger dafür |
US6236623B1 (en) * | 1998-10-16 | 2001-05-22 | Moore Industries | System and method for synchronizing clocks in a plurality of devices across a communication channel |
-
1998
- 1998-11-05 DE DE29819806U patent/DE29819806U1/de not_active Expired - Lifetime
-
1999
- 1999-10-28 AT AT99962042T patent/ATE230499T1/de active
- 1999-10-28 EP EP99962042A patent/EP1125184B1/de not_active Expired - Lifetime
- 1999-10-28 WO PCT/DE1999/003443 patent/WO2000028400A1/de active IP Right Grant
- 1999-10-28 ES ES99962042T patent/ES2190278T3/es not_active Expired - Lifetime
- 1999-10-28 DE DE59903931T patent/DE59903931D1/de not_active Expired - Lifetime
-
2001
- 2001-05-07 US US09/849,349 patent/US6449220B1/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3638947A1 (de) * | 1986-11-14 | 1988-05-26 | Bosch Gmbh Robert | Verfahren zur synchronisation von rechnern eines mehrrechnersystems und mehrrechnersystem |
US5276659A (en) * | 1990-04-16 | 1994-01-04 | Kabushiki Kaisha Toshiba | Clock synchronous system for a network station |
DE4320137A1 (de) * | 1992-06-19 | 1993-12-23 | Westinghouse Electric Corp | Synchronisation von Tageszeituhren in einem verteilten Verarbeitungsnetzwerksystem |
EP0613271A2 (de) * | 1993-02-22 | 1994-08-31 | Honeywell Inc. | Verfahren und Anlage zur Zeit-Synchronisierung von Bus-LANs, mit hierarchischen Netzen |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10004425A1 (de) * | 2000-02-02 | 2002-01-17 | Siemens Ag | Netzwerk sowie Netzwerkteilnehmer, insbesondere Feldgerät, für ein derartiges Netzwerk |
WO2002075465A2 (de) * | 2001-03-16 | 2002-09-26 | Siemens Aktiengesellschaft | Anwendungen eines schaltbaren datennetzes für echtzeit- und nichtechtzeitkommunikation |
WO2002075465A3 (de) * | 2001-03-16 | 2003-05-08 | Siemens Ag | Anwendungen eines schaltbaren datennetzes für echtzeit- und nichtechtzeitkommunikation |
US7463643B2 (en) | 2001-03-16 | 2008-12-09 | Siemens Aktiengesellschaft | Applications of a switched data network for real-time and non-real time communication |
DE10223723B4 (de) * | 2001-05-31 | 2015-01-08 | Fisher-Rosemount Systems Inc. | Ereigniserfassungssystem für eine Folge von Ereignissen und Verfahren zum Erkennen von Ereignissen in einem Prozesssteuerungssystem |
EP1265124A1 (de) * | 2001-06-07 | 2002-12-11 | Siemens Aktiengesellschaft | Verfahren zum Übermitteln von Zeitinformation über ein Datenpaketnetz |
US7372846B2 (en) | 2001-06-07 | 2008-05-13 | Siemens Aktiengesellschaft | Method for transmitting time information via a data packet network |
Also Published As
Publication number | Publication date |
---|---|
US6449220B1 (en) | 2002-09-10 |
DE59903931D1 (de) | 2003-02-06 |
EP1125184B1 (de) | 2003-01-02 |
ATE230499T1 (de) | 2003-01-15 |
ES2190278T3 (es) | 2003-07-16 |
EP1125184A1 (de) | 2001-08-22 |
US20020126582A1 (en) | 2002-09-12 |
DE29819806U1 (de) | 2000-03-16 |
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