Method for transmitting a data telegram between a real-time domain and a non-real-time domain and a coupling unit

• US 20040246988A1
• Filed: 03/23/2004
• Published: 12/09/2004
• Est. Priority Date: 09/26/2001
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Klotz, Dieter, Bruckner, Dieter, Schimmer, Jurgen, Gotz, Franz-Josef
• Granted Patent: US 7,701,933 B2
• Time in Patent Office: Days
• US Class Current: 370/465
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 67/56 Provisioning of proxy services store-and-forward switching systems in data switching networks H04L12/54
• CPC Class Codes: H04L 67/564 Enhancement of application control based on intercepted application data
• CPC Class Codes: H04L 67/63 Routing a service request depending on the request content or context
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion

Abstract

The invention relates to a method for transmitting a data telegram from a non-real-time domain to a real-time domain, comprising the following steps: generation of a non-real-time data telegram comprising a useful data zone, the data telegram containing a real-time or a non-real-time identifier in addition to a data telegram identifier (identifier i) in the useful data zone thereof when the real time identifier is provided; monitoring of the non-real-time data telegram for the presence of a real time identifier by the coupling unit if the real-time identifier is provided; transmission of the useful data and real-time identifier (identifier i) from the useful data zone of the non-real-time data telegram to a user interface of the coupling node; storage of the useful data in a storage zone of a communication memory which is associated with the identifier.

Claims

1-18. -18. (canceled)

19. A method for transmitting a data telegram from a non-realtime domain into a realtime domain, comprising:

creating a non-realtime data telegram with a useful data zone, the useful data zone including useful data and an identification for designating the data telegram as realtime or non-realtime;

transmitting the data telegram via the non-realtime domain to a coupling unit;

checking, by the coupling unit, the data telegram to determine whether the identification designates realtime or non-realtime;

if the identifcation designates realtime, separating the useful data and the identification from the useful data zone of the data telegram and transferring the useful data and the identification from the useful data zone to a communication memory;

storing the useful data in a storage zone of the communication memory; and

cyclicly processing the useful data to create a realtime-data telegram from the useful data stored in the communication memory.

20. The method in accordance with claim 19, wherein, if the identification designates non-realtime, further processing the data telegram as a non-realtime data telegram.

21. The method in accordance with claim 19, wherein the identification is coded in an address of the non-realtime data telegram.

22. The method in accordance with claim 21, wherein with the address involved is a specific multicast address.

23. The method in accordance with claim 19, wherein the non-realtime data telegram involved is an Ethernet data telegram.

24. The method in accordance with claim 19, wherein the realtime domain features a communication cycle divisible into a realtime and a non-realtime subcycle, and a non-realtime data telegram from the non-realtime domain which does not have a realtime identification, is transmitted via the non-realtime subcycle in the realtime domain.

25. A coupling unit for receiving a data telegram from a non-realtime domain and for forwarding the data telegram in a realtime domain, comprising:

a device adapted to receive a non-realtime data telegram with a useful data zone, the useful data zone containing useful data and a realtime or a non-realtime identification;

a device adapted to check the non-realtime data telegram for the presence of the realtime identification;

a device adapted to transfer the useful data and the realtime identification from the useful data zone of the non-realtime data telegram to a user interface, if the realtime identification is present;

a device adapted to store the useful data in a storage zone of a communication memory assigned to the realtime identification; and

a device adapted to cycle process a send list containing the realtime identification to create a realtime data telegram for forwarding over the realtime domain.

26. The coupling unit in accordance with claim 25, wherein the device adapted to check the non-realtime data telegram for the presence of the realtime indentification further checks for the presence of a specific address in the non-realtime data telegram.

27. The coupling unit in accordance with claim 26, wherein the specific address involved is a multicast address.

28. The coupling unit in accordance with claim 25, wherein the non-realtime data telegram involved is an Ethernet data telegram.

29. The coupling unit as claimed in claim 25, wherein the non-realtime data telegram is forwarded with a realtime identification in a realtime cycle of a communication cycle.

30. A computer program product, especially digital storage medium, for creating a non-realtime data telegram for a subscriber of a non-realtime domain, comprising:

a send list that is cyclically processed comprising a sequence of data telegram identifications of realtime-data telegrams of a realtime domain; and

a non-realtime data telegram created for each identification of the send list,

whereby the non-realtime data telegram features a useful data zone and, in the useful data zone, the data telegram identification and useful data are accommodated.

31. The computer program product in accordance with claim 30, wherein the program means is embodied for identification of the non-realtime data telegram with a realtime identification.

32. The computer program product in accordance with claim 30, wherein the realtime identification involved is a specific address, preferably a specific multicast address.

33. A method for transmission of a data telegram from a realtime domain into a non-realtime domain, comprising:

processing cyclically a receive list containing a data telegram identification of a realtime data telegram;

storing the useful data of the received realtime data telegram with the identification in a communication memory;

transfering the useful data and the identification to a user interface; and

creatiing a non-realtime-data telegram with a useful data zone, in which case the useful data zone is used to accommodate the useful data and the data telegram identification.

34. The method in accordance with claim 33, wherein the realtime domain features a communication cycle divisible into a realtime subcycle and a non-realtime subcycle, and a non-realtime data telegram received from the realtime domain via a non-realtime subcycle of the communication cycle is forwarded unchanged into the non-realtime domain.

35. A coupling unit for transmission of a data telegram from a realtime domain into a non-realtime domain, comprising:

a device adapted to cyclically process a receive list which contains data telegram identifications of realtime-data telegrams;

a device adapted to store the useful data of a received realtime data telegram in a communication memory;

a device adapted to transfer the useful data and the identification to a user interface; and

a device adapted to create a non-realtime data telegram with a useful data zone, in which case the useful data zone is used to accommodate the useful data and the data telegram identification.

36. The coupling unit in accordance with claim 35, wherein the realtime domain features a communication cycle, divisible into a realtime subcycle and a non-realtime subcycle, and a non-realtime data telegram received from the realtime domain via a non-realtime subcycle of a communication cycle can be transferred unchanged into the non-realtime domain.