Extending industrial control system communications capabilities

• US 20070186010A1
• Filed: 02/03/2006
• Published: 08/09/2007
• Est. Priority Date: 02/03/2006
• Status: Abandoned Application

• Current Assignee: Rockwell Automation Technologies Incorporated (Allen-Bradley Co., Inc.)
• Original Assignee: Rockwell Automation Technologies Incorporated (Allen-Bradley Co., Inc.)
• Inventors: Hall, Kenwood, Callaghan, David, Vasko, David, Tutkovics, Scot, Batke, Brian
• Application Number:
  US11/347,417
• Publication Number:
  US 20070186010A1
• Time in Patent Office: Days
• US Class Current: 709/246
• CPC Class Codes: H04L 12/4625 Single bridge functionality, e.g. connection of two networks over a single bridge
• CPC Class Codes: H04L 2012/4026 Bus for use in automation systems

Abstract

Systems and methods are provided for communications across multiple networks in a substantially transparent and seamless manner. In one aspect, an industrial automation system is provided. The system includes a communications component to facilitate communications in an industrial controller network, where the communications component can include a protocol encapsulation component, a network services interface, or a protocol converter to process multiple network protocols. A controller component employs at least one network protocol to communicate with at least one other network protocol via the communications component. Also, the communications component can include multiple communications stacks to facilitate communications with the multiple network protocols.

Claims

1. An industrial automation and communications system, comprising:

a communications component that employs a first industrial protocol as a payload protocol to transport one or more unrelated industrial protocols, where the payload protocol and the one or more unrelated industrial protocols subscribe to an open industry standard; and

a controller component that communicates to a network in accordance with the first industrial protocol and to at least one device in accordance with the one or more unrelated industrial protocols.

2. The system of claim 1, the communications component further comprising at least two communications stacks to facilitate communications with one or more multiple network protocols.

3. The system of claim 1, the controller component is associated with a programmable logic controller, a communications module, an input module, an output module or a network component.

4. The system of claim 1, further comprising at least one protocol encapsulation component transports data by wrapping at least one industrial protocol within at least one other unrelated industrial protocol.

5. The system of claim 4, further comprising a MODBUS protocol encapsulated within a Control and Information (CIP) protocol to facilitate communications between differing network devices.

6. The system of claim 4, further comprising one or more intermediate processing nodes to process encapsulated protocol.

7. The system of claim 6, further comprising an end node to de-capsulate an inner protocol from an outer protocol and apply the inner protocol to a module.

8. The system of claim 1, further comprising a network services interface that is distributed across at least two industrial control modules.

9. The system of claim 8, the network services interface interacts with at least one application object resident on a controller.

10. The system of claim 9, the application objects communicate through the network services interface across an industrial controller backplane.

11. The system of claim 9, the network services interface communicate with a network protocol stack.

12. The system of claim 11, further comprising an application programming interface or remote procedure call to communicate with the network protocol stack.

13. The system of claim 1, further comprising at least one automation device component that maps between a first industrial protocol and a second unrelated industrial protocol.

14. The system of claim 13, the first industrial protocol is a MODBUS protocol and the second industrial protocol is a control and information protocol.

15. The system of claim 13, the automation device component further comprises a read coil or a write coil instruction.

16. The system of claim 13, further comprising a register instruction or a function command.

17. The system of claim 1, further comprising at least three protocol stacks to process Ethernet/IP protocol, MODBUS TCP protocol, and Profinet protocol.

18. The system of claim 17, the stacks further comprising at least one communications layer to process network protocols.

19. A computer readable medium having a data structure stored thereon to process a plurality of network protocols, comprising:

a first data field to specify a first industrial payload protocol;

a second data field to specify a second industrial protocol, the first industrial payload protocol and the second industrial protocol specified to disassociated industry standards; and

a third data field to specify at least one network controller component to receive the first industrial payload protocol and the second industrial protocol.

20. The computer readable medium of claim 19, the first industrial payload protocol represents a Control and Information protocol.

21. The computer readable medium of claim 19, the second industrial protocol represents a MODBUS protocol.

22. The computer readable medium of claim 19, further comprising a field to specify at least one function command to control an input or an output device.

23. The computer readable medium of claim 19, further comprising a field to direct communications across a backplane.

24. An industrial control communications method, comprising:

defining an industrial payload protocol;

defining an industrial control protocol which is disassociated from the industrial payload protocol;

transporting the industrial control protocol within the industrial payload protocol; and

communicating across a network with the industrial payload protocol to at least one device that employs the industrial control protocol.

25. The method of claim 24, further comprising automatically switching between communications stacks to facilitate communications with one or more network protocols.

26. The method of claim 24, further comprising transporting data by wrapping at least one industrial protocol within at least one another communications protocol.

27. The method of claim 26, further comprising wrapping a MODBUS protocol within a Control and Information (CIP) protocol.

28. The method of claim 24, further comprising automatically stripping an inner protocol from an outer protocol and applying the inner protocol to control a module.

29. The method of claim 24, further comprising distributing a network interface across at least two industrial control modules to facilitate communications between different control protocols.

30. The method of claim 29, further comprising communicating through the network interface across an industrial controller backplane.

31. The method of claim 24, further comprising employing an automation device component to map between a first industrial protocol and a second industrial protocol.

32. The method of claim 31, the automation device component maps at least one command for an input or an output module.

33. An industrial control communications systems, comprising:

means for encapsulating data having a first industrial protocol within a payload associated with at least a second industrial protocol in a control system, the first industrial protocol and the second industrial protocol are specified to different industry standards;

means for converting the data in the control system;

means for interfacing to a protocol stack in the control system; and

means for communicating across a backplane in the control system.