Power supply communication system and method

• US 7,327,221 B1
• Filed: 09/30/2003
• Issued: 02/05/2008
• Est. Priority Date: 09/30/2003
• Status: Active Grant

• Current Assignee: Rockwell Automation Technologies Incorporated (Allen-Bradley Co., Inc.)
• Original Assignee: Rockwell Automation Technologies Incorporated (Allen-Bradley Co., Inc.)
• Inventors: Callaghan, David M.
• Primary Examiner(s): NGUYEN, TAI T
• Application Number:
  US10/674,969
• Time in Patent Office: 1,589 Days
• Field of Search: 340/310.01, 340/310.02, 340/310.03, 340/310.06, 340/538, 375/259, 709/203
• US Class Current: 340/12.32
• CPC Class Codes: H04B 2203/5445 Local network
• CPC Class Codes: H04B 3/542 the information being in digital form

Abstract

A system and method for configuring and monitoring devices utilizing a power line network is provided herein. Each network device (e.g., programmable logic controller, machine, or sensor) contains a power line interface to facilitate communication over a power line network. The power line interfaces contain at least one unique identifier to distinguish the interface and its associated network device from other devices on the same network and thereby enable device message exchange. The ubiquity of power lines in an industrial environment or any environment for that matter provides an accommodating medium of communication, which the subject invention exploits to set-up, configure, and program industrial control devices connected thereto. Furthermore, the subject invention can utilizes power lines after configuration, during system operation, or upon device failure to monitor, diagnose, and/or predict the health of a system device.

Claims

1. A system for controller configuration and programming, comprising:

a controller connected to a power line network;

a configuration device connected to Internet, wherein the configuration device and the controller utilize at least an interface to communicate over the power line network and the Internet to enable remote controller configuration and programming, the configuration device further comprises a diagnostic tool for inconspicuously conducting data monitoring and gathering procedures without knowledge of the controller and without interfering with operating processes within the controller; and

the interface implements a peer-to-peer communication network.

2. The system of claim 1, the interface contains a globally unique identifier and a serial number to insure unique identification.

3. The system of claim 2, the interface is contained within the controller.

4. The system of claim 1, the controller is a programmable logic controller (PLC).

5. The system of claim 1, the configuration device configures one or more modules associated with the controller.

6. The system of claim 1, the configuration device configures the controller by exchanging configuration, data, and down loading a file to the controller.

7. The system of claim 6, the down loaded file is an executable software program.

8. The system of claim 6, the down loaded file is a web page.

9. The system of claim 1, the interface is a unit separated from the controller, and the configuration device.

10. The system of claim 9, the power line is connected to the interface and a data communications connection can be made from the interface to particular devices.

11. The system of claim 1, the controller comprises a component to create a header for a message and thereafter input the message to the interface.

12. The system of claim 1, the interface comprises a filter to separate high and low frequencies outputting the high frequency to a modulator and providing the low frequencies to a connected device as power.

13. The system of claim 1, the configuration device utilizes diagnostic and prognostic data in order to alter control in response to undesirable conditions in the controller.

14. The system of claim 1, further comprising a chassis power supply connected to the power line network utilizing an interface and communicatively connected to the controller over a backplane.

15. A system for controller configuration and programming, comprising:

a controller connected to a power line; and

a configuration device that can be connected to a wide area network (WAN), wherein the configuration device and the controller utilize at least an interface to communicate over the power line and the wide area network to enable remote controller configuration and programming, the configuration device further comprises a diagnostic tool for inconspicuously conducting data monitoring and gathering procedures without knowledge of the controller and also without interfering with operating processes within the controller.

16. The system of claim 15, the interface is separate from the controller and the configuration device.

17. The system of claim 16, the power line is connected to the interface and a data communications connection can be made from the interface to particular devices.

18. The system of claim 15, the WAN is the Internet.

19. The system of claim 15, the interface is configured using hardware, software, or a combination thereof to create a plurality of virtual networks.

20. The system of claim 15, the interface comprises an address component to read header data to retrieve a destination address.