Use of a really simple syndication communication format in a process control system

• US 8,612,545 B2
• Filed: 10/04/2011
• Issued: 12/17/2013
• Est. Priority Date: 09/22/2005
• Status: Expired due to Fees

• Current Assignee: Fisher-Rosemount Systems Incorporated (Emerson Electric Company)
• Original Assignee: Fisher-Rosemount Systems Incorporated (Emerson Electric Company)
• Inventors: Cahill, James S., Schleiss, Trevor D., Law, Gary K.
• Primary Examiner(s): Moore, Ian N.
• Assistant Examiner(s): Nguyen, Thai
• Application Number:
  US13/252,727
• Publication Number:
  US 20120078403A1
• Time in Patent Office: 805 Days
• Field of Search: 709217-219, 709/224, 709/225, 709/208
• US Class Current: 709/218
• CPC Class Codes: G05B 2219/31181 Controller and device have several formats and protocols, select common one
• CPC Class Codes: G05B 2219/35582 Control format in browser, use of xtml and xslt
• CPC Class Codes: G05B 23/027 Alarm generation, e.g. communication protocol; Forms of alarm

Abstract

Devices and applications within a process control system make data generated therein available using a really simple syndication (RSS) XML communication format, thereby making this data easily retrievable from the plant and useable for various purposes both within and outside of the plant. The RSS data communications may provide RSS data for use in control of the plant or for use in other applications not directly associated with the control of the plant, including third party applications run on devices outside of the plant. The RSS data sent from one device to another may include enclosures, such as video, audio or text files, or may include references such as hyperlinks to other sources of information stored on the receiving device or on a further device that may be accessed and used to understand or process the RSS data.

Claims

1. A process control device for use in a process plant, comprising:

(a) a process controller that is;

1) communicatively coupled to a computing device of the process plant, the computing device having an operator interface,

2) configured to store and execute a control module configured to receive a sensor signal from a first field device and generate at least one corresponding control signal to at least one of the first field device or a second field device for controlling equipment in the process plant based on the sensor signal, the control module including at least one function block used in implementing a process control loop in the process plant,

3) directly connected to each of the first field device and the second field device via a corresponding input/output device or card, and

4) further configured to communicate process control data to other process control devices in the process plant using a format that is not a web content syndication format;

(b) a web content syndication format data generator that converts the process control data into web content syndication formatted data, the process control data including a process control signal or an output of a process control application; and

(c) a web content syndication format data communication unit that directly communicates, via a communications link, the web content syndication formatted data to a further process control device within the process plant.

2. The process control device of claim 1, wherein the web content syndication format is the really simple syndication (RSS) format, the web content syndication format data generator is an RSS data generator, the web content syndication formatted data is RSS data, and the web content syndication format data communication unit is an RSS data communication unit.

3. The process control device of claim 2, wherein the RSS data generator comprises an RSS data conversion unit that converts the process control data into the RSS format.

4. The process control device of claim 3, wherein the RSS data conversion unit includes a memory for storing the RSS data.

5. The process control device of claim 2, further including a subscriber list for the RSS data and wherein the RSS data communication unit communicates the RSS data to subscriber devices based on the subscriber list.

6. The process control device of claim 2, further including an event list associated with the RSS data and wherein the RSS data communication unit communicates the RSS data to the further process control device based on an occurrence of an event within the events list.

7. The process control device of claim 2, further including a media memory storage that stores media files for use with the RSS data.

8. The process control device of claim 7, wherein the media memory storage stores one or more of a video file, an audio file, a color image file, or a black and white image file.

9. The process control device of claim 7, wherein the media memory storage stores one or more applications that may be executed to process the RSS data.

10. The process control device of claim 7, wherein the media memory storage stores specific data associated with the process control device or an application within the process control device to be sent as part of the RSS data.

11. The process control device of claim 10, wherein the specific data includes one of global positioning system data or mapping data.

12. The process control device of claim 10, wherein the media memory storage stores a reference to a source of a media file or an application external to the process control device for use with the RSS data.

13. The process control device of claim 2, further including an RSS data receiver that receives, via the communications link, further RSS data directly from another process control device and a user interface for interfacing with a user with respect to the received RSS data.

14. The process control device of claim 13, further including a storage unit that stores one or more data files or applications associated with the received RSS data and that may be used in conjunction with the user interface to interface with a user with respect to the received RSS data.

15. The process control device of claim 14, further including a processing unit that processes the received RSS data to determine a reference to one of the one or more data files or applications stored within the process control device.

16. The process control device of claim 13, further including a processing unit that processes the received RSS data to determine a reference to a source of one or more data files or applications stored outside of the process control device but accessible to the process control device via the communication link.

17. A process control system, comprising:

a) a first process control device configured to generate first process data in a format that is not a web content syndication data format, the first process control device including a first process controller that is;

1) communicatively coupled to a computing device having an operator interface,

2) configured to store and execute a control module configured to receive a sensor signal from a first field device and generate at least one corresponding control signal to at least one of the first field device or a second field device for controlling equipment in the process control system based on the sensor signal, the control module including at least one function block used in implementing a process control loop in the process control system, and

3) directly connected to each of the first field device and the second field device via a corresponding input/output device or card; and

b) a second process control device configured to generate second process data in the format that is not the web content syndication data format, the second process control device being one of;

1) a second process controller,

2) at least one of the first field device, the second field device, or a third field device that is configured to perform a physical action in the process control system to affect a process variable or to sense the process variable, or

3) the corresponding input/output device or card;

wherein the first process control device includes;

(a1) a really simple syndication (RSS) data conversion unit that converts the first process data generated by the first process control device into an RSS communication format to produce RSS data;

(a2) a memory for storing the RSS data; and

(a3) a communication unit adapted to communicate the RSS data from the first process control device directly to the second process control device via a communications link within the process control system.

18. The process control system of claim 17, further including a subscriber list for the RSS data and wherein the communication unit communicates the RSS data to subscribers based on the subscriber list.

19. The process control system of claim 17, further including an event list associated with the RSS data and wherein the communication unit communicates the RSS data to the second process control device based on an occurrence of an event within the events list.

20. The process control system of claim 17, further including a media memory storage that stores media files for use with the RSS data, including one or more of a video file, an audio file, a color image file, or a black and white image file.

21. The process control system of claim 20, wherein the media memory storage stores one or more applications that may be executed to process the RSS data.

22. The process control system of claim 20, wherein the media memory storage stores specific data associated with a particular process control device or associated with an application that created the RSS data.

23. The process control system of claim 22, wherein the specific data includes one of global positioning system data or mapping data.

24. The process control system of claim 20, wherein the media memory storage stores a reference to a source of a media file or an application outside of the first process control device and outside of the second process control device, the source of the media file or the application for use with the RSS data.