System, industrial controller and method configured to execute a closed loop control on data for cloud based applications

• US 10,353,348 B2
• Filed: 05/24/2017
• Issued: 07/16/2019
• Est. Priority Date: 05/25/2016
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Verma, Amit
• Primary Examiner(s): Hartman, Jr., Ronald D
• Application Number:
  US15/604,284
• Publication Number:
  US 20170343967A1
• Time in Patent Office: 783 Days
• CPC Class Codes: G05B 13/021 in which a variable is automatically adjusted to optimise the performance
• CPC Class Codes: G05B 19/0426 Programming the control sequence
• CPC Class Codes: G05B 19/056 Programming the PLC
• CPC Class Codes: G05B 2219/31241 Remote control by a proxy or echo server, internet - intranet
• CPC Class Codes: G05B 2219/31457 Factory remote control, monitoring through internet

Abstract

A system executing a closed loop control on data for cloud-based applications includes an industrial automation device configured to generate cloud variables, a cloud-based application on a network device with cloud-computing infrastructure, an industrial controller controlling the industrial automation device by a user-defined program which receives the cloud variables, a cloud agent communicating with the user-defined control program and the cloud-based application. The cloud agent collects the cloud variables and sends them to the cloud-based application. The cloud-based application determines updated optimized cloud variables and notifies the cloud agent with the updated optimized cloud variables. The cloud agent reloads the updated optimized cloud variables and notifies the user-defined control program with the updated optimized cloud variables. The user-defined control program includes cloud constructs which request the updated optimized cloud variables during runtime and reload the updated optimized cloud variables in the user-defined control program.

Claims

1. A system for executing a closed loop control on data for cloud-based applications, said system comprising:

an industrial automation device that generates cloud variables;

a cloud-based application which is hosted by a network device with a cloud-computing infrastructure;

an industrial controller that controls the industrial automation device by a user-defined control program, hosted by the industrial controller, said user-defined control program receiving the cloud variables;

a cloud agent that communicates with the user-defined control program and with the cloud-based application, said cloud agent collecting the cloud variables and sending the cloud variables to the cloud-based application,

said cloud-based application determining updated optimized values of the cloud variables and notifying the cloud agent in the industrial controller with the updated optimized values of the cloud variables,

said cloud agent reloading the updated optimized values of the cloud variables and notifying the user-defined control program with the updated optimized values of the cloud variables, and

said user-defined control program including cloud constructs which request the updated optimized values of the cloud variables during runtime and reloading the updated optimized values of the cloud variables in the user-defined control program.

2. The system of claim 1, wherein the industrial controller is configured as a programmable logic controller.

3. The system of claim 1, wherein the user-defined control program is configured as a programmable logic controller-program.

4. The system of claim 1, wherein the cloud agent includes a unique identity number for identifying the user-defined control program for which the cloud variables are collected and on which the cloud variables are to be updated.

5. The system of claim 1, wherein the cloud agent is configured to aggregate continuously at least the cloud variables from the user-defined control program and to send the cloud variables to the cloud-based application.

6. The system of claim 1, wherein the industrial automation device is configured to generate non-cloud variables, said cloud agent being configured to collect the non-cloud variables.

7. An industrial controller configured to execute a data transfer, said industrial controller comprising,

a user-defined control program hosted by the industrial controller, said user-defined control program controlling an industrial automation device and receiving cloud variables generated by the industrial automation device;

a cloud agent that communicates with the user-defined control program and with a cloud-based application, said cloud agent collecting the cloud variables, sending the cloud variables to the cloud-based application, notifying the user-defined control program with updated optimized values of the cloud variables generated by the cloud-based application based on the received cloud variables, and reloading the updated optimized values of the cloud variables by the cloud agent,

said cloud-based application determining the updated optimized values of the cloud variables and notifying the cloud agent in the industrial controller with the updated optimized values of the cloud variables, and

said user-defined control program including cloud constructs which request the updated optimized values of the cloud variables during runtime and reloading the updated optimized values of the cloud variables in the user-defined control program.

8. A method for executing a closed loop control on data for a cloud-based application, said method comprising:

generating cloud variables by an industrial automation device;

hosting a cloud-based application by a network device with a cloud-computing infrastructure;

controlling the industrial automation device by a user-defined control program which is hosted by an industrial controller;

receiving the cloud variables by the user-defined program;

collecting the cloud variables and sending the cloud variables to the cloud-based application with a cloud agent configured for communication with the user-defined control program and for communication with the cloud-based application;

determining by the cloud-based application updated optimized values of the cloud variables and notifying the cloud agent in the industrial controller with the updated optimized values of the cloud variables;

reloading the updated optimized values of the cloud variables by the cloud agent;

notifying the user-defined control program with the updated optimized values of the cloud variables by the cloud agent; and

providing cloud constructs by the user-defined control program which requests the updated optimized values of the cloud variables during runtime and reloading the updated optimized values of the cloud variables in the user-defined control program.

9. The method of claim 8, further comprising configuring the industrial automation device in a programming language, and defining the cloud variables in the programming language of the industrial automation device.

10. The method of claim 8, wherein the cloud agent sends the cloud variables to the cloud-based application using a wired link or a wireless radio link.

11. The method of claim 8, wherein the cloud agent includes a unique ID for identifying the user-defined control program for which the cloud variables are collected and on which the cloud variables are updated.

12. The method of claim 8, wherein the runtime is at the beginning of a scan cycle of the user-defined control program.

13. The method of claim 12, wherein the scan cycle of a user-defined control program comprises an input scan, an executing program, and an output scan.