Control system and control device

Patent metadata

Field	Value
Publication number	US-10627784-B2
Application number	US-201816161102-A
Country	US
Kind code	B2
Filing date	Oct 16, 2018
Priority date	Dec 28, 2017
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

A first control unit includes a data transfer relay unit that executes a process of transferring input data corresponding to a signal input to an input and output unit to a second control unit according to a request from the second control unit, and/or a process of transferring output data that defines a signal to be output from the input and output unit from the second control unit to the input and output unit, a storage unit that holds the data transferred by the data transfer relay unit, and a monitoring processing unit that determines whether or not a predetermined trigger condition has been satisfied on the basis of the data held in the storage unit, and outputs a value of any data held in the storage unit according to a predetermined output configuration when it is determined that the trigger condition has been satisfied.

First claim

What is claimed is:

1. A control system comprising:
a first control unit that executes a first control program;
a second control unit that executes a second control program; and
an input and output unit that serves to input a signal from a field and/or output a signal to the field,
wherein the first control unit includes:
a data transfer relay unit that executes a process of transferring input data corresponding to a signal input to the input and output unit to the second control unit according to a request from the second control unit, and/or a process of transferring output data that defines a signal to be output from the input and output unit from the second control unit to the input and output unit,
a storage unit that holds the data transferred by the data transfer relay unit, and
a monitoring processing unit that determines whether or not a predetermined trigger condition has been satisfied on the basis of the data held in the storage unit, and outputs a value of any data held in the storage unit according to a predetermined output configuration when it is determined that the trigger condition has been satisfied.

2. The control system according to claim 1 ,
wherein the first control unit further includes an interface that receives a detachable recording medium, and
the monitoring processing unit writes the value of the data to the detachable recording medium.

3. The control system according to claim 2 , wherein the monitoring processing unit reads the trigger condition and the output configuration from the detachable recording medium.

4. The control system according to claim 2 , wherein the monitoring processing unit outputs a time-series value over a predetermined period including a timing at which it is determined that the trigger condition has been satisfied.

5. The control system according to claim 2 ,
wherein the trigger condition and the output configuration are defined using variables available in the second control unit,
the first control unit has memory mapping information indicating a correspondence relationship between the variables used for definition of the trigger condition and the output configuration and the data held in the storage unit, and
the memory mapping information is generated at the same time when the second control program is generated.

6. The control system according to claim 2 ,
wherein the first control unit is a standard control unit that controls a control target according to a standard control program,
the second control unit is a safety control unit that executes a safety program, and
the input and output unit includes a safety input and output unit that serves to input a signal from a safety component and/or output a signal to the safety component.

7. The control system according to claim 1 , wherein the monitoring processing unit validates a determination as to whether or not the trigger condition has been satisfied in response to a user operation.

8. The control system according to claim 7 , wherein the second control unit transmits a command for validating the determination as to whether or not the trigger condition has been satisfied to the first control unit in response to a user operation with respect to the second control unit.

9. The control system according to claim 8 , wherein the monitoring processing unit outputs a time-series value over a predetermined period including a timing at which it is determined that the trigger condition has been satisfied.

10. The control system according to claim 9 ,
wherein the trigger condition and the output configuration are defined using variables available in the second control unit,
the first control unit has memory mapping information indicating a correspondence relationship between the variables used for definition of the trigger condition and the output configuration and the data held in the storage unit, and
the memory mapping information is generated at the same time when the second control program is generated.

11. The control system according to claim 9 ,
wherein the first control unit is a standard control unit that controls a control target according to a standard control program,
the second control unit is a safety control unit that executes a safety program, and
the input and output unit includes a safety input and output unit that serves to input a signal from a safety component and/or output a signal to the safety component.

12. The control system according to claim 7 ,
wherein the trigger condition and the output configuration are defined using variables available in the second control unit,
the first control unit has memory mapping information indicating a correspondence relationship between the variables used for definition of the trigger condition and the output configuration and the data held in the storage unit, and
the memory mapping information is generated at the same time when the second control program is generated.

13. The control system according to claim 7 ,
wherein the first control unit is a standard control unit that controls a control target according to a standard control program,
the second control unit is a safety control unit that executes a safety program, and
the input and output unit includes a safety input and output unit that serves to input a signal from a safety component and/or output a signal to the safety component.

14. The control system according to claim 1 , wherein the monitoring processing unit outputs a time-series value over a predetermined period including a timing at which it is determined that the trigger condition has been satisfied.

15. The control system according to claim 1 , further comprising a configuration reception unit that provides a user interface screen for generating the trigger condition and the output configuration.

16. The control system according to claim 15 , wherein the configuration reception unit outputs a message when data not held in the storage unit of the first control unit is designated as the trigger condition or the output configuration.

17. The control system according to claim 16 ,
wherein the trigger condition and the output configuration are defined using variables available in the second control unit,
the first control unit has memory mapping information indicating a correspondence relationship between the variables used for definition of the trigger condition and the output configuration and the data held in the storage unit, and
the memory mapping information is generated at the same time when the second control program is generated.

18. The control system according to claim 1 ,
wherein the trigger condition and the output configuration are defined using variables available in the second control unit,
the first control unit has memory mapping information indicating a correspondence relationship between the variables used for definition of the trigger condition and the output configuration and the data held in the storage unit, and
the memory mapping information is generated at the same time when the second control program is generated.

19. The control system according to claim 1 ,
wherein the first control unit is a standard control unit that controls a control target according to a standard control program,
the second control unit is a safety control unit that executes a safety program, and
the input and output unit includes a safety input and output unit that serves to input a signal from a safety component and/or output a signal to the safety component.

20. A control device that cont

Assignees

• Omron Tateisi Electronics Co

Inventors

• Kanaya Yuki
• Matsui Asahi
• Maekawa Norihiro
• Fujimura Ryosuke

Classifications

• G05B19/4186

  by protocol, e.g. MAP, TOP · CPC title

• G05B9/03 Primary

  with multiple-channel loop, i.e. redundant control systems · CPC title

• G05B2219/35291

  Record history, log, journal, audit of machine operation · CPC title

• G05B23/0235

  based on a comparison with predetermined threshold or range, e.g. "classical methods", carried out during normal operation; threshold adaptation or choice; when or how to compare with the threshold · CPC title

• G05B19/0425

  Safety, monitoring · CPC title