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Controller

A technology of control device and control object, applied in program control, electrical program control, general control system, etc., can solve problems such as slow access speed

Active Publication Date: 2018-10-23
ORMON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the access speed (especially the writing speed) to a large-capacity memory is slower than the access speed to a main storage device such as RAM (Random Access Memory: Random Access Memory).

Method used

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Embodiment Construction

[0039] Embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the same reference numerals are attached to the same or corresponding parts in the drawings, and descriptions thereof will be omitted.

[0040]

[0041] First, an example of the overall configuration of the control system 1 including the control device according to the present embodiment will be described.

[0042] figure 1 It is a schematic diagram showing an example of the overall configuration of the control system 1 according to the present embodiment. refer to figure 1The control system 1 according to the present embodiment includes, as a main component, a control device 100 that controls a control object.

[0043] The control device 100 may also be embodied as a computer such as PLC (programmable logic controller). The control device 100 is connected to the field device group 8 via the field bus 2 , and is connected to one or a plurality o...

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Abstract

The invention provides a controller for controlling a control target. A structure that allows records including rapidly generated data to enter a large-capacity storage is needed. The controller includes a time-series database that stores a record including data about the control target in chronological order, a data generator that generates data to be included in the record to enter the time-series database in every predetermined cycle, and a nonblocking queue included in a volatile main memory that sequentially stores the data generated by the data generator.

Description

technical field [0001] The present invention relates to a control device for collecting and storing data related to a control object. Background technique [0002] FA (Factory Automation: Factory Automation) technology that uses control devices such as PLCs (Programmable Logic Controllers) at various production sites is widely used. There is a need to subsequently analyze the data processed by such a control device. [0003] For example, Japanese Unexamined Patent Application Publication No. 2004-199670 (Patent Document 1) discloses a data collection device capable of collecting data reliably and at high speed from a CPU unit of a PLC. More specifically, Patent Document 1 discloses a data collection device connected to a PLC bus of a PLC to collect IO data from a CPU unit. [0004] Due to the development of ICT (Information and Communication Technology: Information and Communication Technology), a large amount of data can be collected and stored in the control device. In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/05
CPCG05B19/054G05B2219/1103G05B19/0428G06F16/2228G06F16/2282G05B19/4155G05B2219/23027
Inventor 西山佳秀江口重行太田政则
Owner ORMON CORP
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