Title:
PROGRAMMABLE CONTROLLER, PROGRAMMABLE CONTROLLER SYSTEM, DATA STORAGE METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/239171
Kind Code:
A1
Abstract:
A PLC (100) is provided with: a data collection unit (142) which repeatedly collects, from a device memory (110), data that changes during equipment control; a storing unit (145) which, when a predetermined first trigger condition is established, stores, in a memory unit (130), the data collected by the data collection unit (142) at a point in time corresponding to the establishment of the first trigger condition; an addition unit (146) which, when a second trigger condition different from the first trigger condition is established, adds additional information to at least one of first data, which is data stored in the memory unit (130) by the storing unit (145), and second data collected by the data collection unit (142) after the collection of the first data; and an erasing unit (147) which, after the first data and the second data are stored in the memory unit (130), erases the second data from the memory unit (130) while retaining the first data in the memory unit (130) on the basis of the additional information.
Inventors:
LEE WEIHAU (JP)
Application Number:
PCT/JP2021/018148
Publication Date:
November 17, 2022
Filing Date:
May 13, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G05B19/05
Foreign References:
| JP2020016938A | 2020-01-30 | |||
| JP2013186623A | 2013-09-19 |
Attorney, Agent or Firm:
KIMURA Mitsuru (JP)
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