Title:
プラント監視制御システム
Document Type and Number:
Japanese Patent JP7311049
Kind Code:
B2
Abstract:
When a general-purpose operation part (22, 23) is hidden by a window part (24), it becomes hard for an operator to visually check an association state between a field device (10A, 10B) and a hardware switch (3). If such a display state has occurred, an HMI server (5) stops a health check signal which is being output to a PLC (6). The PLC (6) detects the stop of the health check signal and forcibly cancels the association state between the field device (10A, 10B) and the hardware switch (3). Thus, a human error can be prevented.
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Inventors:
Rao Vittal
Akira Nojima
Nobuo Shimizu
Ryo Shimizu
Akira Nojima
Nobuo Shimizu
Ryo Shimizu
Application Number:
JP2022539081A
Publication Date:
July 19, 2023
Filing Date:
November 24, 2020
Export Citation:
Assignee:
Toshiba Mitsubishi Electric Industrial Systems Co., Ltd.
International Classes:
G05B23/02
Domestic Patent References:
| JP20198434A | ||||
| JP201825999A | ||||
| JP6323841B2 | ||||
| JP6552775B1 | ||||
| JP201846726A |
Attorney, Agent or Firm:
Patent Attorney Takada / Takahashi International Patent Office