Title:
SCADA WEB HMI SERVER DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/015022
Kind Code:
A1
Abstract:
The present invention increases the speed of a browser-based HMI server device. An HMI server device (10) connects to an HMI terminal (20) that executes a web browser (21) and to a PLC (2). The HMI server (10) comprises a changed PLC signal extraction process (16) and a browser display update process (18). The changing PLC signal extraction process (16) extracts a changed PLC signal name and a changed PLC signal value for a PLC signal that has changed. The browser display update process (18): extracts, from screen information (13), a parts name and a screen name associated with the same PLC signal name as the changed PLC signal name; extracts, from browser information (15), a browser name associated with the extracted screen name; and transmits updated data including the extracted parts name and the changed PLC signal value to the running web browser (21) corresponding to the extracted browser name.
Inventors:
FUJIEDA HIROYUKI (JP)
SHIMIZU NOBUO (JP)
NOJIMA AKIRA (JP)
SHIMIZU NOBUO (JP)
NOJIMA AKIRA (JP)
Application Number:
PCT/JP2020/027141
Publication Date:
January 28, 2021
Filing Date:
July 10, 2020
Export Citation:
Assignee:
TOSHIBA MITSUBISHI ELEC IND (JP)
International Classes:
G05B23/02; G05B19/05
Domestic Patent References:
| WO2018087864A1 | 2018-05-17 |
Foreign References:
| JP2003280732A | 2003-10-02 | |||
| JP2013235320A | 2013-11-21 | |||
| JP2006072442A | 2006-03-16 |
Attorney, Agent or Firm:
TAKADA, Mamoru et al. (JP)
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