Control system in which communication between devices is controlled based on execution condition being satisfied, gateway device used in the control system, and control method for the control system
US10445139B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2015 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Mar 18, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/6418
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a control monitoring system in which an information system is connected with a control system, the control system includes a control device that performs at least one of control and monitoring of a control target, a computer that performs a process related to the control or the monitoring, and a gateway device that relays a communication message between the control device and the computer. The gateway device acquires a predetermined state index related to a first communication message when the first communication message is received from the computer, determines whether or not a predetermined execution condition is satisfied based on the state index, transmits a second communication message based on the received first communication message to the control device when the execution condition is satisfied, and does not transmit the second communication message to the control device when the execution condition is not satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.