Redundant process controllers for segregated supervisory and industrial control networks
US10042330B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2014 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Jul 29, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system includes redundant first process controllers configured to communicate over redundant supervisory networks in an industrial process control and automation system. Each first process controller is configured to operate in primary or secondary mode. The system also includes redundant second process controllers configured to communicate over redundant industrial control networks in the industrial process control and automation system. Each second process controller is configured to operate in primary or secondary mode. The system further includes a private network configured to communicatively couple the first and second process controllers. Each controller could be associated with at least three Media Access Control (MAC) addresses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.