Industrial control system
US4347563A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1980 |
| Grant date | Aug 31, 1982 |
| Priority date | — |
| Expiry date | Jun 16, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2205
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In an industrial control system, a plurality of remote data processing units communicate with one another over a communications link. Some of the processing units called primary remotes have inputs and outputs and control a process operation in response to signals received on the inputs by signals transmitted over the outputs. One or more of the remote processing units, referred to as a redundant remote, monitors a plurality of the other primary remotes to determine whether any of the monitored primary remotes has failed. If any of the primary remotes fails, the redundant remote takes over operation of the process controlled by the failed primary remote by sending instructions and commands over the communications link interconnecting the primary and redundant remotes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.