Method and apparatus for providing redundant I/O adapters in machine and process controllers
US7596635B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2005 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Mar 23, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/24175
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Methods and apparatus for redundancy in machine or process control systems provide redundant communication adapters located with the groups of I/O modules, so that if the first communication adapter faults or becomes unavailable, a second communication adapter will perform all of the necessary functions of the first adapter. The adapters are connected to a multiplexing module for communicating input data from the I/O modules to the communication adapters, for exchanging initialization data with the first communication adapter and the second communication adapter to initialize the redundant mode of operation and for monitoring communication of the first communication adapter and the second communication adapter on the network to start up the second adapter as the primary adapter for communicating both input data and output data with the I/O modules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.