Operating a programmable logic controller
US10274918B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2015 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Mar 17, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/24214
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A programmable logic controller for an industrial control system is disclosed which includes an application logic execution layer and at least one of an update checking layer and an output checking layer. The application logic layer is configured for processing sensor input data to generate an output parameter for an actuator. The output checking layer is configured for outputting only an allowed output parameter to the actuator. The update checking layer is configured for verifying whether application logic update defined by application logic update data corresponds to an application logic update in a list of allowed logic updates, and the application logic is updated only if the update data is allowed application logic update data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.