Method of application protocol monitoring for programmable logic controllers
US7308327B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 12, 2006 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Jun 25, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P90/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method is provided of application protocol monitoring for a manufacturing line including the steps of constructing a manufacturing line model for the manufacturing line, utilizing logic for a programmable logic controller (PLC), executing a control logic simulation of the PLC logic to validate the PLC logic against the manufacturing line model, creating a database containing validated I/O tag expected intents confirmed from the control logic simulation, and applying the application protocol monitoring device to a network for the manufacturing line to monitor traffic across the network and continuously compare the I/O tag status across the network to the database of validated I/O tag expected intents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.