Mobile function block for a PLC based distributed control system
US8255065B2 · kind B2 · utility
2Cited by
27References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2009 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Nov 21, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/13099
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Methods and architectures are described that provide function block mobility between PLCs. Each PLC configured with Mobile Function Blocks (MFBs) may forward and execute MFBs from each other. To enable MFB mobility over a communication bus, each PLC having one or more configured MFBs requires a Communication Function Block (CFB) and an MFB directory data block. Each PLC maintains an MFB directory data block to store its MFB directory which is used when other PLCs send requests to check the availability of MFBs they need to run new tasks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.