Programmable controller and program capacity changing method thereof
US5610809A · kind A · utility
7Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1994 |
| Grant date | Mar 11, 1997 |
| Priority date | — |
| Expiry date | Dec 28, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99957
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A programmable controller comprises a user memory in which a plurality of programs each divided to functional blocks or data are stored as files and a user memory management table in which data on storage space, attribute, and capacity of each file is stored. This structure enables newly writing a file from a peripheral device, changing a capacity of each file, and freely accessing each file maintaining continuity of file data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.