Modular programmable controller
US4442504A · kind A · utility
112Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1981 |
| Grant date | Apr 10, 1984 |
| Priority date | — |
| Expiry date | Oct 21, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/15078
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A programmable controller is formed by connecting separate functional modules to a common backplane bus. A bus arbitration scheme and a message handling technique are disclosed to tightly couple the functional modules together to form an efficient programmable controller. A number of improvements to the CPU module and I/O scanner module are disclosed to further improve the performance of the resulting system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.