Multiplexed data handler for programmable controller
US4553224A · kind A · utility
14Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1983 |
| Grant date | Nov 12, 1985 |
| Priority date | — |
| Expiry date | Aug 4, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B19/054
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A programmable controller has input and output multiplexer modules through which I/O data may be transferred. A multiplexer array is stored in the controller memory for storing this I/O data and conventional programmable controller instructions in the user control program may be employed to examine or set specified bits in the stored array. The multiplexer module may take the form of two separate modules in which one module generates a select code to a matrix of switches or operating devices and the other module transfers data to or from a selected row in the matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.