I/O module with reduced isolation circuitry
US5479618A · kind A · utility
23Cited by
17References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1995 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Jan 9, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/34208
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An industrial controller I/O module includes on-board programming circuitry in the form of a microprocessor and associated memory, a first programmable logic circuit and a second programmable logic circuit connected through an isolation interface. The programmable logic circuits are programmed by the microprocessor on power up by reading configuration data from the PROM and writing it to the logic circuits to define their I/O circuit functions in controlling the I/O drives on a controlled machine or process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.