Multi-protocol field device interface with automatic bus detection
US8112565B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2006 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Mar 25, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/25217
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A multi-protocol interface for coupling a field device to a general purpose computer is disclosed. The interface includes measurement circuitry to perform a plurality of measurements on a connected process communication loop to determine a process communication loop type. Then, if the interface includes a protocol interface module that matches the detected loop type, the protocol interface module can be engaged. A method for coupling a field device to a general purpose computer is also provided. In one aspect, power from the general purpose computer is used to power the process communication loop, if the interface determines that the loop is not powered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.