Field device for digital process control loop diagnostics
US7590511B2 · kind B2 · utility
9Cited by
324References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2007 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | Sep 25, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B23/0224
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A diagnostic field device for coupling to a two-wire process control loop of an industrial process control or monitoring system includes digital communication monitoring circuitry which is configured to couple to a two-wire process control loop. The digital communication monitoring circuitry is configured to receive a digital communication signal from the two-wire process control loop. Timing circuitry in the diagnostic field device provides a timing output. Diagnostic circuitry provides a diagnostic output based upon the digital communication signal and the timing output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.