The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2009
Filed:
Sep. 25, 2007
Garrie D. Huisenga, Chaska, MN (US);
Richard A. Lewis, Medina, MN (US);
Donald R. Lattimer, Chaska, MN (US);
Garrie D. Huisenga, Chaska, MN (US);
Richard A. Lewis, Medina, MN (US);
Donald R. Lattimer, Chaska, MN (US);
Rosemount Inc., Eden Prairie, MN (US);
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.