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:
Nov. 17, 2020
Filed:
Jan. 24, 2020
Applicant:
Endress+hauser Process Solutions Ag, Reinach, CH;
Inventors:
Fabian Bihler, Rheinfelden, DE;
Marc Fiedler, Reinach, CH;
Assignee:
Endress+Hauser Process Solutions AG, Reinach, CH;
Primary Examiner:
Int. Cl.
CPC ...
G05B 19/042 (2006.01); H04L 25/02 (2006.01); G08C 19/12 (2006.01); G08C 25/00 (2006.01);
U.S. Cl.
CPC ...
G05B 19/042 (2013.01); H04L 25/02 (2013.01); H04L 25/0298 (2013.01); G08C 19/12 (2013.01); G08C 25/00 (2013.01);
Abstract
Method for automatic switching of a communication resistor of a HART device in or out, wherein the method comprises steps as follows: transmitting a test signal on an electrical current loop; reading from the electrical current loop a test voltage signal, which is based on the transmitted test signal; comparing the test voltage signal with a reference signal; connecting the communication resistor into the electrical current loop when the test voltage signal exceeds the reference signal.