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:
Mar. 02, 2021
Filed:
Mar. 28, 2018
Endress+hauser Conducta Gmbh+co. KG, Gerlingen, DE;
Björn Haase, Stuttgart, DE;
Ralf Schmidt, Kembs, FR;
Markus Kilian, Merzhausen, DE;
Helmut Kalteis, Marktoberdorf, DE;
Endress+Hauser Conducta GmbH+Co. KG, Gerlingen, DE;
Abstract
The disclosure relates to a method for operating a field device of automation technology, comprising: establishing a wireless and/or wired communications link between the field device and an operating unit; establishing a communications link between an authentication card and the field device, using the operating unit, wherein at least the field device and the authentication card contain symmetric or asymmetric key information; and carrying out an at least unilateral authentication of the authentication card on the field device, as well as an operating unit for carrying out the method according to the invention.