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:
May. 27, 2025
Filed:
Feb. 07, 2023
Fisher-rosemount Systems Inc., Round Rock, TX (US);
Sergio Diaz, Round Rock, TX (US);
Gary Law, Round Rock, TX (US);
Fisher-Rosemount Systems Inc., Round Rock, TX (US);
Abstract
A two-wire routing device includes an upstream communication interface for communication with a controller, a two-wire communication and power interface configured to convey communication and power to a field device over a two-wire link, and a router electronic controller. The router electronic controller is coupled to the upstream communication interface and the two-wire communication and power interface. The router electronic controller receives, via the upstream communication interface, a safe state command from the controller, and transmits, via the two-wire communication and power interface, the safe state command to a field device over the two-wire link. The router electronic controller further executes a secondary de-energization scheme for the field device to control a power switch to cut power over the two-wire link to the field device.