公开(公告)号：US20230160591A1

公开(公告)日：2023-05-25

申请号：US17531474

申请日：2021-11-19

Applicant: Johnson Controls Tyco IP Holdings LLP

Inventor： Brandon A. Sloat ,  Mark Hansen ,  Donald A. Gottschalk ,  Brandon Michael DuPrey ,  Anthony Louis Miller

IPC: F24F11/56 ,  F24F11/49 ,  F24F11/48

CPC classification number: F24F11/56 ,  F24F11/49 ,  F24F11/48

Abstract: Methods and systems for reconnecting a device with an expired device operational certificate in a building management system (BMS) are disclosed. One method includes identifying that a device operational certificate of a first device has expired, sending an instruction to a second device to accept the expired device operational certificate as valid, receipt of the instruction causing the second device to relax an expiration date and accept the expired device operational certificate as valid, and delivering a replacement device operational certificate to the first device to replace the expired device operational certificate.