公开(公告)号：US20180159854A1

公开(公告)日：2018-06-07

申请号：US15888650

申请日：2018-02-05

Applicant: ABB Schweiz AG

Inventor： Roman Schlegel ,  Sebastian Obemeier

IPC: H04L29/06 ,  G05B19/418

CPC classification number: H04L63/0876 ,  G05B19/0428 ,  G05B19/41835 ,  G05B2219/32235 ,  H04L63/0823 ,  H04L63/083

Abstract: An industrial automation and control system is provided with a control unit and at least one electronic device. The system establishes a first data connection to an external maintenance unit. The control unit is connected to the electronic device. The electronic device establishes a second data connection to the external maintenance unit and receives or retrieves a proximity information from the external maintenance unit through the second data connection. The electronic device sends the proximity information to the control unit. The control unit grants access to the electronic device by the external maintenance unit through the first data connection to perform maintenance of the electronic device if the proximity information indicates that the external maintenance unit is within a predetermined range from the electronic device.