| 摘要 |
The present invention relates to an industrial automation and control system, IACS, comprising a control unit and at least one electronic device, wherein the system is configured to establish a first data connection to an external maintenance unit, wherein the control unit is connected to the at least one electronic device, wherein the at least one electronic device is configured to establish a second data connection to the external maintenance unit and is configured to receive or retrieve a proximity information from the external maintenance unit through the second data connection, wherein the at least one electronic device is further configured to send the proximity information to the control unit, and wherein the control unit is configured to grant access to the electronic device by the external maintenance unit through the first data connection for performing maintenance of the at least one electronic device if the proximity information indicates that the external maintenance unit is within a predetermined range from the at least one electronic device. The present invention also relates to a corresponding method, a corresponding apparatus as well as a corresponding computer program product comprising one or more computer readable media having computer executable instructions for performing the steps of the method. |
