Patent ID: 8401678

Claim:
An HMI system, comprising: a mobile control and monitoring device for controlling automation components of a technical facility; a wireless transmitting device for data transmission between the mobile control and monitoring device and the automation components; a safety device arranged on the technical facility for manually releasing or blocking safety-relevant operations of the technical facility by an operator; an active operating area being an area generally surrounding the technical facility with the automation components in which an operator is present during execution of the safety-relevant operations, a locating device for locating the mobile control and monitoring device; and an evaluation device for managing the active operating area, wherein the evaluation device is configured to activate the automation components for executing safety-relevant operations triggered by the mobile control and monitoring device only when the safety device is in a release position based upon a manual release of the safety relevant operations of the technical facility by the operator, and the locating device confirms a current location of the mobile control and monitoring device within the active operating area, wherein the evaluation device blocks the automation components for safety-relevant operations via the mobile control and monitoring device when the safety device is released but the mobile control and monitoring device is outside the active operating area.