Abstract: In a method for securely connecting a controller for a machine or plant to a higher-level IT system, an integration layer is provided between the controller and the IT system, a controller image of the controller is generated in the integration layer, and the controller image is accessed from the IT system. The IT system thus always accesses the controller image rather than directly the controller. This prevents malware from gaining access to the controller e.g. via a network.

Abstract: In a method for securely connecting a controller for a machine or plant to a higher-level IT system, an integration layer is provided between the controller and the IT system, a controller image of the controller is generated in the integration layer, and the controller image is accessed from the IT system. The IT system thus always accesses the controller image rather than directly the controller. This prevents malware from gaining access to the controller e.g. via a network.

Abstract: A method for monitoring a state of a technical installation includes the steps of transmitting, by using a web browser, via the Internet to web server software a user request to display a web page with first data relating to the technical installation, wherein the web server software has access to the first data, transmitting with the web server software the first data to first server software, transforming with the first server software the first data into first display data configured to be interpreted by the web server software, transmitting the first display data to the web server software for construction of the web page with the first data, and transmitting the constructed web page to the web browser for displaying the web page. A corresponding monitoring system using the method is also disclosed. Integration of a measuring device in the monitoring system is hereby facilitated.