Abstract: The invention relates to a method for operating an automation system of a machine or an installation, wherein the automation system comprises an automation device (16). The automation device (16) is accessed by a client (10) via a server (18), wherein address information for the access operations is provided by the server (18) in an address space in the form of data objects that are organized in the form of nodes of a meshed network in an information model of the server (18). Depending on a technical task to be performed, the client (10), by calling a functionality offered by the server (18), generates data objects on the server (18) that allow the client (10) to perform those access operations to the automation device (16) and/or to at least one field device (22) networked with the server (18) via a fieldbus (20) that are necessary to achieve the technical task.