1. A system for the automatic performance of a plant process comprising: a control system (PCS/DCS) included in a production management system (CPM), the control system including a processor that is configured with integration model code for executing an integration model, wherein the processor is configured to integrate various software systems by establishing a connection to an enterprise resource planning system (ERP) and exchange information between the plant process and a business process such that production data are received from the processes substantially in real time and an updated status of a production order is received continuously, and wherein the integration model includes: placeholders associated with variables for at least one of events, devices and plants, placeholders associated with functions to be executed, functionalities which link the variables and call up the functions, mappings of parameters between the software systems to be linked, and requests for loading information from one software system to another, wherein the variables include a number of work orders (WO 1 ), a number of plants (EN 1 ), a number of asset alerts (AM 1 ), and a number of user interfaces (DV 1 ).