1. A process diagnosis system for the diagnosis of processes and states of a technical process controlled by a process control system having a plurality of components, the process diagnosis system comprising: a multi-agent system structured in accordance with a process and having a plurality of autonomous diagnostic agents distributed over a plurality of components of a process control system controlling the process; said diagnostic agents each having a sensor module for the acquisition of process values and messages from the process control system, an actuator module for reacting on the process, a communications module for exchanging information between said diagnostic agents, an intentions module for storing task and objective programs of said diagnostic agents, and a processing module connected to said sensor module, said actuator module, said communications module and said intentions module, said processing module storing a process model, storing information about the process and diagnostic tasks and carrying out diagnostic functions; and said processing module having an integrated neural network for learning a reference behavior of the components of the process being monitored and for enabling automatic adaptation to a new reference behavior.