User and the machine interaction allows the achievement of more efficient and flexible manufacturing systems. In that sense manufacturing systems with embedded intelligence will be able to interact with the user, providing him/her with key information at specific times (maintenance, repair, tuning, optimization…). Because of it, the job will gain more attractiveness (mainly for young people) and will be also safer for the employee (a key aspect considering how European population is getting older). These intelligent production systems will be able also to interact with the operators to collect, store and transmit employee’s knowledge and expertise and not to loose it when the employee left the company.