Manufacturing has to adapt permanently to changing situations in order to stay competitive. It demands a flexible and easy-to-use integration of production equipment and ICT systems on the shop floor. The contribution of this paper is the presentation of the implementation architecture of the Manufacturing Integration Assistant (MIALinx) that simplifies this challenge. The integration steps range from integrating sensors over collecting and rule-based processing of sensor information to the execution of required actions. Furthermore, we describe the implementation of MIALinx by commissioning it in a manufacturing environment to retrofit legacy machines for Industrie 4.0. Finally, we validate the suitability of our approach by applying our solution in the production environment of a medium-size company.