The increasing complexity of manufacturing systems requires performing methods, models, and tools for the design of control software. The system command analysis (ACSY) model is a CASE (computed aided software engineering) type model based upon the cooperation of models belonging to the set of disparate models: flow diagrams, standard IEC 848 Function Chart for Control System (FCCS), and a data processing language and data structure called Dictionary. The Software Producer, which is developed in object-oriented design is discussed. >
