Based on the technological analysis of the production modules of the mechanical assembly area selected as the object of research, a circular assembly structure was proposed, which ensures the execution of operations with the complex, interconnected, and safe principle of its machines and the technological operations of the crane-manipulator. To ensure the automation of the working modules of the mechanical assembly flexible production area, the information provision in the form of a table of the types of technological measurement, execution, control and management system, its energy, functional and construction characteristics, according to the sequence of operations of the crane-manipulator, was created. The automation scheme of the application object was built based on the principles of the construction of the types of machines of the flexible production area, the crane-manipulator, their measurement, execution, and control system. The expediency of using the Petri net modeling method to analyze the structural scheme and functional operations of the flexible production area with computer experiments and to effectively evaluate its dynamic indicators is substantiated. To ensure the transition of the functional model to the dynamic model, in addition to the transition function of the Petri net, the modeling mechanism and control positions were determined, the decomposition of the mechanical assembly area was realized with the hierarchical Petri net, and the division of the functional model of the complex technological process into levels was ensured. At the 2nd level of the Petri hierarchical network, a general graph-scheme of the functional model of the crane-manipulator's turning-machine servicing operations was constructed and the values of the incidence matrices were determined. A Petri net marking according to the functional model of the module is determined for each production area.