Array-based mechanical elevatable units are widely used in advertising exhibitions, stage design, and interactive installations to create dynamic environments. However, controlling a large number of independently moving units presents challenges in communication and synchronization. This paper proposes a hierarchical control architecture that divides the array into groups of five units, each managed by a local controller. The central controller communicates with these local controllers via serial communication, transmitting commands that specify unit identifiers, target elevations, and movement speeds. Each local controller then actuates its respective units using screw-driven motors, ensuring synchronized and precise movements across the array. Experimental results demonstrate that this approach reduces communication load, enhances scalability, and maintains real-time responsiveness, making it suitable for large-scale applications requiring coordinated motion control of elevatable units.