The ABB PFVI401 is an intelligent controller designed specifically for the steel rolling industry7. It integrates advanced measurement and control technologies to optimize the operation of rolling mills, improve product quality, and increase production efficiency7. It features high – precision sensors for accurately measuring parameters such as rolling force and roll gap, and a real – time operating system for fast – response and precise control of the rolling mill7. With its modular design, it is easy to expand and maintain7. In addition, it offers an intuitive user interface for convenient operation and maintenance7.