Telescopio Nazionale Galileo control system upgrade completed

Telescopio Nazionale Galileo (TNG) has successfully deployed its new Telescope Control System (TCS). This paper focuses on the technical details of the upgrade, highlighting key improvements and showcasing the enhanced functionality and reliability of the new TCS. The development and deployment were carefully planned, incorporating 3D simulations and overlapping with other maintenance operations to minimize the impact on observational time. With new advanced features, such as a modular architecture and the use of a graphical programming language, the TCS enables easy on-the-fly testing of control algorithms for future developments.