Architecture reconstruction and optimization of front-end interlock system in TPS

The Front-End Interlock System in the Taiwan Photon Source (TPS) has been upgraded to address deployment complexity and maintainability issues observed during early operations. To improve dependability and fault handling, the system integrates a redundant dual-CPU PLC and incorporates a real-time operating system (RTOS) to optimize status and signal publishing processes. While preserving compatibility with the legacy system, the new design streamlines the architecture, improves diagnostic efficiency, and expedites deployment for future upgrades.