AbstractThe large helical device (LHD) is a superconducting magnet system, created for the performance of plasma-fusion experiments, with an operation time of over a half-year for one cycle and long discharge being one of its main missions. We have developed a new monitoring system for data acquisition dedicated to the special characteristics of the LHD. Here, we describe the system's design and configuration, its current performance regarding real-time monitoring and future plans for the system's improvement.