FRnet is an innovative industrial field bus offering high-speed deterministic I/O control, real I/O synchronization capabilities, non-protocol communication, and easy programming. Since windows is a multi-tasking system, it is very difficult to implement a real-time control system, especially when most of the CPU power is consumed by image and motion cards, and the remainder is not sufficient to handle I/O control. An FRnet control board combined with FRnet I/O modules can help solve the problems faced by system designers.