This numerical control system comprises: a numerical control device 5 that generates a high-level command signal including a robot command signal for a robot 3 according to a numerical control program; and a robot control device 6 that generates a robot control signal for controlling the operation of the robot 3 on the basis of the high-level command signal and inputs the robot control signal to the robot 3. The robot control device 6 includes a control unit 60 that generates the robot control signal by selectively executing one among a dynamic executable file generated on the basis of a dynamic executable file creation command signal and the robot command signal and a static executable file selected on the basis of a static executable file start command signal.