Abstract: An injection molding machine includes a mold clamping unit that clamps a mold unit, an injection unit that fills the mold unit clamped by the mold clamping unit with a molding material, and an ejector unit that takes out a molding product from the mold unit after the molding material with which the mold unit is filled by the injection unit is cooled and solidified, in which a communication cycle in which data is exchanged in at least one path of between two internal devices and between the injection molding machine and an external device is shorter than a control cycle in which predetermined control is performed using received data.