A working system includes at least one movable apparatus movable and at least one stationary apparatus. The movable apparatus includes a working unit performing a predetermined work. The stationary apparatus includes a control unit performing drive control of the working unit. A control method of the system includes: instructing, when the movable apparatus has reached a working position, the control unit of the stationary apparatus to establish communication with the working unit of the movable apparatus; updating status information indicating a communication establishment status, after the communication instruction; instructing the control unit to transmit an operation signal to the working unit in the working position; instructing the control unit to disconnect the communication, after the signal transmission instruction step; and updating the status information after the disconnection instruction.