This control device comprises a communication unit, one or more functional units, and communication lines that connect the communication unit and the one or more functional units and are independent of each other. The communication unit is configured to execute a first task of sending out, with a first cycle, a first communication frame for executing transmission of data collected by the functional unit to the communication unit and/or transmission of data held by the communication unit to the functional unit via a first communication line among the communication lines, and a second task of sending out, with a second cycle different from the first cycle, a second communication frame for executing transmission of the data collected by the functional unit to the communication unit and/or transmission of the data held by the communication unit to the functional unit via a second communication line among the communication lines.