A control device includes: a first controller that includes a first memory configured to store data on control of plural devices connected to the first controller, and a recognizing unit configured to recognize the first memory as plural blocks each of which contains data of at least one of the plural devices; and a second controller that includes a processing unit configured to perform processing for controlling the plural devices, a requesting unit configured to designate a block for the first controller and request the first controller to read data, and a second memory configured to store the data of the block, the data being received from the first controller.