A production system includes a control device that controls one or more industrial devices, and a host control device that communicably connects to the control device and controls the control device. The host control device includes a register memory allocated for control of the control device and including a command area, and transmission circuitry that transmits multiple command data sets stored in the command area of the control device to the control device, and the control device includes a communication memory in which the multiple command data sets received from the host control device are stored, and processing circuitry that executes a process instructed by the host control device based on the multiple command data sets stored in the communication memory.