Provided is a method of reliably operating a highly integratable nonvolatile memory device. The control apparatus includes a torque correction circuit that generate a torque correction command from a current phase of current correction commands on a d-axis and a q-axis and a torque command and supplies the torque correction command to a dq-axis current command generator instead of the torque command. The service may then send, and the requestor may receive, a response message via unicast.