A CPU box of each mounting machine module obtains MAC addresses of communication devices of both an internal device and a base by communicating with the communication devices of both the internal device and the base after the power is turned on, compares the obtained MAC address of the internal device side and the obtained MAC address of the base side, with storage data of the MAC addresses of both the internal device side and the base side read from a non-volatile storage medium of the CPU box, obtains management data of the mounting machine module stored in association with the MAC address of the internal device side from the non-volatile storage medium of a management computer in a case where the MAC address of the internal device side does not match the storage data, and obtains the management data of the mounting machine module stored in association with the MAC address of the base side from the non-volatile storage medium of the management computer in a case where the MAC address of the base side does not match the storage data.