Numerical controller and device included in industrial machine

A numerical controller which is connected to a plurality of devices included in an industrial machine so as to be able to communicate therewith and which controls the plurality of devices, the numerical controller comprising:

• a program management memory which stores a control program that is written into the devices and is executable, and version number information of the control program while associating the version number information with the control program;
• a device management memory which stores the version number information of the control program written into each device while associating the version number information with device identification information that identifies each device;
• a hardware processor configured to execute a program and cause the numerical controller to operate as:
• a program writing unit which writes the control program stored in the program management memory into a memory of a predetermined device among the plurality of the devices;
• a data acquisition unit which acquires from each of the devices the control program and the version number information of the control program that are already stored in each of the devices;
• a storage control unit which stores the control program and the version number information of the control program acquired by the data acquisition unit in the program management memory, and stores the version number information of the control program acquired by the data acquisition unit in the device management memory while associating the version number information with the device identification information;
• a comparison unit which compares the version number information of the control program acquired by the data acquisition unit with the version number information of the control program previously stored in the program management memory;
• and
• a display control unit which controls a display to display the version number information of the control program acquired by the data acquisition unit along with the version number information of the control program previously stored in the program management memory based on the comparison result;
• a reception unit which receives, through a user interface, a selection of the control program to be written based on the display of the display,
• wherein the program writing unit writes the control program corresponding to the selection received in the reception unit into the memory of the predetermined device.