VIRTUAL NUMERIC CONTROL DEVICE ADAPTABLE TO ANY REAL NUMERIC CONTROL DEVICE

A numerical control apparatus is provided with an application including commands to be used therein and a virtual numerical control device independent of the specifications of a real numerical control device to be driven actually. Alternatively, the application including the commands to be used in the numerical control apparatus and virtual numerical control device independent of the specifications of the real numerical control device to be driven actually are executed. By doing this, differences between the commands and the respective specifications of the numerical control devices are eased by commands proper to the virtual numerical control device, so that the commands are made common. At the same time, commands independent of the hardware and software of the numerical control apparatus are formed for the apparatus.