Abstract: A numerical control system including an input unit, a control unit, a memory, a processing unit, a setting and display unit, and an output unit, the memory unit including a first ROM region for storing and edited program produced by editing a machining program entered through the input unit in the memory, and a second ROM region for storing a program for writing the edited program into the first ROM region under a writing command entered through the setting and display unit.

Abstract: A dual language numerical controller includes a terminal (8') for entering both a numerical control (NC) language program and a higher level language, such as BASIC, program, a language discriminator (31) for determining which language has been entered, a higher level language interpreter (32) and an NC language interpreter (33), both for producing NC instruction data and an NC data table formatter (34) for arranging the instruction data in the order of which the entered programs produced them.

Abstract: A numerical control system having a general purpose operating panel which is selectively detachable therefrom. The numerical control system includes a serial data transmitting and receiving section to which external signals are applied, an arithmetic section for performing numerical calculations on data received from the serial data transmitting and receiving section, a memory section for storing data received from the serial data transmitting and receiving section, results of claculations from the arithmetic section and programs, an output section for outputting results of calculations from the arithmetic section and the contents of the memory section as instruction signals to a machine tool, a control section for controlling the serial data transmitting and receiving section, the arithmetic section, the memory section and the output section, and a general purpose operating panel having a general purpose full keyboard and a general purpose display unit.

Abstract: The numerical controller is equipped with a setting display unit which comprises:a display unit consisting of an echo data display area, a data display area, and a numerically-controlled operation status display area;a total functional key group for selecting pictures that respond to desired functions;a switching key for changing the background color of echo data displayed on the echo data display area in the display unit; andan echo key group for setting or resetting effective echo data that are displayed on the echo data display area.

Abstract: A numerical control device for controlling a machine tool automatically selects the tool of the specified kind from among a plurality of tools of the same kind disposed in the magazine locations or holders. The numerical control device includes registers for storing the kinds and the lives of the tools disposed in respective magazine locations. Thus, when a tool select command specifying a tool kind is inputted, the magazine location in which the tool of the specified kind having a remaining life is selected by studying the contents of the registers in sequential order. The device further includes registers for storing adjustment values of the tools in the magazine locations, and thus can automatically effect the adjustment operation of the newly selected tool. Preferably, the device includes a tool damage detector and automatically changes the tool in use when it is damaged or reaches the end of its life in the middle of the machining operation.