NUMERICAL CONTROLLER, SCREEN DISPLAY OF NUMERICAL CONTROLLER AND DATA INPUT/OUTPUT METHOD

摘要

A function which emulates the display circuit of a numerical controller (CNC) is given to a personal computer (2) incorporated in the CNC. The personal computer (2) converts a display command A which is obtained by the emulation of the display circuit of the CNC into a video signal (B2) and transmits the signal to a display means (4). The CNC does not need to have display circuits on both the CNC main part side and the personal computer (2) side and, further, does not need to have a switching circuit which switches the video signals transmitted from both the display circuits to supply one of them to the display means (4). Further, a function which emulates the data I/O circuit of the CNC is given to the personal computer (2). The personal computer (2) outputs/receives data which are fed from or sent to the CNC to/from an external I/O apparatus (26) through an I/O data RAM (25C) from/at the data I/O circuit (23) of the personal computer (2). Therefore, it is not necessary to provide data I/O circuits on both the CNC main part side and the personal computer side.