MOTION DATA COMMAND SYSTEM AND CONTROL SIGNAL DEFINITION SYSTEM FOR MOTION PROGRAM

A motion data command system for a motion program having a numerical controller for controlling a servo amplifier in accordance with a given motion command. A memory is provided in the numerical controller for storing as variables motion command data. A motion API called by an application program on a personal computer is provided which gives a motion command via a bus to the numerical controller; and indirectly specifying the address of a variable of motion command data present in the memory by way of said motion API.