This interface system comprises a processing program computer (11) for inputting default values in advance as parameters pertaining to an industrial machine (21) and creating a program that describes the movement of the industrial machine (21), the industrial machine (21) for moving a tool according to the program to process a workpiece into a predetermined shape, a detection means (40) for automatically detecting correction values of the parameters pertaining to the industrial machine (21) in the processing program on the basis of the actual condition of the industrial machine (21), and an interface part (50) for delivering to the computer (11) corrective information detected by the detection means (40) in a format that can be understood by the computer (11) ; therefore, parameters that reflect the actual condition of the industrial machine can be inputted into the program.