Numerical control unit file protection system

Details Numerical control unit file protection system Numerical control unit file protection system

1988-05-18

1989-11-28

MacDonald, Allen

Boots, shoes, and leggings

364200, 3642865, G05B 900

Patent

active

048842117

ABSTRACT:
There is provided a numerical control unit having a processor (102a), a control program memory (102b), a memory (102c) for storing files, and input means (102d) for accessing the files. The processor (102a), in accordance with the control program, processes externally entered control data to numerically control a machine connected thereto. The arrangement is such that the name of a file to be protected is stored in the memory (102c) of the numerical control unit and, the name of an object file is compared with the protected file name in the memory (102c), when a modification command and the name of the object file are entered from the input means (102d). Processing for modifying the file is executed, on the condition that there is a processing confirmation input from the input means (102d), when the object is a file protected file.

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