Title:
NUMERIC CONTROLLING SYSTEM
Document Type and Number:
Japanese Patent JPS57187709
Kind Code:
A
Abstract:
PURPOSE:To protect a program by storing a key word in a nonvolatile memory stored with the program, and displaying and correcting the program when the key wordf is inputted. CONSTITUTION:When a power source is turned on, a user macroprogram, a subprogram, and an NC command program for controlling a machine or a numeric controller are transferred from a bubble memory 101 to a semiconductor memory 102, and a registered key word is also transferred to a register 106. The registered key word is inputted to a register 107 to look at the user macroprogram, etc. A comparison part 108 compares the contents of the register 106 with those of the register 107 invariably and inputs the comparison result to a processor 103. Only when a coincidence signal is inputted, the processor permits a group of instructions of the user macroprogram, etc., to be inputted to a display unit 110.
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Inventors:
NOZAWA RIYOUICHIROU
KITANI NOBUYUKI
KITANI NOBUYUKI
Application Number:
JP7283181A
Publication Date:
November 18, 1982
Filing Date:
May 14, 1981
Export Citation:
Assignee:
FUJITSU FANUC LTD
International Classes:
G05B19/4093; G05B19/18; G05B19/402; G05B19/406; G05B19/409; G06F21/12; (IPC1-7): G05B19/403