Symbol definition system and method a programmable machine controller
AssigneeFanuc Corporation
InventorsKunio Tanaka, Yasushi Onishi
Life of this patent
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Abstract
A symbol definition system for a programmable machine controller (PMC) for defining symbols (signal names) in a sequence program of the PMC. Since the function of the signals between the PMC and a numerical control apparatus is fixed, a first group of symbols is supplied to a program creation unit as system data, and therefore, when a sequence program is created, the first group of symbols need not be defined. Further, the first group of symbols is transferred to the PMC together with the sequence program and used for editing and maintenance.
Claims10
A symbol definition method for defining symbols in a sequence program of a programmable machine controller, said symbol definition method comprising the steps of:
- supplying a first group of symbols, for respective first interface signals between a numerical control apparatus and said programmable machine controller, to a program creation unit as system data;
- defining, in said program creation unit, a second group of symbols for respective second interface signals between said programmable machine controller and a machine tool and respective information signals used in said programmable machine controller;
- creating said sequence program, having selected ones of said first group of symbols and selected ones of said second group of symbols, in said program creation unit;
- and
- transferring symbols of said first group of symbols and said second group of symbols, together with said sequence program, from said program creation unit to said programmable machine controller.
A symbol definition device used with a numerical control apparatus and a machine tool, for defining symbols indicating signal names in a sequence program, said symbol definition device comprising:
- a programmable machine controller controlling various operations of the machine tool;
- and
- a program creation unit connected to said programmable machine controller, storing a first group of said symbols related to respective first interface signals between said numerical control apparatus and said programmable machine controller, said program creation unit storing a second group of said symbols related to respective second interface signals between said programmable machine controller and said machine tool, and respective data signals used within said programmable machine controller, defining only said second group of said symbols, generating said sequence program comprising selected ones of said first and second groups of said symbols and transferring said sequence program, said second group of said symbols, and only said selected ones of said first group of said symbols to said programmable machine controller.
A symbol definition method for defining symbols in a sequence program of a programmable machine controller, said symbol definition method comprising the steps of:
- supplying a first group of symbols, for respective first interface signals between a numerical control apparatus and said programmable machine controller, to a program creation unit as system reservation symbols;
- defining, in said program creation unit, a second group of symbols for respective second interface signals between said programmable machine controller and a machine tool, and respective information signals used in said programmable machine controller;
- creating said sequence program, comprising selected ones of said first group of symbols and selected ones of a second group of symbols, in said program creation unit;
- and
- transferring only said selected ones of said first group of symbols, said second group of symbols and said sequence program from said program creation unit to said programmable machine controller.
Dependencies are inferred from the claim text.