PLTW Notes G and M Coding - G M Coding ● Operate CNC machines ● Began in the form of punch tape ● Developed in the 1970’s ● Translates human

PLTW Notes G and M Coding - G M Coding ● Operate CNC...

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G & M Coding Operate CNC machines Began in the form of punch tape Developed in the 1970’s Translates human language to machine language Typed into computer or generated by a program Sample program block N1 M06 T1; change to tool #1 N1 → Block sequence # M06 → Miscellaneous code: tool change T1 → Tool number ; → Comment separator Change to tool #1 → Comment N02 M03 S1500 N02 → line number M03 → turn spindle on S1500 → Spindle speed N03 G90 G01 X.5 Y.5 Z0 F1 N03 → Line number G90 → Prep code: Absolute (dealing with x, y, z axis) G01 → Prep code: SL Interpol (cutting movement) X.5 → X Coordinate Y.5 → Y Coordinate Z0 → Z Coordinate F1 → Feed rate (in/m) Address Character -: a letter used in g and m code programming to designate a class of function Parameter - attribute of a feature, such as a dimension that could be modified
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