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8/7/2019 CNC PROGRAM STRUCTURE
http://slidepdf.com/reader/full/cnc-program-structure 1/14
CNC PROGRAM STRUCTURECNC PROGRAM STRUCTURE
� FORMAT NOTATION:
A. Word ² only be written in a specific way
B. no. of digits, maximum no of decimal
places ² set by manufacturer
C. only letters with assigned meaning can be
programmedD. symbols used in some words, & its
position fixed
8/7/2019 CNC PROGRAM STRUCTURE
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SHORT FORM:SHORT FORM:
y Full format description-too long
y Absence of decimal point, symbol(+/-) ²
self implied.
y Differs among manufacturer- no standard
y Following are based on FANUC Control
system.
8/7/2019 CNC PROGRAM STRUCTURE
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Short notation:Short notation:
8/7/2019 CNC PROGRAM STRUCTURE
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Milling system formatMilling system format
8/7/2019 CNC PROGRAM STRUCTURE
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Turning system formTurning system format:at:
y Similar to milling system format .
y Multiple word addresses«.
8/7/2019 CNC PROGRAM STRUCTURE
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Symbols in programming:Symbols in programming:
8/7/2019 CNC PROGRAM STRUCTURE
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Plus/minus sign:Plus/minus sign:
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Program HeaderProgram Header
y Comments or messages can be placed
( providing within parentheses)
y A series of comments/ messages at the
program top