cnc program structure

8/7/2019 CNC PROGRAM STRUCTURE

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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



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.



Short notation:Short notation:



Milling system formatMilling system format



Turning system formTurning system format:at:

y Similar to milling system format .

y Multiple word addresses«.



Symbols in programming:Symbols in programming:



Plus/minus sign:Plus/minus sign:



Program HeaderProgram Header

y Comments or messages can be placed

( providing within parentheses)

y A series of comments/ messages at the

program top

cnc program structure

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