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Alpha numerical program input
Word address programming CNC Mill Alpha numerical program input
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Basic Programing Terms
a. Character Digit Letter Symbols b. Word c. Block d. Program Format Combination of digit, letter, symbol is called: Alpha – Numerical Program Input Word address programming
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A. Program Number ( O _ _ _ _)
1. range from O through O9999 2. Letter O plus a four digit number 3. The only time letter o is used in program
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Sequence Number B. Sequence Number (N_ _ _ _ )
indicates the sequence number of the block 1. Range from N0001 through N9999 2. Letter N plus a four digit number
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C. Spindle Speed (S _ _ _ _ )
1. Range from S150 through S6000) 2. Letter S plus a three or four digit number)
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2. Letter F plus a number and a decimal point
D. Feed rate (F _ _ _. _ _ ) Designates the relative speed of the cutting tool with respect to the work 1. Range from F .04 through F 2. Letter F plus a number and a decimal point 3. programming in inches per minute (ipm)
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Tool Function E. Tool Number (T _ _ ) 1. range from T1 through T 20
Designates the number of the tools to be used 1. range from T1 through T 20 2. Letter T plus a number
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Input Function F. H Codes ( H _ _ ) 1. range from H 1 through H20
2. letter H plus a number 3. H codes are tool offset registers and must correspond precisely to tool numbers, i.e., T1 &H1, T2 & H2,
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Input Function G. D Codes ( D _ _ ) 1. range from D 1 through D20
2. letter D plus a number 3. D codes are tool diameter offset registers and must correspond precisely to tool numbers, i.e., T1 &H1, D1
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H. X Dimension (X _ _ _ . _ _ _ _)
1. letter X plus a number and a decimal point in all instances expect when X = 0 2. leading and trailing zeroes can be omitted in all dimensioning addresses I. Y Dimension (Y_ _ _ . _ _ _ _) J. Z Dimension ( _ _ . _ _ _ )
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G codes , M codes G code: Preparatory Function are used to set the control for various machine movement such as: Linear interpolation G01 Rapid travers G00 Circular interpolation G02, G03 M code: Miscellaneous function direct the controller to execute the function indicated such : End of program M02, M30 Tool Change M06 Turn the coolant off M09
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Address: G00 X-.375 S 800 F 8 M06 T 2 D05
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N0020 G90 G00 X-2.5 Y 3.75 S1000 ; Words: N0020 G90 G00 X-2.5 Y 3.75
Block N G90 G00 X-2.5 Y S ;
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Part Programming A part program is simply a series of command blocks that execute motions and machine functions to manufacture a part
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