HEIDENHAIN iTNC 530 (60642x-04) ISO programming - Manual (Page 101)

HEIDENHAIN iTNC 530 101
3.2
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3.2 Creating and writing programs
Organization of an NC program in DIN/ISO
format
A part program consists of a series of program blocks. The figure at
right illustrates the elements of a block.
The TNC numbers the blocks of a part program automatically
depending on MP7220. MP7220 defines the block number increment.
The first block of a program is identified by %, the program name and
the active unit of measure.
The subsequent blocks contain information on:
 The workpiece blank
 Tool calls
 Approaching a safe position
 Feed rates and spindle speeds, as well as
 Path contours, cycles and other functions
The last block of a program is identified by N99999999 the program
name and the active unit of measure.
N10 G00 G40 X+10 Y+5 F100 M3
Block number
Path function Words
Block
Danger of collision!
After each tool call, HEIDENHAIN recommends always
traversing to a safe position from which the TNC can
position the tool for machining without causing a collision!