HEIDENHAIN TNC 407 (280 580) ISO Programming - Manual (Page 262)

8-42
8 Cycles
TNC 426/TNC 425/TNC 415 B/TNC 407
Fig. 8.44: Examples of coordinate transformations
8.5 Coordinate Transformations
Once a contour has been programmed, it can be
positioned on the workpiece at various locations
and in different sizes through the use of coordinate
transformations. The following cycles are available
for this:
• DATUM SHIFT (G53/G54)
• MIRROR IMAGE (G28)
• ROTATION (G73)
• SCALING (G72)
The original contour must be marked in the part
program as a subprogram or a program section.
Duration of effect
A coordinate transformation becomes effective as
soon as it is defined, and remains in effect until it is
changed or cancelled.
Cancellation
Coordinate transformations can be cancelled in the
following ways:
• Define cycles for basic behavior with a new
value (such as scaling factor 1)
• Execute a miscellaneous function M02 or M30,
or an N99999 %... block (depending on machine
parameters)
• Select a new program