HEIDENHAIN TNC 426 (280 476) Pilot - Manual (Page 37)

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Working with Cycles
Graphic Support During Cycle Programming
As you create a program, the TNC provides you with graphic illustra-
tions of the input parameters.
Calling a Cycle
The following cycles are effective as soon as they are defined:
• Cycles for coordinate transformations
• DWELL TIME cycle
• The SL cycles CONTOUR GEOMETRY and CONTOUR DATA
• Point patterns
• TOLERANCE cycle
All other cycles go into effect when they are called through
• CYCL CALL: effective for one block
• CYCL CALL PAT: used non-modally in connection with point tables
• M99: effective for one block
• M89: effective until canceled (depends on machine parameter
settings)