HEIDENHAIN iTNC 530 (340 49x-05) Pilot - Manual (Page 134)

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Definin
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Machining Operations
Unit 11 Scaling (FCL 2 function)
With unit 11 you define a scaling factor with which you can run the
subsequently defined operations with enlarged or reduced dimensions.
With machine parameter MP7411 you specify whether the
scaling factor is to be effective only in the active working
plane or also in the tool axis.
Reset scaling factor: Define unit 11 with scaling factor 1.