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10 unit of measurement, Function, Unit of measurement (mm/inches) – HEIDENHAIN iTNC 530 (340 422) ISO programming User Manual

Page 495

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HEIDENHAIN iTNC 530

495

12.1

0

Unit o

f Measur

ement

12.10 Unit of Measurement

Function

This MOD function determines whether the coordinates are displayed
in millimeters (metric system) or inches.

n

To select the metric system (e.g. X = 15.789 mm) set the Change
mm/inches function to mm. The value is displayed to 3 decimal
places.

n

To select the inch system (e.g. X = 0.6216 inches) set the Change
mm/inches function to inches. The value is displayed to 4 decimal
places.

If you activate inch display, the TNC shows the feed rate in inch/min.
In an inch program you must enter the feed rate larger by a factor of
10.