HEIDENHAIN TNC 640 (34059x-05) ISO programming - Manual (Page 586)

MOD functions
18.6 Setting the unit of measure
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TNC 640 | User's ManualDIN/ISO Programming | 1/2015
18.6 Setting the unit of measure
Application
This MOD function determines whether the coordinates are
displayed in millimeters (metric system) or inches.
Metric system: e.g. X = 15.789 (mm), the value is displayed to 3
decimal places
Inch system: e.g. X = 0.6216 (inches), value is displayed to 4
decimal places
If you would like to activate the 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.
18.7 Displaying operating times
Application
The MACHINE TIME MOD function enables you to see various
types of operating times:
Operating time Meaning
Control on Operating time of the control since being
put into service
Machine on Operating time of the machine tool since
being put into service
Program run Duration of controlled operation since
being put into service
The machine tool builder can provide further
operating time displays. Refer to your machine
manual.