HEIDENHAIN TNC 640 User Manual page 856

20
20.7 Setting the unit of measure
Application
With this MOD function, you can determine whether the control
coordinates are displayed in millimeters 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 control shows the
feed rate in inch/min. In an inch program you must enter the feed
rate larger by a factor of 10.
20.8 Displaying operating times
Application
The MACHINE TIME MOD function enables you to see various
types of operating times:
Operating time
Control on
Machine on
Program run
Refer to your machine manual.
The machine tool builder can provide further operating
time displays.
856
Meaning
Operating time of the control since being
put into service
Operating time of the machine tool since
being put into service
Duration of controlled operation since
being put into service
MOD Functions | Setting the unit of measure
HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017