HEIDENHAIN CNC PILOT 640 User Manual page 460

4
You can also program the listed functions by soft key.
The soft-key row is available when the variable assignment
function is active and the on-screen alphabetic keyboard is
closed.
Programming notes:
The distinction between variables that can be modified
at runtime and those that cannot, as in predecessor
controls, does not apply any longer. The NC program
is no longer compiled before the program run, but at
runtime.
Program NC blocks containing variable calculations
with Slide code $.. if your lathe has more than one
slide. Otherwise, the calculations are repeated.
Positions and dimensions transferred into system
variables are always indicated in metric form. This also
applies when an NC program is run in inches.
460
DIN/ISO programming | Programming variables
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017