HEIDENHAIN TNC 320 User Manual page 265

Combining coordinate transformation cycles
When combining coordinate transformation cycles, always make sure
the working plane is swiveled around the active datum. You can
program a datum shift before activating Cycle 19. In this case, you are
shifting the machine-based coordinate system.
If you program a datum shift after having activated Cycle 19, you are
shifting the tilted coordinate system.
Important: When resetting the cycles, use the reverse sequence used
for defining them:
1st: Activate the datum shift
2nd: Activate tilting function
3rd: Activate rotation
...
Machining
...
1st: Reset the rotation
2nd: Reset the tilting function
3rd: Reset the datum shift
HEIDENHAIN TNC 320 265