HEIDENHAIN TNC 620 User Manual page 169

Setup | Switching on/off
Crossing the reference point in a tilted working plane
If the Tilt working plane (option 8) function was active before the
control was shut down, then the control will automatically reactivate
this function after restarting. This means that movements via the
axis keys take place in the tilted working plane.
Before traversing the reference points, you must deactivate the Tilt
the working plane function; otherwise, the control will interrupt the
process with a warning. You can also home axes not activated in
the current kinematic model without needing to deactivate Tilt the
working plane, such as a tool magazine.
Further information: "Activating manual tilting", Page 242
Danger of collision!
The control does not automatically check whether collisions
can occur between the tool and the workpiece. Incorrect pre-
positioning or insufficient spacing between components can lead
to a risk of collision when referencing the axes.
Pay attention to the information on the screen
If necessary, move to a safe position before referencing the
axes
Watch out for possible collisions
If the machine does not have any absolute encoders,
the position of the rotary axes must be confirmed. The
position shown in the pop-up window is the last position
before the control was shut down.
HEIDENHAIN | TNC 620 | User's Manual for Setup, Testing and Running NC Programs | 01/2022
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