HEIDENHAIN iTNC 530 Service Manual page 322

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Use the END soft key to exit the page.
Read the following informational text carefully and press ENT or NO ENT.
Note
The last position of the rotary axes before power-off is stored in non-volatile memory for
incremental encoders. These non-volatilely stored axis values are shown in a pop-up window
when 3D ROT / TOOL AXIS is called before referencing, and must be acknowledged by the
machine operator with ENT (confirmation of the values) or NO ENT (values deviate,
reference run must be performed first).
Starting with NC software version 340 49x-04, handwheel superimposed traverse in the
active tool axis system (Virtual Tool Axis VT) is now also possible when the TCPM is active.
--> Ask the machine operator or the machine manufacturer.
DANGER
The machine axes must not have been moved after the error with control reset has occured!
DANGER
It depends on the tool used (e.g., tap) whether a retraction is possible.
If you have acknowledged the position values of the axes, you can retract the tool axis (e.g.,
Z axis) in a tilted system.
Please proceed carefully!
HEIDENHAIN Service Manual iTNC 530