HEIDENHAIN POSITIP 880 User Manual page 86

TOOL LENGTH
If a tool presetter is used to measure the length of a
tool, enter the tool length (25 mm) and press ENT.
It is also possible to have POSITIP 880 determine an
offset. This method involves touching the tip of each
tool to a common reference surface. This allows
POSITIP 880 to determine the difference between
the length of each tool.
Move the tool until its tip is touching the reference
surface.
Press the TEACH OFFSET soft key. POSITIP 880 will
calculate an offset relative to this surface. Press ENT.
Repeat the procedure for each additional tool using
the same reference surface.
Only the tools set using the same reference surface may
be changed without having to set the datum.
If the tool table already contains tools in which the length
has been set, the reference surface should first be
established using one of them. If not, you will not be able
to switch between the new tools and the existing tools
without having to re-establish the datum. Before adding
the new tools, select one of the tools from the tool table.
Touch the tool to the reference surface and set the datum
to 0.
Cursor will automatically move to the UNIT field.
TOOL UNIT
Enter the tool unit (inch/mm) and
press ENT.
Cursor will automatically move to the TYPE field.
86
Fig. I.63 TOOL TYPE field
I Operating Instructions