HEIDENHAIN iTNC 530 (340 49x-03) smarT.NC Pilot - Manual (Page 119)

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Unit 50 Separate Tool Call
You can define a separate tool call with this unit.
Parameters in the overview form:
8 T: Tool number or name (switchable via soft key)
8 S: Spindle speed [rpm] or cutting speed [m/min or ipm]
8 DL: Delta length for tool T.
8 DR: Delta radius for tool T.
8 DR2: Delta radius 2 (corner radius) for tool T.
8 Define M function: If desired, enter any miscellaneous functions M.
8 Define pre-positioning: If desired, enter a position to be approached
after the tool change. Positioning sequence: First the machining plane
(X/Y), then tool axis (Z).
8 Tool preselect: If needed, this is the number of the next tool for faster
tool change (machine-dependent).