HEIDENHAIN TNC 620 User Manual page 136

4
Parameter Meaning
Limit the spindle speed for this tool. The programmed
NMAX
value is monitored (error message) as well as an increase
in the shaft speed via the potentiometer. Function inactive:
Enter –.
Input range: 0 to +999 999; if function not active: enter –
Definition of whether the control should retract the tool in
LIFTOFF
the direction of the positive tool axis at an NC stop in order
to avoid leaving dwell marks on the contour. If Y is defined,
the control retracts the tool from the contour, provided
M148 has been activated.
Further information: "Lifting off the tool automatically from
the contour at NC stop: M148", Page 310
Reference to the number of the touch probe in the touch-
TP_NO
probe table
Point angle of the tool. Is used by Cycle 240 in order to
T-ANGLE
calculate the centering depth from the diameter input
Thread pitch of the tool. Is used by Cycles 206, 207, and
PITCH
208. A positive algebraic sign means a right-hand thread.
Time of last tool presence in the spindle
LAST_USE
Tool type for evaluation in the pocket table
PTYP
Refer to your machine manual. Function is defined by the
machine manufacturer!
Activate or deactivate active chatter control for the respec-
ACC
tive tool (Page 312).
Input range: N (inactive) and Y (active)
Use the SELECT soft key to show the tool carrier kinemat-
KINEMATIC
ics. In the tool management, use the SELECT soft key and
the OK soft key to adopt the file name and the path
Further information: "Assigning a tool carrier", Page 164
Time for exceeding the tool life in minutes
OVRTIME
Further information: "Overtime for tool life", Page 145
Refer to your machine manual. Function is defined by the
machine tool builder!
Front-face cutting width of the tool (e.g., for indexable
RCUTS
inserts)
Entering a value here influences helical and reciprocating
plunging in Cycles 251, 252, and OCM.
Further information: User's Manual for Programming of
Machining Cycles
Usable length of the tool for drilling cycles and Cycles 25x
LU
By entering a value here, you can limit the plunging depth in
the cycles.
If used in conjunction with RN, then LU may also be greater
than LCUTS.
Neck radius for the exact definition of the tool for graphic
RN
simulation (e.g., neck of end mills or side milling cutters)
A neck radius RN that is shown in the graphic simulation is
possible only if LU > LCUTS.
136
HEIDENHAIN | TNC 620 | User's Manual for Setup, Testing and Running NC Programs | 01/2022
Tools | Tool data
Dialog
Maximum speed [rpm]
Retract allowed? Yes=ENT/
No=NOENT
Number of the touch probe
Point angle
Tool thread pitch?
Date/time of last tool call
Tool type for pocket table?
ACC active? Yes=ENT/No=NOENT
Tool-carrier kinematics
Tool life expired
Width of the indexable insert
Usable length of the tool?
Neck radius of the tool?