
5. TOOL FUNCTION (T FUNCTION)
B–63683EN/01
84
An example of a time chart for above description is shown below.
0
1
Motion of servo motor
TFIN
Road of T command
T code signal
TF
Next action
MVT
INPT
*ITT
SVFT
Mechanical clamp
using shot pins or
the like
Motion corresponding
to T code signal
Axial motion
FIN
Release
TMF
Fig. 5.3 (a)
If a feed axis & direction select signal + T of the turret axis is turned to
1 with jog feed selected, the turret axis moves in the + direction, and if
– T is turned to 1, the turret axis moves in the –direction to select a tool,
respectively.
In other words, when the feed axis & direction select signal is turned to
0, the turret axis moves to select the nearest tool in the
decelerable/stoppable direction, and then stops. However, this motion is
performed only after completion of manual reference position return of
the turret axis after power on. In the period after the power is turned on
or after the servo ready signal is set to 0 in case of emergency stop and
before manual reference position return of the turret axis is completed and
the machine position is determined, setting the feed axis direction select
signal to 0 decelerates the turret axis movement and stops it immediately.
It is requested, as described above, to move the turret axis after confirming
that the turret has been released from being mechanically clamped with
shot pins or the like in the jog feed mode as well as in the T–code
command mode, if the turret is mechanically clamped by using shot pins,
etc.