
4. REFERENCE POSITION ESTABLISHMENT
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The tool moves in the direction specified with ZMIx (bit 5 of
parameter No. 1006), at the feedrate specified with parameter No.
7184, at the torque specified with parameter No. 7186 (until the
tool strikes the mechanical stopper).
Mechanical
stopper
The direction, feedrate, and torque
are all specified with parameters.
(E)After the tool strikes the mechanical stopper end on the axis, the
tool is withdrawn in the direction opposite to the butting direction,
along the axis for a parameter–set distance.
The tool is moved in the direction opposite to that specified with
ZMIx (bit 5 of parameter No. 1006), at the feedrate specified with
parameter No. 7185, for the distance specified with parameter No.
7182.
Mechanical
stopper
The direction, feedrate, distance,
and torque are all specified with pa-
rameters.
Reference position
For parameter Nos. 7183 and 7184, set the feedrates at which the
tool is moved toward the mechanical stopper with a limited torque,
considering the machine accuracy.
After the tool strikes the mechanical stopper, and the tool is
withdrawn the distance specified with parameter No. 7182, the
withdrawal point is set as the reference position on the specified
axis. Then, the reference position return end signal and reference
position establishment signal are set to 1.
After reference position return has been completed, alarm PS000
is issued. Turn the power off then back on before continuing
operation.
When the reference position has already been set (when APZx, bit 4 of
parameter No. 1815, is 1), performing butt–type reference position setting
causes the tool to be positioned to the reference position at the rapid
traverse rate without the cycle operation. Upon the completion of
positioning, the reference position return end signal is set to 1.
The timing chart for the cycle operation is shown below.
After the reference
position is set