
B–63523EN–1/03
1. AXIS CONTROL
276
D If a servo alarm or retract–axis overtravel alarm occurs during
retraction, the retraction is interrupted. If this occurs, the retract
completed signal does not go 1. An alarm other than the overtravel
alarm or servo alarm will not cause the retraction to be interrupted.
D Retraction cannot be interrupted by bringing the retract signal RTRCT
to 0 after retraction starts.
D While the retract completed signal RTRCTF is held to 1, the retract
signal RTRCT is not accepted.
D Performing retraction on the axis of the current movement under PMC
axis control does not cancel the move command for the PMC axis. To
perform retraction on the PMC axis of the current movement, set the
retract signal RTRCT to 1 and cancel the PMC axis control by means
of the PMC axis reset signal ECLRg.
D In the advanced preview control mode, neither the hobbing function
nor the retraction function can be used.
D The hobbing function and retraction function cannot be used for
high–speed cycle machining or binary operation.
D While the workpiece axis (C–axis) is under synchronous, composite,
or superimposed control, hobbing synchronization cannot be started.
If the prohibited action is attempted, alarm 187 will be raised.
D During hobbing synchronization, the workpiece axis (C–axis) cannot
be brought under synchronous, composite, or superimposed control.
If the prohibited action is attempted, alarm 225 will be raised.
D When the hobbing machine function (M series) is enabled, no canned
cycle for drilling can be used.
D For the hobbing machine function (T series), a canned cycle is
performed as follows:
(1)During hobbing synchronization, a canned cycle (G81 to G89)
cannot be specified. If the prohibited specification is attempted,
alarm 184 will be raised.
(2)In the canned cycle mode, the hobbing synchronization command
G81.4 cannot be specified. If the prohibited specification is
attempted, alarm 187 will be raised.
D The retract function works even while the thread cutting command is
effective. When the retract function is executed, the thread cutting
immediately stops, starting retraction.
D During hobbing synchronization, a thread cutting command (G32,
G34, G92, etc.) cannot be specified. If the prohibited specification is
attempted, alarm 184 will be raised.
D In the thread cutting mode, the hobbing synchronization command
G81.4 cannot be specified. If the prohibited specification is attempted,
alarm 187 will be raised.
D During helical synchronization (if G81.4P_ is specified), the
workpiece axis (C–axis) cannot cause jog feed on the two helical axes
(Z–axes) simultaneously.
D During helical synchronization (if G81.4P_ is specified), manual rapid
traverse cannot be performed on the workpiece axis (C–axis) and
helical axis (Z–axis). Jog feed is performed instead.
D Advanced preview
D Setting the workpiece
axis (C axis)
D Synchronous,
composite, and
superimposed control
D Canned cycle
D Thread cutting (T series)
D Manual operation