
5. AUTOMATIC OPERATION
B–63833EN–1/02
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CAUTION
1 If rigid tapping is stopped as a result of an emergency stop,
the position on the tapping axis (Z–axis) is maintained but
the spindle position is lost. In such a case, therefore, the
positional relationship between the spindle and tapping axis
is not guaranteed when operation is resumed.
2 Rigid tapping retraction is performed based on the tapping
axis (Z–axis) commands accumulated for tapping. If rigid
tapping is stopped as a result of an emergency stop,
therefore, rigid tapping retraction may fail to draw the
tapping tool completely out of the workpiece. In such a
case, set retract value α (parameter No. 5382).
3 During rigid tapping retraction, switching the mode to
manual mode stops rigid tapping retraction.
4 For rigid tapping retraction, the CNC internally activates a
return program. Rigid tapping retraction may, therefore,
cause some G codes or M/F/S codes to be overwritten
(G80/G84/G74, G94/G95, G30).
NOTE
1 Setting rigid tapping retraction start signal RTNT to “1” starts
rigid tapping retraction only when the CNC is placed in both
the reset state and MDI mode.
2 The machining data for rigid tapping retraction is maintained
until a rigid tapping command is subsequently specified,
even while the power is turned off. Rigid tapping retraction
can, therefore, be specified even if the power has been
turned off after rigid tapping.
3 Rigid tapping retraction is not performed if the input
increments (inches or mm) selected when tapping return is
specified differ from those selected when the machining
data for tapping retraction was stored.
4 An override can be applied to rigid tapping retraction, if it is
enabled with the corresponding parameter.
Caution
Note