
B–63002EN/01
24. AUTOMATIC OPERATION
NC FUNCTION
277
While a tape is running, a program input from an I/O device connected
to the reader/punch interface can be executed and stored in memory.
Similarly, a program stored in memory can be executed and output
through the reader/punch interface at the same time.
With the retrace function, the tool can be moved in the reverse direction
(reverse movement) by using the REVERSE switch during automatic
operation to trace the programmed path. The retrace function also enables
the user to move the tool in the forward direction again (forward return
movement) along the retraced path until the retrace start position is
reached. When the tool reaches the retrace start position, the tool resumes
movement according to the program.
When rigid tapping is stopped, either by an emergency stop or by a reset,
the tap may cut into the workpiece. The tap can subsequently be drawn
out by using a PMC signal. This function automatically stores
information relating to the tapping executed most recently. When a tap
return signal is input, only the rigid tapping cycle return operation is
executed, based on the stored information. The tap is pulled toward the
R point. When a return value is set in a corresponding parameter, the
pulling distance can be increased by .
L L
α
α
Initial point
2nd return
completion
point
1st return
completion
point
R point
Return
completion
point
Center of
tapping
Z point (α = 0) (when α is set)
24.9
SIMULTANEOUS
INPUT AND OUTPUT
OPERATIONS
(AT 1–PATH CONTROL)
(M series)
M series
24.10
RETRACE FUNCTION
(M series)
M series
24.11
RIGID TAPPING
RETURN (M series)
M series