
OPERATION
4. AUTOMATIC OPERATION
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With the retrace function, the nozzle 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 nozzle in the forward direction again (forward return
movement) along the retraced path until the retrace start position is
reached. When the nozzle reaches the retrace start position, the nozzle
resumes movement according to the program.
This function is specific to a two–dimensional machine tool, and
therefore cannot be used with a three–dimensional function.
Procedure for Retrace Operation
To move the nozzle in the forward direction, turn off the REVERSE
switch on the operator’s panel, then press the cycle start switch. If the
REVERSE switch on the operator’s panel is on, the nozzle moves in the
reverse direction or completes reverse movement.
Three methods are available for moving the nozzle in the reverse direction
along the programmed path.
1) When the nozzle is moving in the forward direction, turn on the
REVERSE switch on the operator’s panel during block execution.
2) When the nozzle is moving in the forward direction, turn on the
REVERSE switch on the operator’s panel after a single block stop.
3) When the nozzle is moving in the forward direction, turn on the
REVERSE switch on the operator’s panel after a feed hold stop.
In the case of 1) above, the nozzle starts reverse movement after
completion of the block currently being executed (after execution up to
the position of a single block stop). Turning on the REVERSE switch on
the operator’s panel does not immediately start reverse movement.
REVERSE swtch rurned on
Cycle start
(forward movement started)
Reverse movement started
Forward movement
Reverse movement
In the case of 2) above, the nozzle starts reverse movement at the position
of a single block stop when the cycle start switch is pressed.
Single block stop
REVERSE switch
turned on cycle start
Forward movement
Reverse movement
Reverse movement started
Cycle start
(forward movement started)
4.10
RETRACE FUNCTION
Procedure
D Forward movement →
Reverse movement