
OPERATION
B–63664EN/02
4. AUTOMATIC OPERATION
519
If the beam moves in the reverse direction after a feed hold stop, the beam
stops forward return movement at the position of the feed hold stop, then
resumes forward movement. If the beam moves in the reverse direction
after a single block stop, the nozzle also stops forward return movement
at the position of the single block stop.
Cycle start
(forward movement started)
Feed hold stop
Reverse movement
signal=1,cycle start
Reverse movement
started
Forward return movement started
Forward movement started
Forward movement
Reverse movement
Forward return
movement
In automatic operation, a program is usually executed in the order that
commands are specified. This mode of execution is referred to as forward
movement. The retrace function can execute in reverse, program blocks
that have already been executed. This mode of execution is referred to as
reverse movement. In reverse movement, the nozzle can retrace the
nozzle path followed by forward movement.
A program can be executed in the reverse direction only for those blocks
that have already been executed in the forward direction.
Approximately 40 to 80 blocks can be executed in the reverse direction,
depending on the program.
During reverse movement, the REVERSE MOVEMENT LED is on and
RVRS blinks in the lower–right corner of the screen to indicate that the
nozzle is undergoing reverse movement.
The nozzle can perform reverse movement one block at a time when the
single block mode is set.
The nozzle can be moved again along the retraced path of the blocks in
the forward direction up to the block where reverse movement was
started. This movement is referred to as forward return movement. In
forward return movement, the beam moves along the same path as
forward movement up to the position where reverse movement started.
When the beam returns to the block where reverse movement was started,
the nozzle resumes forward movement according to the program.
In forward return movement, the REVERSE MOVEMENT LED is off
and RTRY (Re–TRY) blinks in the lower–right corner of the screen to
indicate that the nozzle is undergoing forward return movement. When
the beam switches from forward return movement to forward movement,
RTRY (Re–TRY) disappears from the lower–right corner of the screen.
The nozzle can perform forward return movement one block at a time
when the single block mode is set.
Explanations
D Forward movement and
reverse movement
D Forward return
movement