
B–63683EN/01
2. FUNCTION SPECIFICATIONS THAT DIFFER
FROM THE M series
41
This manual mainly describes the differences from the retrace function
supported by the M series, as well as some precautions. The basic retrace
operation is the same as that for the retrace function supported by the M
series. Refer to the operator’s manual and connection manual.
1. Operation in G08 advanced preview control mode
Backward movement and re–forward movement can also be
performed in advanced preview control mode. The operation is as
follows:
(1)When backward movement starts in advanced preview control
mode, advanced preview control mode is automatically canceled.
(2)Backward movement and re–forward movement are performed
with advanced preview control mode canceled.
(3)At the end of the block (N3) in which the backward movement
signal was turned on, single block stop is applied, then the
advanced preview control restart signal (RVSG08) is output.
(4)Subsequently starting machining continues machining from the
N4 block in advanced preview control mode.
(5)If backward movement was started after feed hold midway through
the execution of a block, advanced preview control mode is enabled
from the next block, not from the point at which forward feed is
started (point at which feed hold was applied).
Start
Advanced preview control on
(1) Turn on backward
movement signal
(1)
Turn off backward
movement signal
(2)
Advanced
preview
control off
(3) (4)
Advanced
preview
control on
N4
(Backward)(Backward)
(Re–forward) (Re–forward)
N2
(Forward)
N1
(Forward)
N3
(Forward)
(Forward)
2.13.1
Retrace