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(8)
Method of canceling offset
(a)
There are
two
types
which
can
be switched
by parameter.
Pm 4012 D6
=
0
:
Type A
Pm
4012 D6 = 1
:
Type B
(D Type
A
'
Does
not
move when move command is
not
provided in
G40 command block.
The offset mode
is canceled by the first
move
command given in a
block
specified following the G40 block. In principal, move
com¬
mand for the offset
plane
should be specified with G40 in the same
block.
<I>
Type B
:
Moves
even if move
command is
not
provided in
G40
command block.
G40 cancels tool radius
compensation
C and
performs positioning
at
the end
point as programmed.
In this
case,
the tool moves
to
the
normal line of the end point
of
the block immediately before G40.
(b)
Because G40 involves
move operation for
cancellation,
if it
is other
than GOO
or
G01. alarm
"181" results as in the case of G41
(G42).
(c)
Offset cancellation is divided into
two types
depending on
the
shape.
I
•
Cancellation of inside comer (180°
or
less)
G41
;
C01
X
F
G40
X
Y
145
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