2.8.
(3)
(4)
(5)
(6)
(7)
1 LIST OF G CODES (Cent’d)
G codes of * group in the Table 2.8.1 are
non–modal.
They should not be commanded
together with the other G codes in one
block .
The modal G codes can be commanded mixed-
ly in a block.
G codes in Class B are basic, and those in
Class O are options. The use of optional
G codes is determined by the machine tool
design.
See the machine tool builder’s
manual,
Standard G codes can be coverted to spe-
cialG codes I by parameters. This is a
basic feature, and, when parameter #6005D7
is set to 1, standard G codes are converted
to special G code 1.
When the sDecial G code IIowtion is incor-
.
porated in the control, the setting of param–
eter #6005D 7 to 1 will convert G codes to
special G codes D.
Setting the parameter
to O will reconvert the
G codes to the stand-
ard G codes.
2.8.2
POSITIONING (G 00, G 06)
2.8.2.1 Positioning (G 00)
(1) GOO X( U)... Z(W) . . . ;
This command moves a tool at rapid traverse
rate to the point (X, Z ) in the coordinate
system set by the G50 command or moves it
away by (U, W ) from the present point for
each axis independently.
(2) For the rapid traverse rate, as it depends
upon the machine,
refer to the machine tool
builder’s manual.
EXAMPLE
X-Axis:
12 m/min
Z-Axis:
6 m/min
z
(3)
(4)
(5)
(6)
a.
b,
Along the axes specified by GOO, the ma-
chine slide moves in rapid traverse rates ,
independently of each other. The resultant
tool locus may not be a straight line, and
when working out the program , care must
be taken to avoid fouling between the tool
and the workpiece .
GOO is
a modal G code in the 01 group
When it is commanded, it remains effective
until other G codes in the 01 group are
commanded.
For the positioning with G 00, the pulse dis-
tribution is started only after the ERROR
DETECT state is turned on, and the program
advances to the next block only upon the
activation of the ERROR DETECT state after
the completion of the pulse distribution.
When this G code is used, therefore, the
workpiece edges are machined true, and
rounding is avoided.
Notes :
The ERROR DETECT ON state means the
decrease of the servo lag pulses to the per-
missible level after the pulse distribution
for move command.
When T code is commanded, GOO should be
put in the T-code block. GOO is required
for designation of tool traverse rate for
tool offset motion using T code.
EXAMPLE
G50 X150. Z1OO. ;
GOO TO1O1 S1OOO M03 ; . . .
. . . GOO for designation of traverse
rate for tool offset motion
(GOO) X30. Z5. ; . . . GOO can be omitted
in positioning.
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