2.8.18 STORED STROKE LIMIT (G 36-G 39)+
This function is for preventing the entry of the
tool into the prohibited area, in both automatic
operation mode and manual operation mode, to
secure safer operation.
Three types of pro–
hibited areas can be set up as shown below.
-x
I
1 ST PROHIBITED AREA
(BY PARAMETER)
OLTSIDE PROHIBITION
2ND PROHIBITED AREA,
(BY G36)
I /
.4
/
c1
c
INSIDE OR
OUTSIDE
PROHIBITION
E
I)
P
INSIDE OR OUT-
SIDE PROHIBITION
~
4+---‘z
3RD PROHIBITED
AREA (BY G 38)
(1)
a.
b.
c.
(2)
a.
b.
c.
Fig. 2.25
Setting 1st prohibited area
Set + side boundary A and - side boundary
B by parameter.
The area outside the range between points
B is prohibited.
This area can not be specified by part
programs.
Setting 2nd prohibited area
Set + side boundary C and - side boundary
D by the setting function.
Selectively designate the inside or the out-
side of the area between points C and E by
parameter #6007D0.
=
In addition to the method by the setting
function, the following instruction can be
used to set a prohibited area, and to turn
on the area check function also.
(3)
a.
b.
c.
G36 U.. . W.. 1.. . K.. . ;
z=
coordinate coordinate
The area check function is turned off by a
single code block G37 ; .
Setting 3rd prohibited area
Set up + side boundary point E and - side
boundary point F by the setting function.
Selectively designate the inside or the out-
side of the area between points E and F by
parameter #6007D 1.
=
In addition to the method by the s’etting
function, the following instruction can be
used to set a prohibited area, and to turn
on the area check function also.
G38 U.. . W.. 1.. . K.. . ;
Y--r-
Point E
Point F
coordinate coordinate
The area check function is turned off by a
single code block G39 ; .
A
Table 2.19 Parameters and Settings for
Setting Prohibited Area
\
X axis
Z axis
Division
Ist
Point A z 66m
z 66m
—
Prohibited
Area
Point B
Parameter
~%06
8 &137
(4)
Coordinate system for area setting
The above Points A through G are all set in
absolute values on the machine coordinate
system (MACHINE) .
That is, the position
is written as the distance from the ( lst)
reference point ( 1 = least output (move) in-
crement) .
Therefore, this function will not
become effective unless the manual or auto-
matic RETURN TO REFERENCE ZERO is ex–
ecuted once after the energization of the
control.
44
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