
6.SAFETY FUNCTIONS OPERATION B-63944EN/02
- 988 -
When setting the area by parameters, points A and B in the figure
below must be set.
X1>X2, Y1>Y2, Z1>Z2
(X1, Y1, Z1)
B(X2, Y2, Z2)
Fig. 6.3 (c) Creating or changing the forbidden area using a parameters
The values X1, Y1, Z1, X2, Y2, and Z2, which are set by parameters
No. 1322 and No. 1323, must be specified by the distance from the
machine coordinate system (machine unit). The values X, Y, Z, I, J,
and K, which are set by a G22 command, must be specified by the
distance in the least input increment (input unit).
Values set by a program are then converted in the machine increment
and the values are set as the parameters.
- Stored stroke check 3
Set the boundary with parameters No. 1324 and 1325. The area
inside the boundary becomes the forbidden area. The values X1, Y1,
Z1, X2, Y2, and Z2 must be set as coordinates (machine unit) in the
machine coordinate system.
CAUTION
1 If the two points for specifying a forbidden area are
identical, all areas are handled as movable areas
for stored stroke check 2/3.
2 Even if the two points for specifying a forbidden
area are erroneously set, the rectangular
parallelepiped having the points as vertices is
assumed as a boundary.
3 Since an axis without the reference position return
function has no forbidden areas, there are no
alarms about forbidden areas for the axis.
- Checkpoints in the forbidden area
The parameter setting or programmed value (XYZIJK) depends on
which part of the tool or tool holder is checked for entering the
forbidden area.
If point A (the top of the tool) is checked in Fig. 6.3(d), the distance
"a" should be set as the data for the stored stroke limit function. If
point B (the tool chuck) is checked, the distance "b" must be set.
When checking the tool tip (like point A), and if the tool length varies
for each tool, setting the forbidden area for the longest tool requires no
re-setting and results in safe operation.