
20.AXIS CONTROL FUNCTIONS PROGRAMMING B-63944EN/02
- 606 -
30°
P1
P0(0,0)
P2
200
115.470
+Y (Angular axis) +Y' (Hypothetical axis)
+X (Perpendicular
axis)
- Three-dimensional coordinate conversion
In the three-dimensional coordinate conversion mode, angular
coordinate system conversion is applied to the workpiece coordinate
system that has undergone three-dimensional coordinate conversion.
- Stored stroke limit
Stored stroke limits under angular axis control can be set not in a
angular coordinate system but in the Cartesian coordinate system by
setting bits 0, 1, and 2 (AOT, AO2, and AO3) of parameter No. 8201.
Y
Y'
Y'
Fig. 20.4 (c) OT area in a angular coordinate system Fig. 20.4 (d) OT area in a Cartesian coordinate system
Machine coordinates include a value converted for the angular axis
and a compensation value for the perpendicular axis, so that a angular
machine coordinate system as shown in Fig. 20.4 (c) results.
A stored stroke limit is checked in the machine coordinate system, so
that the limit area is slanted to form a rhombus as shown in Fig. 20.4
(c). In this case, the area cannot be identified intuitively. So, stroke
limits are checked not in an actual angular machine coordinate system
but in a virtual Cartesian machine coordinate system as shown in Fig.
20.4 (d).
The functions that operate in the Cartesian coordinate system are:
• Stored stroke check 1 (Both of I and II)
• Stored stroke check 2 (G22/G23)
• Stored stroke check 3
• Stored stroke check before move