Mitsubishi Electric Q172CPU Programming Manual page 326

7 MOTION PROGRAMS FOR POSITIONING CONTROL
[Related Parameters]
[Program Example]
Speed limit value
Circular interpolation arc error : The allowable error range for circular interpolation is
(1) The program which draws a circular arc of more than 180° at a negative circular
arc radius (R) value.
G91 G03 X-50. Y50. R-50. F500. ;
End point X-50, Y50
-50
(2) The program which draws a circular arc of 180° or less at a positive circular arc
radius (R) value.
G91 G03 X-50. Y50. R50. F500. ;
End point X-50, Y50
Feed rate
500[mm/min]
-50
REMARK
(1) The end point coordinates and circular arc radius cannot be omitted.
Always specify the end point coordinates and circular arc radius.
(2) Circular interpolation includes the [degree] axis whose stroke limit is set to be
invalid cannot be executed.
(3) Circular interpolation in the unit combination of [mm] and [degree] or [inch] and
[degree] cannot be executed.
: The maximum feed rate of each axis is set.
(Refer to Section 6.4.1 for the speed limit value of the
parameter block.)
set.
(Refer to Section 6.4.3 for the allowable error range for
circular interpolation of the parameter block.)
Y
Feed rate
50
500[mm/min]
X
Start point
Y
50
X
Start point
7 - 65
(Unit: mm)
(Unit: mm)