GSK GSK980TDc, Manual

Page: 75 / 470

Chapter 3 G Commands
57
Ⅰ
Progra
mming
Ellipse direction: defined by that of G6.2/G6.3, they are the reverse in the front and rear tool
post coordinates.
Front tool post coordinate system Rear tool post coordinate system
Q value: It is a motion angle from the Y positive direction overlooking XZ plane when the tool
CW rotating in the positive direction to the long axis of the ellipse in the right hand
rectangular Cartesian coordinate system as follows:
Front tool post coordinate system Rear tool post coordinate system
Notes:
z A, B are not modal parameter. They are 0 when they are not input. When A=0 or B=0, the system
alarms; when A=B, G02/G03 is executed to machine the circular;
z Q value is a non-modal parameter, and it must be specified when it is used. When it is omitted, it
is 0°, the long and the short axis are parallel or coincident ;
z
Q unit is 0.001°, the angle between it and Z is 180°. When Q 180000 is input, Q180 or Q180.0 is
input, they are 0.18°;
z
When the distance between the starting point and end point is longer than the long axis, the
system alarms;
z One or both of X(U), Z(W) can be omitted; omitting one of them indicates that the starting point
and the end point of the axis are consistent; omitting the both indicates they are the same one;
X
Z
Z
X
Z
X
Z
X