14. Coordinates System Setting Functions
14.13 Coordinate System for Rotary Axis
541
Example of operation
Examples of differences in the operation and counter displays according to the type of rotation
coordinate are given below.
(The workpiece offset is set as 0°.)
(1) Rotary type (short-cut invalid)
(a) The machine coordinate position, workpiece coordinate position and current position are
displayed in the range of 0 to 359.999°.
(b) For the absolute command, the axis moves according to the sign by the excessive amount
obtained by dividing by 360°.
Program
Workpiece
coordinate
counter
Machine
coordinat
e counter
G28 C0.
N1 G90 C-270.
90.000
90.000
N2 C405.
45.000
45.000
N3 G91 C180
225.000
225.000
90°
45°
0°
N3
N2
N1
(2) Rotation type (short-cut valid)
(a) The machine coordinate position, workpiece coordinate position and current position are
displayed in the range of 0 to 359.999°.
(b) For the absolute command, the axis rotates to the direction having less amount of
movement to the end point.
Program
Workpiece
coordinate
counter
Machine
coordinat
e counter
G28 C0.
N1 G90 C-270.
90.000
90.000
N2 C405.
45.000
45.000
N3 G91 C180
225.000
225.000
90°
45°
0°
N3
N2
N1