Fanuc Series 15i/150i-MA (Programming) Operators Manual

B-63324EN/03 PROGRAMMING 19.AXIS CONTROL FUNCTIONS
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amounts of movements represented in the detection unit on the master
axis and slave axis specified in a synchronization start command,
respectively.
 When the master axis is the spindle, and the slave axis is the C-axis
(a) Command : G81.5 T10 C0 L1 ;
Operation : Synchronization between the spindle and C-axis is
started at the ratio of one rotation about the C-axis
to ten spindle rotations.
Pm : (Number of pulses per spindle rotation) ×10 rotations
72000 × 10
Ps : (Amount of movement per rotation about the C-axis)
× CMR × (one rotation) 360000 × 5 × 1
×
××
Both Kn and Kd are within the allowable range. No alarm is
output.
(b) Command : G81.5 T10 C0 L-1 ;
Operation : Synchronization between the spindle and C-axis is
started at the ratio of one rotation about the C-axis
to ten spindle rotations. In this case, however, the
direction of rotation is opposite to that of (a) above.
Pm : (Number of pulses per spindle rotation) × 10
revolutions 72000 × 10
Ps : (Amount of movement per rotation about the C-axis)
× CMR × (one rotation) -360000 × 5 × 1
×
××
Both Kn and Kd are within the allowable range. No alarm is
output.
(c) Command : G81.5 T1 C3.263 ;
Operation : Synchronization between the spindle and C-axis is
started at the ratio of a 3.263-degree rotation about
the C-axis to one spindle rotation.
Pm : (Number of pulses per spindle rotation) × 1 rotation
72000 × 1
Ps : (Amount of C-axis movement) × CMR 3263 × 5
×
×

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