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

19.AXIS CONTROL FUNCTIONS PROGRAMMING B-63324EN/03
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amounts of movements represented in the detection unit for 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 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 per spindle rotation.
Pm : (Number of pulses per spindle rotation) × 1 rotation
72000 × 1
Ps : (Amount of C-axis movement) × CMR 3263 × 1
÷ 2
×
×
In this case, an alarm is issued because Kd exceeds the specifiable
range.
(b) Command : G81.5 T1 C3.26 ;
Operation : Synchronization between the spindle and C-axis is
started at the ratio of a 3.26-degree rotation about
the C-axis per spindle rotation.
Pm : (Number of pulses per spindle rotation) × 1
revolution 72000 × 1
Ps : (Amount of C-axis movement) × CMR 3260 × 1
÷ 2
×
×
(a) causes an alarm to be output because the values cannot be
abbreviated. (b) causes no alarm because the ratio of the travel
distances can be abbreviated to a simple ratio.

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