
19.AXIS CONTROL FUNCTIONS PROGRAMMING B-63784EN/01
- 794 -
(1) 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
144000
3263
=
272000
13263
=
Kd
Kn
×
×
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
7200
163
=
272000
13260
=
Kd
Kn
×
×
(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.