
PROGRAMMING20. AXIS CONTROL FUNCTIONS
B–63534EN/02
566
Position feedback
–
+
36000
0
0
36000
360000
360000
+
+
–
Master axis
Cs command
EGB
Slave axis
Cs command
360000
*K2/K1
(*1/10)
*CMR
(*1)
Motor
Workpiece Detector
K2/K1 : Synchronous ratio
*CMR
(*1)
Motor
Tool axis Detector
Fig. 20.8.3 (d) Pulse distribution
As Fig. 20.8.3 (d), when 360000 pulses (Number of pulse for one rotation
of the master axis) are specified, the pulses for slave axis by EGB are equal
to the value which is multiplied to the number of pulse for one rotation
of the slave axis by the ratio of Hob thread and number of teeth (rotation
ratio between master axis and slave axis).
360000 1/10 = 36000
When the retract signal RTRCT<G66#4> is turned to “1” in auto mode
(MEM, MDI, etc.) or manual mode (HNDL, JOG etc.), the axis set in bit
0 (RTR) of the parameter No.7730 moves (retracts) by the amount set in
the parameter No.7741.
NOTE
1 Feedrate in retract is set to the parameter No.7740. Then
the feedrate override is not effective.
2 During the movement in retract, feed hold is not effective.
3 In case that retract signal is turned to “1” in auto mode, the
movement of the auto mode is hold and the retract
movement is done.
1) The EGB synchronization is not canceled by RESET when bit 0
(HBR) of parameter No.7700 is set to 1. Set 1 to this parameter
usually.
2) The EGB synchronization performed even under the following
operation of the slave axis.
D Retract function
Limitations