
B-63783EN-1/01 1.AXIS CONTROL
- 251 -
1.12.4 Retraction Function
- Retraction function caused by an external signal
When retract signal RTRCT is set to 1 (on the rising edge of the signal),
retraction is performed according to the retract value set in parameter
No. 7796 and the feedrate set in parameter No. 7795.
The tool does not move along an axis for which the amount of
retraction is set to 0.
After retraction, retraction completion signal RTRCTF is output.
- Retraction function caused by a servo or spindle alarm
When a CNC alarm is issued as a result of a servo axis or spindle axis
error, retraction is performed according to the retract value set in
parameter No. 7796 and the feedrate set in parameter No. 7795.
This function prevents the tool and the workpiece from being damaged
when a servo alarm is issued.
CAUTION
1 Feedhold is invalid for movement during retraction.
2 Feedrate override is invalid for movement during
retraction.
NOTE
1 When a retract signal is set to "1" during automatic
operation, retraction is performed and automatic
operation is stopped.
2 Automatic operation cannot be performed during
retraction.
When cycle start is performed, a warning, "START
REJECT(RETRACT EXECUTING)," is indicated.
3 Retraction movement is performed by linear-
interpolation positioning.
4 Servo position control is stopped 400 ms after
retraction is performed by a servo alarm.
5 Retract completion signal RTRCTF is set to 0 when a
move command is specified for an axis after
retraction on all axes has been completed.