Yaskawa MP2000 - Manual (Page 54)

TECHNICAL NOTE
(f) POT & C phase pulse method
The movement starts at the approach speed, and moves to the stroke limit in a positive direction.
The movement is reversed when POT signal is detected at the creep speed.
POT signal is passed in reversed direction and C pulse is detected, the final positioning is
performed. The machine coordinate system is established with the position to be the HOME.
The amount of the movement from C phase pulse is set in the final travel distance of homing.
Positioning speed is set in the rapid feed speed.
When the OT signal is detected while moving at the positioning speed, it becomes OT alarm.
Note: The stop method when the OT signal is detected follows the user constant setting of the servo
amplifier.
Input Name Set content
EXECUTE Execution Block enable
REVERSE Direction
selection
The direction of the homing.
0: Seek in forward
1: Seek in reverse
INPUT INPUT input Not used
AXIS Axis setting Axis number related to the block.
1～16
TYPE Home position
return method 12: "POT&C phase pulse" is selected
TIME Timer limit
setting Maximum time to complete the Homing, if timeout
then Error
TRAVSPD Speed of rapid
feed
Traverse speed in count/second.
0-Max speed (ML3**12)
APRSPD Approach
speed Approach speed in count/second.
0-Max speed (ML3**12)
CRPSPD Creep rate Creep speed in count/second.
0-Max speed (ML3**12)
OFFSET Offset value Final moving distance. And the position will be this
value. If the value is positive, the final moving is in
the same direction of homing. If it is negative the
final moving will be in the opposite of homing
File: MP2000_IndividualFunctionDocument_RevC 54/168
Doc Number: eng.MCD.05.101
11/17/2005