YASKAWA JEPMC-MP2300-Y Series User Manual page 385

[ g ] POT Signal Method (OW
Operation after Zero Point Return Starts
Travel is started at the approach speed in the positive direction until the stroke limit is reached.
When the POT signal is detected, the direction is reversed to return at Positioning speed.
When a change in the POT signal status from ON to OFF is detected during the return, the position-
ing is performed.
When the positioning has been completed, a machine coordinate system is established with the final
position as the zero point.
NOT *2
Starting on the Positive Stroke Limit (POT)
∗2
NOT
3C = 13)
The moving amount after a change in the POT signal status is detected is set in the Home Offset.
The positioning speed is set in the Speed Reference.
If a negative value is set for the approach speed, the command will end in an error.
If an OT signal is detected during the positioning speed operation, an OT alarm will occur.
Detecting the change in the OT signal status is performed using software processing. The position
where positioning is completed will depend on the high-speed scan setting, positioning speed, etc.
Do not use this method if repeat accuracy is required in the position where the zero point return
operation is completed.
Start
* 1. The SERVOPACK P-OT signal.
* 2. The SERVOPACK N-OT signal.
The stopping method when the OT signal is detected depends on the setting of SERVO-
PACK parameters.
7.2 Motion Command Details
Approach Speed
(OL 3E)
Zero Point
Home Offset
(OL 42)
Positioning Speed
(OL
Zero Point
Home Offset
(OL 42)
Positioning Speed
(OL
10)
POT *1
Start
10)
∗1
POT
7-27