Panasonic FP2-PP2T Technical Manual page 148

Limit method 2 (Edge detection of limit switch)
Detects the rising edge of the limit switch in the home return direction and stops. That point becomes the
starting point.
Home method (Edge detection of home switch)
Moves toward the home return direction from the current value, stops after detecting the rising edge of
the first home switch. Thtat point becomes the starting point.
Data set method
The current value becomes the starting point.
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