Mitsubishi Electric MELSEC Q Series Programming Manual page 439

6 POSITIONING CONTROL
POINT
(1) Set "0: Need to pass motor Z phase after the power supply is switched on" in
the "function selection C-4 (PC17)" of servo parameter (expansion setting
parameter) for the home position return by the scale home position signal
detection method.
If "1: Not need to pass motor Z phase after the power supply is switched on" is
set, a minor error (error code: 124) will occur at the home position return start
and the home position return is not executed.
(2) When executing home position return by dogless home position signal
reference method, set the servo parameter (expansion parameter) "Function
selection C-4 (PC17)" by the servo amplifier connected.
(Refer to Section 6.23.14)
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