8 Manual Control
8.1 Mechanical Zero Return Control
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FX
3U
-20SSC-H Positioning Block User's Manual
Note
• The zero return command is not accepted if the zero-point pass signal servo status is OFF.
Before executing zero return, be sure to rotate the servomotor at least once to turn the zero-point pass
signal ON. The zero-point pass signal turns ON when the motor passes the motor reference position signal
(Z-phase).
To execute zero return immediately after power-on, specify "1: Motor Z-phase pass unnecessary after
power-on" (default setting) at servo parameter function selection C-4. With this setting, the zero-point pass
signal turns ON even if the motor does not pass the zero-point (Z-phase).
• With the simultaneous start flag ON, the X-axis mechanical zero return command simultaneously starts the
X and Y-axes mechanical zero return operation.
(The 20SSC-H ignores the Y-axis mechanical zero return command.)
BFM Number
Data type
X-axis
Y-axis
Current address (pulse)
BFM #3,#2
BFM #103,#102
Monitor data
Zero return complete
Status information
BFM #28 b3
BFM #128 b3
Monitor data
Positioning completion
Status information
BFM #28 b6
BFM #128 b6
Monitor data
Zero phase passed
Servo status
BFM #63 b0
BFM #163 b0
Monitor data
Function selection C-4
Servo parameters
(Advanced setting)
BFM #15080
BFM #15280
Servo parameters
