Mitsubishi FX3U-20SSC-H - 8 Manual Control; Mechanical Zero Return Control; Outline of Mechanical Zero Return Control

8 Manual Control
8.1 Mechanical Zero Return Control
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FX3U-20SSC-H Positioning Block User's Manual
8. Manual Control
8.1 Mechanical Zero Return Control
8.1.1 Outline of mechanical zero return control
1. Types of mechanical zero return operation
The mechanical zero return method for the 20SSC-H includes the following three variations (four modes).
→ For the parameters, control data and monitor data, refer to Chapter 11
• DOG type mechanical zero return (1 mode)
The position after stopping from the DOG signal with the zero signal of the servomotor becomes the zero-
point.
→ For details on the DOG type mechanical zero return, refer to Subsection 8.1.2
• Data-set type mechanical zero return (1 mode)
The position after moving with the JOG operation or manual pulse generator is defined as the zero-point.
→ For details on the data-set type mechanical zero return, refer to Subsection 8.1.3
• Stopper type mechanical zero return (2 modes)
The stopper position is defined as the zero-point.
- Stopper type (1)
This mechanical zero return method uses the DOG signal and stopper.
High speed travel is possible up to the DOG signal, thus reducing the time for mechanical zero ret
→ For details of the stopper type (1) mechanical zero return operation, refer to Subsection 8.1.4
- Stopper type (2)
This mechanical zero return method (creep speed only) uses only the stopper.
→ For details of the stopper type (2) mechanical zero return operation, refer to Subsection 8.1.5
2. Mechanical zero return operation
The mechanical zero return operation varies according to the zero return mode. For details, refer to the
following.
→ For details on the DOG type mechanical zero return, refer to Subsection 8.1.2
→ For details on the data-set type mechanical zero return, refer to Subsection 8.1.3
→ For details of the stopper type (1) mechanical zero return operation, refer to Subsection 8.1.4
→ For details of the stopper type (2) mechanical zero return operation, refer to Subsection 8.1.5
1) Turn the mechanical zero return command from OFF to ON to execute mechanical zero return.
2) After calibrating the zero-point, the current address is set as the mechanical zero-point address in the
positioning parameters.
3) The zero return complete flag turns ON.
3. Zero return complete flag
The zero return complete flag turns ON (sets) when the mechanical zero return operation finishes. It turns
OFF (resets) when reactivating the mechanical zero return command, or when turning the power OFF.
BFM Number
Data type
X-axis Y-axis
Mechanical zero return command Operation command 1 BFM #518 b6 BFM #618 b6 Control data
Simultaneous START flag Operation command 1 BFM #518 b10 Control data
Mechanical zero-point address BFM #14029,#14028 BFM #14229,#14228 Positioning parameters
Zero return mode BFM #14031 BFM #14231 Positioning parameters
Current address (user) BFM #1,#0 BFM #101,#100 Monitor data
Current address (pulse) BFM #3,#2 BFM #103,#102 Monitor data
Zero return complete Status information BFM #28 b3 BFM #128 b3 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