8 Manual Control
8.1 Mechanical Zero Return Control
134
FX
3U
-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).
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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.
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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.
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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
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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.
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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.
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For details on the DOG type mechanical zero return, refer to Subsection 8.1.2
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For details on the data-set type mechanical zero return, refer to Subsection 8.1.3
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For details of the stopper type (1) mechanical zero return operation, refer to Subsection 8.1.4
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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
