Return To The Machine Origin - WEIHONG 200 Series Manual

4. Optional: If the moving direction is opposite to the judged direction, modify
the setting value of parameter Axis Direction(X) to the opposite value.

2.5 Return to the Machine Origin

According to the encoder type, this operation can be divided into:
• Set Datum with an absolute encoder.
• Return to the machine origin with an incremental encoder.
2.5.1 Set Datum with an Absolute Encoder
This operation is used to return to the machine origin with an absolute encoder by
directly setting datum when it is your first time to use the system. And it owns the
following advantages compared to returning to the machine origin with an
incremental encoder:
• No need to set returning orders for all axes in datum setting process.
• No need to set datum again after restarting the system, recovering from power
interruption and E-stop because the system will automatically read the datum
information.
Note: You need to set datum again when the absolute encoder is out of battery.
Before setting datum, ensure the following:
• Hardware devices have been well connected.
• The axis direction is correct. See
• Parameter Enable Encoder Feedback is set to Yes.
• Parameter Encoder Type is set to 1.
Taking X-axis as an example, to set datum with an absolute encoder, do the
following:
1. To enter into BACKREF mode, press
2. To enter into Coor-Reference interface, press
3. To enter into Datum Setting page, press F5.
4. Press 4 / 6, and move X-axis to a fixed position.
5. Press F1. The system automatically reads X-axis position and sets it as X-axis
datum.
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SHANGHAI WEIHONG ELECTRONIC TECHNOLOGY CO., LTD
Check the Axis Direction
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for details.
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