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7.2. For More Advanced Operation
7.2.1. Absolute Position Scale (For Absolute Position Sensor)
7.2. For More Advanced Operation
7.2.1. Absolute Position Scale (For Absolute Position Sensor)
！ Caution: Always turn on the power when the Motor is completely stationary.
l The Megatorque Motor System has its own position scale for the positioning operation and the
control of software over travel limit.
l Once the home position is defined, this System does not require the Home Return every time the
power is turned on because of the built in absolute position sensor.
l Follow the procedure below to set the position scale.
7.2.1.1. Direction of Position Scale
！ Caution: When the DI data is changed, turn off the power once, and then reset
！ Caution: Even the sign of plus/minus of the position scale are reversed, the
l You may reverse the sign of position scale not to hinder operations when the Motor mounting
direction is reversed.
Table 7-14
DI data
0
1
l When the sign of the position scale is reversed, the sign of following functions will be reversed
as well.
Otherwise it may cause shifting the Motor position data.
(1) Direction of position scale -----Refer to "7.2.1.1. Direction of Position Scale."
(2) User home position --------------Refer to "7.2.1.5. Setting User Home Position."
(3) Software over travel limit--------"7.1.8.2. Software Over Travel Limit"
the home position.
direction of hardware over travel limit, and the output phase of position
feedback signal remain unchanged.
à CW or CCW is a direction when you look the Motor from the Motor output axis
(rotor).
à The DI data (DI command) defines counting direction of the coordinate.
à Relation between the DI data and the mounting direction is shown below.
Setting
CW
Standard
Counting in plus
Reversed
Counting in minus
à Direction of all positioning operations
à Setting direction of software over travel limit
à Detecting absolute position
à Absolute home position offset (Offset by AO data)
CCW
Counting in minus
Counting in plus
— 7-40 —
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5
Shipping set
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