
B-63783EN-1/01 4.REFERENCE POSITION ESTABLISHMENT
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Note
NOTE
1 If an automatic reference position return (G28) is
specified before a reference position is established,
the operation for establishing a reference position is
performed as described above. Then, reference
position return is performed.
2 Alarm OT0450 occurs if:
- The actual reference mark interval does not match
the reference mark interval set in a parameter.
3 This function cannot be used for an axis for which any
of the following functions is used:
- Three-dimensional error correction
4 This function is disabled if any of the following
conditions is satisfied:
- Either parameter 1896 (mark-1 interval) or
parameter 5226 (mark-2 interval) is set to 0.
- Parameters 1896 and 5226 have identical settings.
- The difference between the settings made for
parameters 1896 and 5226 is greater than or equal
to twice either setting.
- The absolute-position detection function is
enabled.
5 If axial movement is made in the direction opposite to
that of reference position return, the movement is
reversed to the direction of reference position return
after three or four reference marks have been
detected. Steps 3 to 5 of the basic procedure for
establishing a reference position are carried out to
establish the reference position.
6 If straightness compensation is used, the following
operation is performed:
- If, after the power is turned on, the reference
position is established on the compensation axis
first and then on the movement axis, the tool
moves along the compensation axis by the
straightness compensation when the reference
position is established on the movement axis.