
B–63682EN/01
5. REFERENCE POSITION
NC FUNCTION
41
Positioning to the reference position can be done by manual operation.
With jogging mode (J), manual reference position return (ZRN) signals,
and signal for selecting manual reference position return axis (±J1 to ±J8)
on, the tool the machine is turned on, it decelerates, and when it is turned
off again, it stops at the first grid point, and reference position return end
signal is output. This point is the reference position.
By performing manual reference position return, the machine coordinate
system and the work coordinate system is established.
There is only one method available to perform manual reference point
return:
In the grid method, a certain grid of the position detection is appointed as
the reference position. The reference position position can be shifted by
the grid shift function.
This function moves the machine to around the reference position set for
each axis in the manual continuous feed mode. Then it sets the reference
position for the machine in the reference position return mode without the
deceleration signal for reference position return. With this function, the
machine reference position can be set at a given position without the
deceleration signal for reference position return.
1 Place the machine in the manual continuous feed mode, and perform
positioning to a position near but not exceeding the reference position
from the position indicated by parameter No. 1006#ZMIx.
2 Enter the reference position return mode, then input the feed axis
direction select signal (+) or (–) for the axis.
3 Positioning is made at the grid point located nearest to the current
point. This point is recorded as the reference position. If the
absolute-position detector is provided, the set reference position is
retained after the power is turned off. In this case, when the power is
turned on again, there is no need for setting the reference position
again.
1 After the reference position is set, when the feed axis select signal (+)
or (–) is input for the axis in the reference position return mode,
reference position return operation is performed in rapid traverse
regardless of which signal (+) or (–) is input.
5.1
MANUAL
REFERENCE
POSITION RETURN
5.1.1
Manual Reference
Position Return
5.1.2
Setting the Reference
Position without Dogs
Explanations
D Setting the reference
position
D Reference position
return