
4. REFERENCE POSITION ESTABLISHMENT
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When reference position return is performed using a grid method, the
reference position can be shifted by a parameter–set distance without
having to move the deceleration dog.
This function is enabled by setting bit 2 of parameter No. 1002 (SFD) to
1. When distance L
SFT
, shown below, is set in parameter No. 1850, the
reference position can be shifted.
Distance L
DEC’
, shown below, for the axis along which reference position
return was last made is indicated on the diagnostic screen (No. 0302).
Direction of reference
position return
L
DEC
L
SFT
Deceleration dog
|
↑
Reference
position
Grid point
|
↑
|
L
SFT
: Reference position shift amount
L
DEC
: Distance from the position where the deceleration dog is turned
off to the first grid point (grid point when the shift amount is 0)
(1)Set the SFD bit (bit 2 of parameter No. 1002) to 1, and set the reference
position shift amount to 0. Then, perform reference position return.
L
DEC
L
SFT
Direction of reference position return
Deceleration dog
|
↑
Reference position
Grid point
|
↑↑
Stop position
|
After the deceleration dog is turned off, the tool stops when the first
grid point is reached. Distance L
DEC
is indicated on the diagnostic
screen (No. 0302).
(2)Determine the distance L
SFT
(reference position shift amount) from
the stop position to the reference position, and set it in parameter No.
1850.
This completes the adjustment of the reference position.
4.3
REFERENCE
POSITION SHIFT
(M SERIES)
General
D How to adjust the
reference position