14. Coordinates System Setting Functions
14.3 Machine Zero Point and 2nd, 3rd, 4th Reference Positions
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14.3 Machine Zero Point and 2nd, 3rd, 4th Reference Positions
Function and purpose
The machine zero point serves as the reference for the basic machine coordinate system. It is
inherent to the machine and is determined by the reference (zero) position return.
2nd, 3rd and 4th reference positions relate to the position of the coordinates which have been set
beforehand by parameter from the zero point of the basic machine coordinate system.
2nd reference position
Basic machine coordinate
system
Machine zero point
Local coordinate system
Workpiece
coordinate system
1st reference position
3rd reference position
4th reference position
(G54 to G59)
(X
1
,Y
1
)
G52
x
y
x
y
x
y
(X
2
,Y
2
)