Delta Electronics AH500, Manual

Page: 459 / 547

A H 5 0 0 M o t i o n C o n t r o l M o d u l e M a n u a l

Circular interpolation: Two axes which are perpendicular to each other are used. G17, G18, or
G19 is used to control circular interpolation.
G03
G02
Y-ax is
X- ax is
Ar c s tar t point
(P resent position)
Ar c c enter
point ( , )
I J
Ar c c enter point ( , ) X P YP
1 2

Helical interpolation: Three axes which are perpendicular to one another are used. They move
synchronously. Helical interpolation is the extension of circular interpolation. If a helical
interpolation instruction is used, and the change of height is zero, circular interpolation will be
executed.

If G17 is used, and the position of a z-axis does not change, helical interpolation will be
equivalent to circular interpolation.
X-axi s
Y-axi s
Z-a xis
Z=0
End point
(x, y, z)
Start point
C enter
point
(I, J)
C enter
point
(I, J)
Start point
End point
(x, y)
(I, J)
( x, y)
( x, y, z)
Z=0
Z=0
Z=0
G0 3 (C ou n terclo ckw ise i nte rpo la ti on )
G0 2 (C lo ckwi se in te rpo la tio n )
Z-a xis
X-axi s
Start point
Start point
C enter
point
C enter
point (I, J)
End point
End point
Y-axi s

If G18 is used, and the postion of a y-axis does not change, helical interpolation will be
equivalent to circular interpolation.
X-axi s
Y-axi s
Z-a xis
End point
(x, y, z)
Start point
C enter
point
C enter
point
Start point
End point
G0 3 (C ou n terclo ckw ise i nte rpo la ti on ) G0 2 (C lo ckwi se in te rpo la tio n )
Z-a xis
X-axi s
Start point
Start point
C enter
point
C enter
point
End point
Y-axi s
Y=0
(I, K)
( x, z)
Y=0
(I,K)
Y=0
(I, K)
( x, z)
Y=0
(I, K)
End point
(x, y, z)
9 - 1 0