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9 MAJOR POSITIONING CONTROL
[1] 2-axis circular interpolation control with center point designation
(ABS circular right, ABS circular left)
Operation chart
In the absolute system, 2-axis circular interpolation control with center point
designation, addresses established by a machine OPR on a 2-axis coordinate
plane are used. Positioning is carried out from the current stop position (start point
address) to the address (end point address) set in "
address/movement amount", in an arc path having as its center the address (arc
address) of the center point set in "
Forward direction
Reverse direction
Reverse direction
Positioning of a complete round with a radius from the start point address to the
arc center point can be carried out by setting the end point address (positioning
address) to the same address as the start point address.
Forward direction
Reverese direction
Reverese direction
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Da.7
Arc address".
Movement by circular interpolation
Start point address
(current stop position)
Radius
Arc address
Arc center point
(Arc address)
9 - 61
MELSEC-Q
Da.6
Positioning
End point address
(positioning address)
Forward direction
Start point address
End point address
=
(current stop position)
(positioning address)
Forward direction
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