Mitsubishi Electronics QD75D, QD75P Arc address, Forward direction, Radius Reverse direction

9 MAJOR POSITIONING CONTROL

MELSEC-Q

[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 "

Da.6

Positioning

address/movement amount", in an arc path having as its center the address (arc

address) of the center point set in "

Da.7

Arc address".

Forward direction Movement by circular interpolation

	Start point address	End point address
	(current stop position)
		(positioning address)
	Radius
Reverse direction		Forward direction
	Arc address

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

Arc center point (Arc address)

Start point address =	End point address
(current stop position)	(positioning address)

Reverese direction

Forward direction

Reverese direction

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