Mitsubishi Electronics QD75D, QD75P 3 2-axis linear interpolation control, Axis 2 movement amount

9MAJOR POSITIONING CONTROL

9.2.3 2-axis linear interpolation control

MELSEC-Q

In "2-axis linear interpolation control" ("

Da.2

Control system" = ABS linear 2, INC

linear 2), two motors are used to carry out position control in a linear path while carrying out interpolation for the axis directions set in each axis.

(Refer to Section 9.1.6 "Interpolation control" for details on interpolation control.)

[1] 2-axis linear interpolation control (ABS linear 2)

Operation chart

In absolute system 2-axis linear control, addresses established by a machine OPR on a 2-axis coordinate plane are used. Linear interpolation 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".

Forward direction (Y axis)

	Start point address (X1,Y1)
	(current stop position)	End point address (X2,Y2)
	Y2
		(positioning address)
Y axis movement		Movement by linear interpolation of the X axis and Y axis
amount
	Y1

Reverse direction Forward direction (X axis)

X1X2

X axis movement amount

Reverse direction

Example

When the start point address (current stop position) is (1000, 1000) and the end point address (positioning address) is (10000, 4000), positioning is carried out as follows.

Axis 2		Start point address
			(current stop position)
4000				End point address
				(positioning address)
Axis 2 movement amount
(4000-1000=3000)
1000
				Axis 1
0	1000		5000	10000
		Axis 1 movement amount (10000-1000=9000)

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