Mitsubishi Electronics QD75P, QD75D With sub point designation, Pr.1 Unit Setting is set to mm

9 MAJOR POSITIONING CONTROL

Positioning data setting example

MELSEC-Q

[Reference axis and interpolation axis are designated as axis 1 and axis 2, respectively.]

The following table shows setting examples when "2-axis circular interpolation control with sub point designation (INC circular sub)" is set in positioning data No. 1 of axis 1. (The required values are also set in positioning data No. 1 of axis 2.)

Axis

Setting item

Operation pattern

Da.2 Control system

	Da.3	Acceleration time
		No.
1	Da.4	Deceleration time
		No.
No.
data	Da.5	Axis to be
		interpolated
Positioning
	Da.6	Positioning address/
		movement amount
1	Da.7	Arc address
Axis

Da.8 Command speed

Dwell time

Da.10 M code

Axis 1		Axis 2
(reference		(interpolation				Setting details
axis) setting		axis) setting
example		example
Positioning		–		Set "Positioning complete" assuming the next positioning
complete				data will not be executed.
INC circular		–		Set incremental system, 2-axis circular interpolation control
sub				with sub point designation.
				Designate the value set in "
1		–					Pr.25	Acceleration time 1" as
				the acceleration time at start.
				Designate the value set in "
0		–					Pr.10	Deceleration time 0" as
				the deceleration time at deceleration.
1		–		Set the axis to be interpolated (partner axis).
				If the self-axis is set, an error will occur.
8000.0 ∝	m	6000.0 ∝	m	Set the movement amount. (Assuming that the "						Pr.1	Unit
				setting" is set to "mm".)
4000.0 ∝	m	3000.0 ∝	m	Set the sub point address. (Assuming that the "					Pr.1		Unit
				setting" is set to "mm".)
6000.00				Set the speed during movement. (Designate the composite
		–		speed in "	Pr.20	Interpolation speed designation
mm/min
				method".)
				Set the time the machine dwells after the positioning stop
500ms		–		(pulse output stop) to the output of the positioning complete
				signal.
10		–		Set this when other sub operation commands are issued in
				combination with the No. 1 positioning data.

Refer to Section 5.3 "List of positioning data" for information on the setting details.

POINT

Set a value in " Da.8 Command speed" so that the speed of each axis does not exceed the " Pr.8 Speed limit value". (The speed limit does not function for the speed calculated by the QD75 during interpolation control.)

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