Mitsubishi Electronics QD75P, QD75D user manual Axis side speed may exceed, Interpolated Da.6

9 MAJOR POSITIONING CONTROL

MELSEC-Q

Positioning data setting example

[Reference axis is designated as axis 1.]

The following table shows setting examples when "4-axis fixed-feed control (fixed- feed 4)" 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 3 and axis 4.)

			Axis	Axis 1	Axis 2	Axis 3	Axis 4
				(reference	(interpolation	(interpolation	(interpolation
	Setting item			axis) setting	axis) setting	axis) setting	axis) setting
				example	example	example	example
		Da.1	Operation pattern	Positioning	–	–	–
				complete
		Da.2	Control method	Fixed-feed 4	–	–	–
		Da.3	Acceleration time	1	–	–	–
			No.
		Da.4	Deceleration time	0	–	–	–
			No.
	data No. 1	Da.5	Axis to be	–	–	–	–
	Positioning		interpolated
		Da.6	Positioning address/	4000.0 ∝ m	8000.0 ∝ m	4000.0 ∝ m	3000.0 ∝ m
1			movement amount
	Axis
		Da.7	Arc address	–	–	–	–
		Da.8	Command speed	6000.00	–	–	–
				mm/min
		Da.9	Dwell time	500ms	–	–	–
		Da.10	M code	10	–	–	–

Setting details

Set "Positioning complete" assuming the next positioning data will not be executed.

Set 4-axis fixed-feed control.

Designate the value set in

"Pr.25 Acceleration time 1" as the acceleration time at start. Designate the value set in

"Pr.10 Deceleration time 0"

as the deceleration time at deceleration.

Setting not required (setting value will be ignored).

When axis 1 is used as a reference axis, the interpolation axes are axes 2, 3 and 4.

Set the positioning address. (Assuming "mm" is set in

" Pr.1 Unit setting".)

Setting not required (setting value will be ignored).

Set the speed during movement.

Set the time the machine dwells after the positioning stop (pulse output stop) to the output of the positioning complete signal.

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.

POINTS

(1)For 4-axis fixed-feed control, set the "reference axis speed" and make setting so that the major axis side becomes the reference axis. If the minor axis side is set as the reference axis, the major

axis side speed may exceed the "

Pr.8

Speed limit value".

(2)Refer to Section 9.1.6 "Interpolation control" for the reference axis and interpolation axis combinations.

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