Mitsubishi Electronics QD75P, QD75D Positioning data will not be executed, At deceleration

9 MAJOR POSITIONING CONTROL

MELSEC-Q

Restrictions

An error will occur and the positioning will not start in the following cases. The machine will immediately stop if the error is detected during a positioning control.

•If the movement amount of each axis exceeds "1073741824 (=230)" when "0: Composite speed" is set in " Pr.20 Interpolation speed designation method"

... The "Outside linear movement amount range error (error code: 504)" occurs at a positioning start.

(The maximum movement amount that can be set in " address/movement amount" is "1073741824 (=230)".)

Da.6

Positioning

Positioning data setting example

[Reference axis is designated as axis 1.]

The following table shows setting examples when "3-axis linear interpolation control (ABS linear 3)" is set in positioning data No. 1 of axis 1. (The required values are also set in positioning data No. 1 of axis 2 and axis 3.)

Axis

Setting item

Axis 1

(reference

axis) setting

example

Axis 2

(interpolation axis) setting example

Axis 3

(interpolation axis) setting example

Setting details

Axis 1 Positioning data No. 1

Da.1	Operation pattern	Positioning	–	–	Set "Positioning complete" assuming the next
		complete			positioning data will not be executed.
	Control system	ABS linear 3	–	–	Set absolute system 3-axis linear interpolation
					control.
					Designate the value set in "
	Acceleration time							Pr.25
Da.3		1	–	–	Acceleration time 1" as the acceleration time
	No.
					at start.
					Designate the value set in "
	Deceleration time							Pr.10
		0	–	–	Deceleration time 0" as the deceleration time
	No.
					at deceleration.
					Setting not required (setting value will be
Da.5	Axis to be	–	–	–	ignored).
	interpolated				When axis 1 is used as a reference axis, the
					interpolation axes are axes 2 and 3.
Da.6	Positioning address/	4000.0 ∝ m	8000.0 ∝ m	4000.0 ∝ m	Set the end point address. (Assuming "mm" is
	movement amount				set in "	Pr.1	Unit setting".)
	Arc address	–	–	–	Setting not required (setting value will be
					ignored).
Da.8	Command speed	6000.00	–	–	Set the speed during movement to the end
		mm/min			point address.
					Set the time the machine dwells after the
	Dwell time	500ms	–	–	positioning stop (pulse output stop) to the
					output of the positioning complete signal.
					Set this when other sub operation commands
Da.10	M code	10	–	–	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.

9 - 34