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MELSEC-Q
9 MAJOR POSITIONING CONTROL
Positioning data setting example
[Reference axis is designated as axis 1.]
The following table shows setting examples when "4-axis linear int erpolationcontrol (ABS linear 4)" is set in positioning data No. 1 of axis 1. (T he requiredvalues are also set in positioning data No. 1 of axis 2, axis 3 and ax is 4.)
Axis
Setting item
Axis 1
(reference
axis) setting
example
Axis 2
(interpolation
axis) setting
example
Axis 3
(interpolation
axis) setting
example
Axis 4
(interpolation
axis) setting
example
Setting details
Da.1 Operation pattern Positioning
complete –––
Set "Positioning complete"
assuming the next positioning
data will not be executed.
Da.2 Control system ABS linear 4 Set absolute system 4-axis
linear interpolation control.
Da.3 Acceleration time
No. 1–––
Designate the value set in
"Pr.25 Acceleration time 1"
as the acceleration time at start.
Da.4 Deceleration time
No. 0–––
Designate the value set in
"Pr.10 Deceleration time 0"
as the deceleration time at
deceleration.
Da.5 Axis to be
interpolated ––––
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.
Da.6 Positioning address/
movement amount 4000.0 µm 8000.0 µm 4000.0 µm 3000.0 µm
Set the end point address.
(Assuming "mm" is set in
"Pr.1 Unit setting".)
Da.7 Arc address Setting not required (setting
value will be ignored).
Da.8 Command speed 6000.00
mm/min –––
Set the speed during movement
to the end point address.
Da.9 Dwell time 500ms
Set the time the machine dwells
after the positioning stop (pulse
output stop) to the output of the
positioning complete signal.
Axis 1 Positioning data No. 1
Da.10M code 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.
POINTS
When the "reference axis speed" is set dur ing 4-axis linear intrpolation control, set
so the major axis side becomes the reference axis. If the minor axis side is set asthe reference axis, the major axis side speed may exceed the " Pr.8 Speed limitvalue".
Refer to Section 9.1.6 "Interpolation contro l" for the reference axis and
interpolation axis combinations.