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9 MAJOR POSITIONING CONTROL
Setting item
Da.1 Operation pattern
Da.2 Control system
Acceleration time
Da.3
No.
Deceleration time
Da.4
No.
Axis to be
Da.5
interpolated
Positioning address/
Da.6
movement amount
Da.7 Arc address
Da.8 Command speed
Da.9 Dwell time
M code
Da.10
Refer to Section 5.3 "List of positioning data" for information on the setting details.
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 (=2
Composite speed" is set in "
... 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 (=2
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 1
Axis 2
Axis
(reference
(interpolation
axis) setting
axis) setting
example
example
Positioning
complete
ABS linear 3
1
0
2
4000.0 µ m
8000.0 µ m
–
6000.00
mm/min
500ms
10
Pr.20
Interpolation speed designation method"
Axis 3
(interpolation
axis) setting
example
Set "Positioning complete" assuming the next
–
–
positioning data will not be executed.
Set absolute system 3-axis linear
–
–
interpolation 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 and 3.
Set the end point address. (Assuming "mm" is
4000.0 µ m
set in " Pr.1
Setting not required (setting value will be
–
–
ignored).
Set the speed during movement to the end
–
–
point address.
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.
9 - 34
MELSEC-Q
30
)" when "0:
Da.6
Positioning
30
)".)
Setting details
Unit setting".)
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