Mitsubishi Electric MELSEC-L LD75D, User Manual

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375
CHAPTER 9 MAJOR POSITIONING CONTROL
9
9.
2 Set
ting t
he Pos
itioning
D
at
a
(b) 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 positioning control.
• If the movement amount of each axis exceeds "1073741824 (=2
30
)" when "0: Composite speed" is set in
"[Pr.20] Interpolation speed designation method"
*1
*1 The error "Outside linear movement amount range" (error code: 504) occurs at a positioning start. (The maximum
movement amount that can be set in "[Da.6] Positioning address/movement amount" is "1073741824 (=2
30
)".)
(c) Positioning data setting example (Reference axis is designated as axis 1.)
The following table shows setting examples when "3-axis linear interpolation control (INC 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.)
Refer to

Page 152, Section 5.3 for information on the setting details.
●
When the "reference axis speed" is set during 3-axis linear interpolation control, set so 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".
● Refer to  Page 359, Section 9.1.6 for the combination of the reference axis with the interpolation axis.
Setting item
Axis 1 (reference
axis) setting
example
Axis 2
(interpolation axis)
setting example
Axis 3
(interpolation axis)
setting example
Setting details
Positioning
data No.1
[Da.1] Operation pattern Positioning complete  
Set "Positioning complete" assuming
that the next positioning data will not be
executed.
[Da.2] Control system INC linear 3
 
Set incremental system 3-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 and 3.
[Da.6]
Positioning
address/movement
amount
10000.0

m 5000.0

m 6000.0

m
Set the movement amount. (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 6000.00mm/min
 
Set the speed during movement.
[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.
[Da.10] M code 10
 
Set this when other sub operation
commands are issued in combination
with the No. 1 positioning data.