Mitsubishi Electric MELSEC-L LD75P User Manual page 396

• When the start point address is the same as the sub point address  The error "Sub point setting error"
(error code: 525) will occur.
• When the end point address is the same as the sub point address  The error "Sub point setting error"
(error code: 525) will occur.
• When the start point address, sub point address, and end point address are in a straight line: The error
"Sub point setting error" (error code: 525) will occur.
(c) Positioning data setting example (Reference axis and interpolation axis are
designated as axis 1 and axis 2, respectively.)
The following table shows setting examples when "2-axis circular interpolation control with sub point
designation (INC circular sub)" is set in positioning data No. 1 of axis 1. (The required values are also set in
positioning data No. 1 of axis 2.)
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
Positioning
[Da.6] address/movement
data No.1
amount
[Da.7] Arc address
[Da.8] Command speed
[Da.9] Dwell time
[Da.10] M code
Refer to  Page 152, Section 5.3 for information on the setting details.
Set a value in "[Da.8] Command speed" so that the speed of each axis does not exceed the "[Pr.8] Speed limit value". (The
speed limit does not function for the speed calculated by the LD75 during interpolation control.)
394
Axis 1 (reference Axis 2
axis) setting (interpolation axis)
example setting example

Positioning complete

INC circular sub

1
0 

Axis 2
8000.0m 6000.0m
3000.0m
4000.0m
6000.00mm/min 

500ms

10
Setting details
Set "Positioning complete" assuming that the next
positioning data will not be executed.
Set incremental system, 2-axis circular interpolation
control with sub point designation.
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.
Set the axis to be interpolated (partner axis). If the self-
axis is set, an error will occur.
Set the movement amount. (Assuming "mm" is set in
"[Pr.1] Unit setting".)
Set the sub point address. (Assuming "mm" is set in
"[Pr.1] Unit setting".)
Set the speed during movement. (Designate the
composite speed in "[Pr.20] Interpolation speed
designation method".)
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.