Mitsubishi Electric MELSEC-L LD75P User Manual page 394

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.
• When the radius exceeds "536870912 (=2
control is possible is "536870912 (=2
positioning start.
• When the center point address is outside the range of "-2147483648 (-2
error "Sub point setting error" (error code: 525) will occur at a positioning start.
• When the start point address is the same as the end point address  The error "End point setting error"
(error code: 526) will occur.
• 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 (ABS 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.)
392
29
)". (The maximum radius for which circular interpolation
29
)"  An error "Outside radius range" (error code: 544) will occur at
Axis 1 (reference Axis 2
axis) setting (interpolation axis)
example setting example
Positioning

complete

ABS circular sub

1

0
Axis 2 
8000.0m 6000.0m
4000.0m 3000.0m

6000.00mm/min

500ms
10 
31
) to 2147483647 (2
Setting details
Set "Positioning complete" assuming that the next
positioning data will not be executed.
Set absolute 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 end point address. (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 to the end point
address. (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.
31
-1)": The