Mitsubishi Electric MELSEC-L LD75P User Manual page 141

(11)[Pr.41] Allowable circular interpolation error width
With the "allowable circular interpolation error width", the allowable error range of the calculated arc path and end
*1
point address is set.
If the error of the calculated arc path and end point address is within the set range, circular interpolation will be
carried out to the set end point address while compensating the error with spiral interpolation.
The allowable circular interpolation error width is set in the following axis buffer memory addresses.
• If axis 1 is the reference axis, set in the axis 1 buffer memory address [60, 61].
• If axis 2 is the reference axis, set in the axis 2 buffer memory address [210, 211].
• If axis 3 is the reference axis, set in the axis 3 buffer memory address [360, 361].
• If axis 4 is the reference axis, set in the axis 4 buffer memory address [510, 511].
Start point address
*1 With circular interpolation control using the center point designation, the arc path calculated with the start point address
and center point address and the end point address may deviate.
(a) Setting range
[Pr.1] setting value
0: mm
1: inch
2: degree
3: pulse
(12)[Pr.42] External command function selection
Select a command with which the external command signal should be associated.
[Pr.42] External command
function selection
0: External positioning start
1: External speed change
request
2: Speed-position, position-
speed switching request
3: Skip request
To enable the external command signal, set the "[Cd.8] External command enable" to "1".
Path with spiral interpolation
Center point address
Value set with GX Works2 (unit)
0 to 10000.0 (m)
0 to 1.00000 (inch)
0 to 1.00000 (degree)
0 to 100000 (pulse)
The external command signal input is used to start a positioning operation.
The external command signal input is used to change the speed in the current positioning operation. The new
speed should be set in the "[Cd.14] New speed value"
The external command signal input is used to switch from the speed control to the position control while in the
speed-position switching control mode, or from the position control to the speed control while in the position-
speed switching control mode.
To enable the speed-position switching control, set the "[Cd.24] Speed-position switching enable flag" to "1".
To enable the position-speed switching control, set the "[Cd.26] Position-speed switching enable flag" to "1".
The external command signal input is used skip the current positioning operation.
CHAPTER 5 DATA USED FOR POSITIONING CONTROL
Error
End point address
with calculation
End point address
Value set with program (unit)
-1
m)
0 to 100000 (10
-5
0 to 100000 (10 inch)
-5
0 to 100000 (10 degree)
0 to 100000 (pulse)
Description
5
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