Mitsubishi Electric RD77MS2 User Manual page 432

[Pr.41] Allowable circular interpolation error width
The allowable error range of the calculated arc path and end 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.
Ex.
 If axis 1 is the reference axis, set in the axis 1 buffer memory addresses [60, 61].
 If axis 4 is the reference axis, set in the axis 4 buffer memory addresses [510, 511].
Path with spiral interpolation
Start point address Center 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.
[Pr.1] setting value
0: mm
1: inch
2: degree
3: pulse
[Pr.42] External command function selection
Select a command with which the external command signal should be associated.
Setting value
0: External positioning start
1: External speed change request
2: Speed-position, position-speed
switching request
3: Skip request
4: High speed input request
To enable the external command signal, set the "[Cd.8] External command valid" to "1".
12 DATA USED FOR POSITIONING CONTROL
430
12.3 Basic Setting
Error
End point address
with calculation
End point address
Value set with the engineering tool (unit)
0 to 10000.0 (m)
0 to 1.00000 (inch)
0 to 1.00000 (degree)
0 to 100000 (pulse)
Details
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.
The external command signal input is used to execute the mark detection. And, also set to use the external command
signal in the synchronous control.
*1
Value set with a program (unit)
0 to 100000 (  10 -1 m)
0 to 100000 (  10 -5
inch)
0 to 100000 (  10 -5
degree)
0 to 100000 (pulse)