Auxiliary Point-Specified Circular Interpolation Control - Mitsubishi Electric MELSEC Q Series Programming Manual

6 POSITIONING CONTROL

6.6 Auxiliary Point-Specified Circular Interpolation Control

Servo Positioning
instruction method
ABS
Absolute
INC
Incremental
[Control details]
Circular interpolation control by specification of the end point address and auxiliary
point address (a point on the arc) for circular interpolation is executed.
Auxiliary point-specified circular uses ABS
(Incremental data method) servo instructions.
Common
Number of
control axes
2
Control using ABS
(1) Circular interpolation from the current stop address (address before positioning)
based on the home position through the specified auxiliary point address to the
end point address is executed.
(2) The center of the arc is the point of intersection of the perpendicular bisectors of
the start point address (current stop address) to the auxiliary point address, and
the auxiliary point address to the end point address.
Forward direction
Reverse
direction
0
Reverse direction
Fig.6.9 Circular interpolation control using absolute data method
Items set using MT Developer2
Arc
(Absolute data method)
Auxiliary point address (X
Start point address
(X Y )
,
0 0
Arc central point
6 - 41
(Absolute data method) and INC
Parameter block
Operation by circular interpolation
End point address (X
, Y )
2 2
Forward direction
: Indicates setting data
(Note)
Others
Speed
change
Valid
: Must be set
: Set if required
, Y )
1 1