Mitsubishi Electronics QD75D, QD75P [2] 2-axis circular interpolation control with sub point designation (INC circular sub)

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MELSEC-Q
9 MAJOR POSITIONING CONTROL
[2] 2-axis circular interpolation control with sub point designation (INC
circular sub)
Operation chart
In the incremental system, 2-axis circular interpolation control with sub point
designation, positioning is carried out from the current stop positio n (start point
address) to a position at the end of the movement amount set in " Da.6
Positioning address/movement amount" in an arc path that passes thr ough the sub
point address set in " Da.7 Arc addr ess". The movement direction depends on
the sign (+ or -) of the movement amount.
The resulting control path is an arc having as its center the intersecti on point of
perpendicular bisectors of the straight line between the start point addr ess (current
stop position) and sub point address (arc address) calculated from the movement
amount to the sub point, and a straight line between the sub point address (ar c
address) and end point address (positioning address) calculated f rom the
movement amount to the end point.
Reverse direction
Reverse direction
Forward direction
Movement by circular interpolation
Forward direction
Movement amount to the end point
Movement
amount to the
sub point
Movement amount
to sub point Movement amount
to the end point
Arc center
Sub point address
(arc address)
Start point
address