Mitsubishi A1SD75M3 User Manual page 400

9 MAIN POSITIONING CONTROL
(1) 2-axis circular interpolation control with center point designation
(ABS right arc, ABS left arc)
Operation chart
In the absolute system, 2-axis circular interpolation control with center point
designation, addresses established by a machine zero point return on a 2-axis
coordinate plane are used. Positioning is carried out from the current stop position
(start point address) to the address (end point address) set in " Da.5 Positioning
address/movement amount", in an arc path having as its center the address (arc
address) of the center point set in " Da.6 Arc address".
Reverse direction
Positioning of a complete round with a radius from the start point address to the
arc center point can be carried out by setting the end point address (positioning
address) to the same address as the start point address.
Forward direction
Reverse direction
Reverse direction
Forward direction
Start point address
(current stop position)
Radius
Reverse direction
Arc center point
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Movement by circular interpolation
Arc address
(Arc address)
Start point address
=
(current stop position)
Forward direction
MELSEC-A
End point address
(positioning address)
Forward direction
End point address
(positioning address)