Mitsubishi A1SD75M3 User Manual page 402

9 MAIN POSITIONING CONTROL
Reverse direction
POINT
Set a value in " Da.7 Command speed" so that the speed of each axis does not
exceed the " Pr.7 Speed limit value". (The speed limit does not function for the
speed calculated by the AD75 during interpolation control.)
(2) 2-axis circular interpolation control with center point designation
(INC right arc, INC left arc)
Operation chart
In the increment 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 a position at the end of the movement amount 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".
Forward direction
Start point address
(current stop position)
Radius
Reverse direction
Positioning of a complete round with a radius of the distance from the start point
address to the arc center point can be carried out by setting the movement amount
to "0".
Forward direction
Reverese direction
Reverese direction
Movement by circular interpolation
Arc center point
(Arc address)
Movement amount to the end point
Arc center point
(Arc address)
9 - 44
MELSEC-A
Movement amount
to the end point
Forward direction
Movement amount = 0
Forward direction