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MELSEC-
A
9 MAIN POSITIONING CONTROL
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 D75P2 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".
Radius
Movement by circuit interpolation
Forward direction
Reverse
directiton
Reverse directiton
Forward direction
Start point address
(current stop position)
Arc center point
(Arc address)
Movement amount
to the end point
Movement amount to the end point
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 of setting the movement
amount to "0".
Arc center point
Reverse direction
Forward direction
Forward direction
(Arc address)
Movement
amount
= 0
Reverse direction