6 POSITIONING CONTROL

6.9.1 Circular interpolation specified method by helical interpolation

The following method of circular interpolation is possible for the helical interpolation. The specified method of circular interpolation connected start point and end point at the seeing on the plane for which performs circular interpolation are as follows.

Servo instruction

Positioning method

Circular interpolation specified method

ABH

Absolute

Radius-specified method

INH

Incremental

less than CW180°

ABH

Absolute

Radius-specified method

INH

Incremental

less than CCW180°

ABH

Absolute

Radius-specified method

INH

Incremental

CW180° or more.

ABH

Absolute

Radius-specified method

INH

Incremental

CCW180° or more.

ABH

Absolute

Central point-specified method CW

INH

Incremental

 

ABH

Absolute

Central point- specified method CCW

INH

Incremental

 

ABH

Absolute

Auxiliary point-specified method

INH

Incremental

 

[Cautions]

(1)The helical interpolation instruction can be used at the both of real/virtual mode.

(2)When the number of pitches is 0 and travel value of linear axis is not "0" is set, operation example is shown below.

Circular interpolation path

Linear axis operation

Start point (X0, Y0, Z0)

Linear axis operates

so that it may become a position according

to this angle.

Arc center

End point (X1, Y1, Z1)

Condition

Operation

Number of pitches is 0 Control on the circular plane.

Number of pitches is not 0 Rotation spirally of the number of pitches to linear axis direction.

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