The ARCT command is similar to the ARC command, with the addition of interpolation with a third axis to perform a helical or tangential type movement.  ARCT is a write-only command and can only be used for an arc interpolation between the X and Y axes, with the Z axis used for linear coordination.  Arcs can be drawn in either the CW or CCW direction.  All ARCT moves are interpreted as absolute moves.


Applies to: CMD-4CR, CMD-4EX-SA


ASCII/Standalone                ARCT                global  high speed setting

Syntax:

Write:

               ARCTN[C1]:[C2]:[Ɵ]:[Z target]        * for CCW motion

               ARCTP[C1]:[C2]:[Ɵ]:[Z target]        * for CW motion

Where:        N is CCW motion,

P is CW motion

[C1]:[C2]  specifies the arc coordinate center of X, Y axes (32-bit value),
[Ɵ]                      specifies the end of position of the arc (unit = 0.001 degrees, 0-360,000),

[Z target]  specifies the target position for the Z-axis (32-bit value)

Reply 

Command is accepted and executed

Write:           

OK


Command cannot be processed

       An error message is returned. See Error Codes

Example: 

       Write:        

ARCTP1000:0:180000:1000        * Arc interpolation of X and Y axis, center X = 1000, Y = 0, 180-degree arc with movement along the Z-axis to absolute position of 1000

Notes:

  • Other conditions:

Joystick operation is disabled

Manual pulse generator (MPG) operation is disabled

Current operations are stopped

Error status is off

See also:

Coordinated Motion

ARC, CIR, CIRT

Commander Manual

2.3 Interpolation Operation

2.3.3 Helical or Tangential interpolation

2.3.4 Buffered interpolation operation