Circle movement <CIRCLE>

<CIRCLE> command passes represents movement along an arc. <CIRCLE> parameters are arc center, arc end point and arc radius. The sign of the radius defines the arc's direction. If the radius is positive then the arc has has counter clockwise (G03 circle interpolation). If the radius is negative then the arc has clockwise direction (G02 circle interpolation). The arc's plane (G17/G18/G19) is defined by the current machining plane, set by the <PLANE> command.

Command:

CIRCLE XC xc, YC yc, ZC zc, R r, XE xe, YE ye, ZE ze

Parameters:

Parameter	CLD array		Description
xc, yc, zc	CLD[1] CLD[2] CLD[3]	CLD.Xc CLD.Yc CLD.Zc	X, Y and Z coordinates of the arc center.
r	CLD[4]	CLD.R	Arc radius. If CLD.R > 0 then the arc is counter clockwise (G03), else if CLD.R < 0 then the arc is clockwise (G02).
xe, ye, ze	CLD[5] CLD[6] CLD[7]	CLD.Xe CLD.Ye CLD.Ze	X, Y and Z coordinates of the arc end point.
xs ys zs	CLD[8] CLD[9] CLD[10]	CLD.Xs CLD.Ys CLD.Zs	X, Y and Z coordinates of the arc start point
XcInc YcInc ZcInc	CLD[11] CLD[12] CLD[13]	CLD.XcInc CLD.YcInc CLD.ZcInc	X, Y and Z coordinates of the arc center point relative to the start point (I, J and K)
RAbs	CLD[14]	CLD.RAbs	Absolute value of the arc radius
RIso	CLD[15]	CLD.RIso	Arc radius in ISO variant - positive if angle less than 180 degrees and negative in other case
Dir	CLD[16]	CLD.Dir	Direction of the arc: 2-clockwise, 3-counterclockwise relative to the ISO plane G17-G19
Plane	CLD[17]	CLD.Plane	Plane of the arc, can take 6 values: 17, 18, 19, -17, -18, -19. Corresponds to the ISO planes G17-G19. A negative value means that the normal of the arc plane is inverse relative to the standard ISO plane.
Length	CLD[18]	CLD.Length	Size of the arc in current linear units
Ang	CLD[19]	CLD.Ang	Angle of the arc in degrees (0 to 360 degrees)
SAng	CLD[20]	CLD.SAng	Start angle of the arc relative to the first axis of the current plane
EAng	CLD[21]	CLD.EAng	End angle of the arc relative to the first axis of the current plane
HelixAng	CLD[22]	CLD.HelixAng	Angle of the helix in degrees. zero for planar circle, positive value for rising helix, negative value for descending helix.