Delta D25886 User Manual Page 245

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4. Motion Control Instructions
4-204 DVP-MC operating manual
4.8.5.5 Circular/ Helical InterpolationThe Coordinates of Center of a Circle are Set
API
Controller
DNC_CWIJKG2
Clockwise circular/ helical interpolation
The coordinates of center of a circle are set
265
DNC_CCWIJKG3
Anticlockwise circular/ helical interpolation
The coordinates of center of a circle are set
10MC11T
Instruction explanation:
The two instructions are used for circular/helical interpolation. DNC_CW(IJK) (G2) is for clockwise motion
and DNC_CCW(IJK) (G3) is for anticlockwise motion.
Circular interpolation: The cutter performs the arc cutting of the processed workpieces at the feed speed
specified by parameter Velocity on the circular arc with the fixed center of a circle (IJ/IK/JK) on the specified
plane.
Helical interpolation: The cutter moves on the circular arc on the specified plane, which is circular
interpolation, meanwhile, makes the linear interpolation vertically on the specified plane at the feed speed
specified by parameter Velocity.
Explanation of input and output parameter of the instruction:
Parameter
name
Explanation
Data
type
Available
device
Execute
This instruction is executed when
“Execute” turns Off ->On.
BOOL M, I, Q, constant
X_Pos
The corresponding X-axis coordinates
of the terminal point of the circular arc
REAL Constant, D
Y_Pos
The corresponding Y-axis coordinates
of the terminal point of the circular arc
REAL Constant, D
Z_Pos
The corresponding X-axis coordinates
of the terminal point of the circular arc
REAL Constant, D
A_Pos
The coordinate position of terminal
point of the added axis
REAL Constant, D
B_Pos
The coordinate position of terminal
point of the added axis
REAL Constant, D
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