HEIDENHAIN TNC 407 (280 580) ISO Programming - Manual (Page 151)

TNC 426/TNC 425/TNC 415 B/TNC 407 5 - 1 8
5 Programming Tool Movements
Fig. 5.27: Coordinates of an arc Fig. 5.26: Full circle around I, J with a G02
block
5.4 Path Contours – Cartesian Coordinates
G02/G03/G05: Circular path around pole I, J, K
Prerequisites
The circle center I, J, K must be previously defined in the program.
The tool is at the circle starting point
S .
Defining the direction of rotation
Direction of rotation:
• Clockwise G02
• Counterclockwise G03
• No definition G05
(the last programmed direction of rotation is used)
Input
• End point of the arc
The starting and end points of the arc must lie on the circle.
Input tolerance: up to 0.016 mm (selected with MP 7431).
• For a full circle, the end point in the G02/G03 block should be the
same as the starting point of the contour.
I, J
E
S
Y
X
E
S
J
I X
S
X
E
Y
E
Y
S
Y
X
I, J
S E
Fig. 5.25: Circular path from S to E
around I, J