Collision Monitoring (Cdon, Cdof, Cdof2) - Siemens SINUMERIK 840DE Programming Manual

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Tool offsets

8.12 Collision monitoring (CDON, CDOF, CDOF2)

Collision monitoring (CDON, CDOF, CDOF2)

When CDON (Collision Detection ON) and tool radius compensation are active, the control

monitors the tool paths with Look Ahead contour calculation. This Look Ahead function

allows possible collisions to be detected in advance and permits the control to actively avoid

When collision detection is off (CDOF), a search is made at inside corners in the previous

traversing block (and if necessary in blocks further back) for a common intersection point for

the current block. If no intersection is found with this method, an error is generated.

Activate bottleneck detection

Deactivate bottleneck detection

Determine tool offset direction from adjacent block parts.

CDOF2 is active only for 3D circumferential milling.

Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1

Fundamentals