Siemens alarm 10764: Channel %1 block %2 discontinuous path with active tool radius compensation

What it means

With radius compensation active the contour must be continuous, but a positional gap was detected between consecutive blocks. Compensating across a jump would offset the wrong edge, so the alarm is raised. Ensure every contour element connects to the next endpoint without interruption.

Likely causes

• Missing intermediate block after CAD/CAM postprocessing
• Chamfer/rounding instruction consuming an entire block and leaving a gap
• Coordinate typo creating a jump between contour elements