Siemens alarm 10754: Channel %1 block %2 deselection of the tool radius compensation only possible in linear block

What it means

Compensation must be cancelled with G40 in a straight-line block so the tool returns to the programmed contour along a defined path. Deselection on an arc block leaves the exit position ambiguous and is therefore blocked. Add a linear retract block before G40.

Likely causes

• G40 placed in an arc/curved retract block
• Macro cancelling CRC mid-contour
• Program end reached with CRC still active on a curved path