Fagor alarm 2000: Tool radius greater than the arc radius

What it means

With tool radius compensation (G41/G42) active, the compensated path would require an inside corner radius smaller than the tool radius, which is physically impossible to machine. The CNC stops execution instead of gouging. Use a smaller tool or revise the geometry.

Likely causes

• tool radius entry in tool table larger than intended
• inside fillet radii smaller than the chosen cutter
• D offset number pointing to wrong row of tool table