Siemens alarm 14045: Channel %1 block %2 error in tangential circle programming

What it means

A tangentially connecting circle (CT) was programmed, but no arc satisfies both tangency to the preceding element and passage through the given end point. The CT construct derives its center automatically; inconsistent input makes the solution impossible. Verify the end point and the tangent reference block.

Likely causes

• CT end point incompatible with the tangency condition
• Preceding element not suitable as tangent partner
• Degenerate (zero-length) previous contour element