Feed rate in Cycle 210

Question:

In Cycle 210 SLOT the TNC severely reduces the feed rate at the slot ends. Is this normal?

Answer:

Yes, in the arcs at the ends of a slot the TNC moves at the feed rate referring to the tool tip. The displayed feed rate, however, refers to the cutter’s center point path, and therefore appears incorrect. HEIDENHAIN always recommends using Cycle 253 for slots, where this behavior does not occur.