Round tube, projection
With projected round tube machining, the programmed X/Y path is mapped by parallel projection onto the lateral surface of a tube. The distance from the tube (Z height) is kept constant by transformation on the curved tube. If the distance is changed, a Z height change can be additionally programmed.
Notice

Machining is possible up to a programmable radius limit. This value is always less than the tube radius.
If a position is programmed outside this limit, processing is aborted with the error message ID 292011.
Before selecting the transformation, the tube must be positioned so that the Y axis is within the set limit 'LIMIT' (see NC command #CYL [...]).
The specified feed rate refers to the original path programmed. The real feed rate of the tool in the round tube is higher, especially at the edge zone of the tube.