Siemens SINUMERIK 828D Programming Manual page 328

Transformations
6.2 Three, four and five axis transformation (TRAORI)
Programming of directional vector
The components of the direction vector are programmed with
towards the tool adapter; the length of the vector is of no significance.
Vector components that have not been programmed are set equal to zero.
328
A3, B3, C3
Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
. The vector points
Job planning