Siemens SINUMERIK 840DE Programming Manual page 218

Frames
6.3 Programmable zero offset
Note
You can use ATRANS to program a translation, which is to be added to existing frames.
Additive instruction, ATRANS X Y Z
Translation through the offset values programmed in the specified axis directions. The
currently set or last programmed zero point is used as the reference.
6-10
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Fundamentals