Siemens SINUMERIK 840D sl Programming Manual page 355

ORID example
If ORID is active, all the blocks between the two traversing blocks are executed at the end of
the first traversing block. The circle block with constant orientation is executed immediately
before the second traversing block.
ORID
N8 A2=... B2=... C2=...
N10 X... Y... Z...
N12 A2=... B2=... C2=...
N14 M20
N20 X... Y... Z...
Note
The method by which the orientation is changed at an outer corner is determined by the
program command that is active in the first traversing block of an outer corner.
Without change in orientation:If the orientation is not changed at the block boundary, the
cross-section of the tool is a circle, which touches both of the contours.
Job planning
Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
8.6 Tool orientation (ORIC, ORID, OSOF, OSC, OSS, OSSE, OSD, OST)
;The N12 and N14 blocks are executed at the end
;of N10. The circle block is then executed with
;the current orientation.
;Auxiliary functions, etc.
Tool offsets
8-33