Siemens SINUMERIK 840D sl Function Manual page 91

Function
The "Smoothing the orientation characteristic (ORISON)" function can be used to smooth
oscillations affecting orientation over several blocks. The aim is to achieve a smooth
characteristic for both the orientation and the contour.
Prerequisites
The "Smoothing the orientation characteristic (ORISON)" function is only available in systems
with 5-/6-axis transformation.
Parameter assignment
Number of blocks
Smoothing of the orientation characteristic is carried out by means of a settable number of
blocks:
MD28590 $MC_MM_ORISON_BLOCKS = <Value>
For most applications, 10 blocks should be sufficient. The minimum value that should be
entered is 4.
Note
If smoothing of the orientation characteristic is activated without sufficient block memory
having been configured for it (MD28590 < 4), an alarm message will be output and the
function cannot be executed.
Maximum block path length
The orientation characteristic is only smoothed in blocks whose traversing distance is shorter
than the settable maximum block path length:
MD20178 $MC_ORISON_BLOCK_PATH_LIMIT
Blocks with longer traversing distances interrupt smoothing and are traversed as
programmed.
Maximum tolerance
Smoothing of the orientation characteristic is carried out with the specified maximum
tolerance being observed (maximum angular displacement of tool orientation in degrees):
SD42678 $SC_ORISON_TOL
Maximum path distance
The maximum distance over which smoothing is carried is the specified path distance:
SD42680 $SC_ORISON_DIST
Activation/deactivation
The function is activated/deactivated in the part program with the following modal G
commands:
ORISON:
ORISOF:
Special Functions
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Smoothing of the orientation characteristic ON
Smoothing of the orientation characteristic OFF
F2: Multi-axis transformations
1.9 Orientation
91