Siemens sinumerik 840D sl Function Manual page 693

Detailed description
2.5 Tool orientation
The orientation is selected via NC language commands ORIWKS and ORIMKS.
ORIMKS is the initial setting (SW version 2 and higher). The initial setting can be modified via
machine data:
MD20150 $MC_GCODE_RESET_VALUES (RESET position of G groups)
GCODE_RESET_VALUES [24] = 1 → ORIWKS is initial setting
GCODE_RESET_VALUES [24] = 2 → ORIMKS is initial setting
GCODE_RESET_VALUES [24] = 3 → ORIPATH
When ORIPATH is active, the orientation is calculated from the lead and side angles relative
to the path tangent and surface normal vector.
Improper tool orientation
If the tool orientation is programmed in conjunction with the following functions
• G04 Dwell time
• G33 Thread cutting with constant lead
• G74 Approach reference point
• G75 Approach fixed point
• REPOSL Repositioning
• REPOSQ Repositioning
• REPOSH Repositioning
Alarm 12130 "Illegal tool orientation" is output when Euler angles and direction vectors are
selected. The NC program stops (this alarm can also occur in connection with G331, G332
and G63). Alarm 17630 or 17620 is output for G74 and G75 if a transformation is active and
the axes to be traversed are involved in the transformation. This applies irrespective of
orientation programming.
If the start and end vectors are inverse parallel when ORIWKS is active, then no unique plane
is defined for the orientation programming, resulting in the output of alarm 14120.
Alarm 14400 is output if the transformation is switched on or off when a tool offset is active.
In the reverse situation, i.e. a tool offset is selected or deselected when a transformation is
active, no alarm message is output.
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Special functions: Handling Transformation Package (TE4)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0