Cartesian Ptp Travel - Siemens SINUMERIK 840D sl Programming Manual

Transformations

7.9 Cartesian PTP travel

7.9 Cartesian PTP travel
7.9
Function
This function can be used to program a position in a cartesian coordinate system, however,
the movement of the machine occurs in the machine coordinates. The function can be used,
for example, when changing the position of the articulated joint, if the movement runs
through a singularity.
Note
The function can only be used meaningfully in conjunction with an active transformation.
Furthermore, "PTP travel" is only permissible in conjunction with G0 and G1.
Programming
N... TRAORI
N... STAT='B10' TU='B100' PTP
N... CP
PTP transversal with generic 5/6-axis transformation
If point-to-point transversal is activated in the machine coordinate system (ORIMKS) during
an active generic 5/6-axis transformation with PTP, tool orientation can be programmed both
with round axis positions
N... G1 X Y Z A B C
as well as with Euler and/or RPY angle vectors irrespective of the kinematics
N... ORIEULER or ORIRPY
N... G1 X Y Z A2 B2 C2
or the direction vectors
N... G1 X Y Z A3 B3 C3
are programmed. Both round axis interpolation, vector interpolation with large circle
interpolation ORIVECT or interpolation of the orientation vector on a peripheral surface of a
taper ORICONxx may be active.
Non-uniqueness of orientation with vectors
When programming the orientation with vectors, there is non-uniqueness in the round axis
positions available. The round axis positions to be approached can be selected by
programming STAT = <...>. If
STAT = 0 is programmed (this is equivalent to the standard setting),
the positions which are at the shortest distance from the start positions are approached. If
STAT = 1 is programmed,
the positions which are at a greater distance from the start positions are approached.
7-68
Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
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