Siemens sinumerik 802d sl Operation And Programming Manual page 161

Explanation of the parameters
FAxis
LAxis1, LAxis2 – Leading axes 1 and 2 (path axes from which the tangent for
Couple
CS
Opt
for
Angle
Dist
Angletol
Information
If Opt = "P", the dynamic properties of the following axis are taken into account in the velo-
city limitation of the leading axes.
The parameters (Dist and Angletol) limit the error between the following axis and the tan-
gent of the leading axes precisely. Any sudden velocity changes of the following axis due to
sudden changes in the leading axis contour are rounded or smoothed using (Dist and Angle-
tol). The following axis is controlled using LookAhead to keep the deviation as low as possi-
ble.
Inserting an intermediate block at contour corners: TLIFT( )
At one corner of the contour the tangent and thus the setpoint position of the following axis
changes suddenly. Normally, the axis attempts to compensate this sudden change with its
maximum possible velocity. This, however, results in a deviation to the desired tangential
setting over a certain distance on the contour after the corner. If this cannot be tolerated for
technological reasons, the TLIFT( ) instruction can be used to cause the control system to
stop at the corner and to rotate the following axis in the new tangent direction in an automati-
cally generated intermediate block. The angle change from which an automatic intermediate
block is inserted can be configured via machine data.
SINUMERIK 802D sl Operation and Programming Nibbling (BP-N), 06/2006 Edition
6FC5 398-3CP10-0BA0
– Following axis (tangentially following rotary axis)
tracking of the following axis is determined.)
– Coupling factor (interrelation between change of the angle of the
tangent and the following axis.)
Optional specification, default setting = 1
– Identifier for the coordinate system, optional specification:
"B" = Basic coordinate system (default setting)
– Optimization: "S" = Default or
"P" = Automatic adaptation of the time characteristic
following and leading axes
– Offset angle of the following axis
– Approximation travel of the following axis, necessary for Opt = "P"
– Angle tolerance of the following axis, optional specification,
(only evaluated if Opt = "P")
Programming
8.3 Axis movements
8-161