Siemens SINUMERIK 828D Function Manual page 255

B2: Acceleration
4.2 Functions
Path interpolation
If for a machine axis involved in a programmed path the knee-shaped acceleration characteristic parameterized
without the part program instruction DRIVE is active, then a substitute characteristic curve with reduced dynamic
limiting values is determined for the path.
Kinematic transformation
The knee-shaped acceleration characteristic is not considered in an active kinematic transformation. With
internal control, a switchover is done to acceleration without jerk limitation (BRISK) and a substitute characteristic
curve becomes active for the path acceleration.
Basic Functions
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0