Siemens SINUMERIK 840DE Programming Manual page 198

Path Action
5.4 Acceleration behavior
DRIVEA axis1,axis2,...)
axis1,axis2,...)
Further information
A change between BRISK and SOFT causes a stop at the block transition. The acceleration
response for the path axes can be defined in machine data.
Apart from the path-related jerk limitation, that acts in the MDA and AUTO modes, there
exists the axis-related jerk limitation that can act on positioning axes and on traversing axes
in the JOG mode.
Example of BRISK and SOFT
N10 G1 X... Y... F900 SOFT
N20 BRISKA(AX5,AX6)
5-16
Reduction of acceleration above a speed for
programmed axes that can be set in
$MA_ACCEL_REDUCTION_SPEED_POINT (only applicable for
FM-NC)
The acceleration behavior set in machine data
$MA_POS_AND JOG_JERK_ENABLE or $MA_ACCEL_TYPE_DRIVE
is active for the programmed axes
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Fundamentals