Siemens SINUMERIK 840D Function Manual page 675

Axis dynamics
The axis-specific acceleration and the axis-specific jerk for "Approaching fixed point in JOG"
are determined by the following machine data:
● When traversing with traverse keys or handwheel:
– MD32300 $MA_MAX_AX_ACCEL [0] (maximum axis-specific acceleration for path
– MD32430 $MA_JOG_AND_POS_MAX_JERK (maximum axis-specific jerk)
● During traversing via the G75 part program command:
– MD32300 $MA_MAX_AX_ACCEL [0/1] (maximum axis-specific acceleration for path
– MD32431 $MA_MAX_AX_JERK [0] (maximum axis-specific jerk for path motions in the
Reference:
Function Manual, Basic Functions; Acceleration (B2)
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
motions in the dynamic response mode DYNNORM)
Note
MD32430 $MA_JOG_AND_POS_MAX_JERK is only effective when the axis-specific
jerk limitation for single-axis movements has been enabled for the machine axes to be
traversed:
MD32420 $MA_JOG_AND_POS_JERK_ENABLE [<axis>] == TRUE
motions in the dynamic response mode DYNNORM/DYNPOS)
Note
The type of positioning axis dynamics (DYNNORM or DYNPOS) is defined by the
machine data:
MD18960 $MN_POS_DYN_MODE = <mode>
dynamic response mode DYNNORM)
Note
MD32431 $MA_MAX_AX_JERK is only effective when the axis-specific jerk limitation for
single-axis movements has been enabled for the machine axes to be traversed:
MD32420 $MA_JOG_AND_POS_JERK_ENABLE [<axis>] == TRUE
H1: Manual traversing
17.9 Approaching a fixed point in JOG
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