Siemens SINUMERIK 840D sl Programming Manual page 487

Note
Behavior at the end of the part program and for a channel reset
The behavior of
machine data: MD32320 $MA_DYN_LIMIT_RESET_MASK, bit 0
Detection of an active speed limitation in spindle operation
A speed limitation via
following system variables:
● $AC_SMAXVELO (maximum possible spindle speed)
● $AC_SMAXVELO_INFO (identifier for the speed-limiting cause)
Examples
Example 1: Velocity limitation, machine axis
Program code
...
N70 VELOLIM[X]=80
...
Example 2: Speed limitation, spindle
Program code
N05 VELOLIM[S1]=90
...
N50 VELOLIM[C]=45
...
Machine data settings for spindle 1 (AX5)
● Maximum speed of gear stage 1 = 1000 rpm:
● Programming
Job Planning
Programming Manual, 03/2013, 6FC5398-2BP40-3BA1
at the end of the part program and channel reset can be set via the
VELOLIM
VELOLIM
MD35130 $MA_GEAR_STEP_MAX_VELO_LIMIT[ 1, AX5 ] = 1000
VELOLIM
programmed identifier:
MD30455 $MA_MISC_FUNCTION_MASK[ AX5 ], bit 6 = 1
(less than 100 %) can be detected in spindle operation via the
Comment
; The axis slide in the X direction should only be
traversed with a maximum of 80% of the velocity
permissible for the axis.
Comment
; Limiting the maximum speed of spindle 1 to 90% of
1000 rpm.
; Limiting the speed to 45% of 1000 rpm, C is the axis
identifier of S1.
acts together for spindle and axis operation independent of the
Path traversing behavior
10.10 Influencing the motion control
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