Siemens Sinumerik 840D sl Programming Manual page 497

Meaning
VELOLIM:
<axis/spindle>:
<value>:
Note
Behavior at the end of the part program and for a channel reset
The behavior of VELOLIM at the end of the part program and channel reset is configured
with bit 0 in machine data MD32320 $MA_DYN_LIMIT_RESET_MASK:
• Bit 0 = 0:
The programmed value for VELOLIM is reset to 100% with channel reset/M30.
• Bit 0 = 1:
The programmed value for VELOLIM is retained beyond the channel reset/M30.
Note
VELOLIM for spindles in synchronized actions
When programming VELOLIM in synchronized actions, a distinction is not made between
spindle and axis operation. Independent of the identifiers used when programming, the
speed in spindle operation and the velocity in axis operation are limited to the same extent.
Job planning
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
Command for velocity correction
Machine axis or spindle whose velocity or speed limit value should
be adapted.
VELOLIM for spindles
Using machine data (MD30455 $MA_MISC_FUNCTION_MASK,
bit 6), when programming in the part program, it can be set as to
whether VELOLIM is effective independent of whether used as
spindle or axis (bit 6 = 1) - or is able to be programmed separately
for each operating mode (bit 6 = 0). If they are to be separately
effective, then the selection is made using the identifier when
programming:
• Spindle identifier S<n> for spindle operating modes
• Axis identifier, e.g. "C", for axis operation
Percentage correction value
The correction value refers to:
• for axes / spindles in axis operation (if MD30455 bit 6 = 0):
to the configured maximum axis velocity
(MD32000 $MA_MAX_AX_VELO).
• for spindles in spindle or axis operation (if MD30455 bit 6 = 1):
to the maximum speed of the active gear unit stage
(MD35130 $MA_GEAR_STEP_MAX_VELO_LIMIT[<n>])
Range of values: 1 ... 100
The value 100 does not influence the velocity or speed.
Path traversing behavior
8.7 Influencing the motion control
497