Velocities - Siemens sinumerik 840d Programming Manual

Tables
15
15.2 List of system variables
15.2.33

Velocities

Identifier Type
REAL
$P_F
REAL
$AC_OVR
$AC_VC REAL
$AC_VACTB REAL
$AC_VACTW REAL
15-554
Description: System variable/value range/index
$P_F
Path feed F last programmed
$AC_OVR:
Path override for synchronized actions
Multiplicative override component acting in addition to the user OV,
programmed OV and transformation OV. The total factor is restricted
to 200%, however.
It must be rewritten in every interpolator cycle, otherwise the value
applies 100%. $AA_OVR[S1] changes the spindle override.
The override defined by machine data
$MN_OVR_FACTOR_LIMIT_BIN,
$MN_OVR_FACTOR_FEEDRATE[30],
$MN_OVR_FACTOR_AX_SPEED[30],
is not exceeded
This variable can only be accessed from synchronized actions
$AC_VC
Additive path feed compensation for synchronized actions
The compensation is not effective with G0, G33, G331, G332 and
G63.
It must be rewritten in every interpolator cycle, otherwise the value is
0.
With an override of 0, the compensation value has no effect,
otherwise the override has no impact on the compensation value.
The compensation value cannot make the total feedrate negative.
The upper value is limited such that the maximum axis velocities and
accelerations are not exceeded.
The computation with different feedrate components is not affected
by $AC_VC.
The override values defined by machine data
$MN_OVR_FACTOR_LIMIT_BIN,
$MN_OVR_FACTOR_FEEDRATE[30],
$MN_OVR_FACTOR_AX_SPEED[30] and
$MN_OVR_FACTOR_SPIND_SPEED
cannot be exceeded. The additive feedrate override is limited such
that the resulting feedrate does not exceed the maximum override
value of the programmed feedrate.
This variable can only be accessed from synchronized actions
$AC_VACTB
Path velocity in the base coordinate system
This variable can only be accessed from synchronized actions
$AC_VACTW
Path velocity in workpiece coordinate system
This variable can only be accessed from synchronized actions
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
04.00
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Part pro Sync O S
R 2
R W 2
R W 2
RS R 2
RS R 2
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