Siemens SINUMERIK 840D Function Manual page 32

G2: Velocities, setpoint / actual value systems, closed-loop control
2.2 Velocities, traversing ranges, accuracies
Example:
Interpolation cycle = 12 ms
N10 G0 X0 Y0; [mm]
N20 G0 X100 Y100; [mm]
⇒ Path length programmed in block = 141.42 mm
⇒ V
Minimum path, axis velocity
The following restriction applies to the minimum path or axis velocity:
The computational resolution is defined using machine data:
MD10200 $MN_INT_INCR_PER_MM (computational resolution for linear positions)
or
MD10210 $MN_INT_INCR_PER_DEG (computational resolution for angular positions)
If V
min
Example:
MD10200 $MN_INT_INCR_PER_MM = 1000 [incr/mm] ;
Interpolation cycle = 12 ms;
⇒ V
The value range of the feedrates depends on the computational resolution selected.
For the standard assignment of machine data:
MD10200 $MN_INT_INCR_PER_MM
(computational resolution for linear positions) (1000 incr./mm)
or
MD10210 $MN_INT_INCR_PER_DEG
(computational resolution for angular positions) (1000 incr./deg.)
The following value range can be programmed with the specified resolution:
Range of values for path feed F and geometry axes:
Metric system:
0.001 ≤ F ≤ 999,999.999
[mm/min, mm/rev, degrees/min, degrees/rev]
32
= (141.42 mm/12 ms)
max
is not reached, no traversing is carried out.
= 10 /(1000 / x 12 ms) = 0.005
-3 incr
min mm
0.9 = 10606.6 mm/s = 636.39 m/min
*
/ ;
mm
min
Inch system:
0.001 ≤ F ≤ 399,999.999 [inch/min, inch/rev]
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA