Siemens SINUMERIK 840D Function Manual page 37

Physical unit
Revolutional feedrate
Compensation value linear position
Compensation value angular position
The user can define different input/output units for machine and setting data. This also requires
an adjustment between the newly selected input/output units and the internal units via the
following machine data:
● MD10220 $MN_SCALING_USER_DEF_MASK
● MD10230 $MN_SCALING_FACTORS_USER_DEF[n]
The following applies:
Selected I/O unit = (MD10230 $MN_SCALING_FACTORS_USER_DEF[n]) * internal unit
The selected I/O unit, expressed in the internal units 1 mm, 1 degree, and 1 s must therefore
be entered in machine data MD10230 $MN_SCALING_FACTORS_USER_DEF[n].
Example 1:
Machine data input/output of the linear velocities is to be in m/min instead of mm/min (initial
state).
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
G2: Velocities, setpoint / actual value systems, closed-loop control
2.2 Velocities, traversing ranges, accuracies
Unit
1 mm/degree
1 mm
1 degree
37