Siemens SINUMERIK 840D sl Function Manual page 853

The tangential velocity of the rotary axis refers to diameter D
In the case of unit diameter D=D
tangential velocity in mm/min (or inch/min) are numerically identical.
In general, the following applies for tangential velocity:
F = F
With D
Revolutional feedrate
In JOG mode the axis/spindle response also depends on the setting in setting data:
SD41100 $SN_JOG_REV_IS_ACTIVE (revolutional feedrate active in JOG)
SD41100 $SN_JOG_REV_IS_ACTIVE
Active
Not active
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
* D/D
angle unit
= 360/π
unit
An axis/spindle is always traversed with revolutional feedrate
MD32050 $MA_JOG_REV_VELO (revolutional feedrate for JOG)
or
MD32040 $MA_JOG_REV_VELO_RAPID
(revolutional feedrate for JOG with rapid traverse override),
depending on the master spindle.
The axis/spindle response depends on setting data
SD43300 $SA_ASSIGN_FEED_PER_REV_SOURCE
(revolutional feedrate for positioning axes/spindles).
The response of a geometry axis on which a frame with rotation acts depends on
channel-specific setting data
SD42600 $SC_JOG_FEED_PER_REV_SOURCE
(in JOG mode, revolutional feedrate for geometry axes on which a frame with rotation
acts).
, the programmed angular velocity in degrees/min and the
unit
F = Tangential velocity [mm/min]
F = Angular velocity [degrees/min]
angle
D = Diameter acted on by F [mm]
D = Unit diameter [mm]
unit
π = Circle constant Pi
R2: Rotary axes
13.1 Brief description
(unit diameter D =360/π).
unit unit
853