R2: Rotary axes
12.1 Brief Description
Extended Functions
684 Function Manual, 03/2013, 6FC5397-1BP40-3BA1
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r
r
Figure 12-2 Limited operating area of a modulo rotary axis
Position display
The value range for the position display can be set to the modulo 360° representation, which
is frequently selected for rotary axes:
MD30320 $MA_DISPLAY_IS_MODULO = 1
Feedrate
The programmed feedrate F corresponds to an angular velocity (degrees/min) in the case of
rotary axes.
If rotary axes and linear axes traverse a common path with
G94 or G95, the feedrate should be
interpreted in the linear-axis unit of measurement (e.g., mm/min, inch/min).
The tangential velocity of the rotary axis refers to diameter D
unit
(unit diameter D
unit
=360/π).
In the case of unit diameter D=D
unit
, the programmed angular velocity in degrees/min and the
tangential velocity in mm/min (or inch/min) are numerically identical.
In general, the following applies for tangential velocity:
F = F
angle
* D/D
unit
F = Tangential velocity [mm/min]
F
angle
= Angular velocity [degrees/min]
D = Diameter acted on by F [mm]
With D
unit
= 360/π D
unit
= Unit diameter [mm]
π = Circle constant Pi
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