Modulo 360 Degrees - Siemens SINUMERIK 840D Function Manual

In general, the following applies for tangential velocity:
F = F
With D
JOG mode: Revolutional feedrate
In the JOG mode, the response of the rotary axis spindle also depends on the setting data:
SD41100 $SN_JOG_REV_IS_ACTIVE (revolutional feed rate for JOG active)
7.2

Modulo 360 degrees

A 360° modulo rotary axis is a rotary axis whose position is mapped to the range from 0° to
359.999°. As a consequence, in principle, the traversing range of a 360° modulo rotary axis is
infinity. The traversing range limits (software limit switch and working area limits) of 360°
modulo rotary axes are not effective.
In the diagram below, the absolute position of a rotary axis in the positive direction of rotation
is represented as a spiral. The pointer to the spiral indicates the absolute position of the rotary
axis (420°). The point where the pointer intersects with the modulo circle marks the
corresponding 360° modulo position (60°).
Figure 7-2
Parameter assignment
Modulo function
The modulo function for a rotary axis is activated using the axis-specific machine data:
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
* D/D
angle unit
= 360/π
unit
Modulo_mapping
F = Tangential velocity [mm/min]
F = Angular velocity [degrees/min]
angle
D = Diameter acted on by F [mm]
D = Unit diameter [mm]
E
π = Circle constant Pi
R2: Rotary axes
7.2 Modulo 360 degrees
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