Siemens SINUMERIK Series Function Manual

R2: Rotary axes
12.2 Modulo 360 degrees
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
685
Revolutional feedrate
In the JOG mode, the response of the axis/spindle also depends on the setting data:
SD41100 $SN_JOG_REV_IS_ACTIVE (revolutional feed rate for JOG active)
SD41100 $SN_JOG_REV_IS_ACTIVE
Active 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 behavior of the axis/spindle depends on the setting data:
SD43300 $SA_ASSIGN_FEED_PER_REV_SOURCE (revolutional feedrate for
positioning axes/spindles)
Not active
Behavior of a geometry axis on which a frame with rotation acts, depends on the
channel-specific setting data:
SD42600 $SC_JOG_FEED_PER_REV_SOURCE (in the JOG mode revolutional
feed rate for geometry axes, on which the frame with rotation acts)
12.2 Modulo 360 degrees
Term "modulo 360°"
Rotary axes are frequently programmed in the 360° representation mode. The axis must be
defined as a rotary axis in order to use the modulo feature.
With respect to a rotary axis, the term "modulo" refers to the mapping of the axis position
within the control in the range 0° to 359.999°. With path defaults > 360° (e.g., for incremental
programming using
G91), the position is mapped in the range of values 0° to 360° following
conversion within the control. Mapping is performed in JOG and AUTOMATIC modes.
Exception: service display.
In the figure below, the rotary-axis absolute position in the positive direction of rotation is
represented as a spiral. An arrow marks the actual absolute position on this spiral (example:
point C' = 420°). By tracing the arrow back around the circle (position 0° of the spiral and
circle are identical), it is possible to assign an appropriate modulo position within the 360°
range to every absolute position. In the example below, absolute position point C' = 420° is
mapped onto point C = 60° using modulo conversion.

Siemens SINUMERIK Series Specifications

General

Axes Control	Up to 31 axes
Category	Control Unit
Manufacturer	Siemens
Series	SINUMERIK
Control Type	CNC
Communication Interfaces	Ethernet, USB
Operating Temperature	0°C to 45°C
Protection Class	IP20
Power Supply	24V DC
Display	Color TFT LCD