Modulo 360 Degrees - Siemens SINUMERIK 802D sl Function Manual

Software limit switches
The software limit switches and working area limitations are active and are required for
swivel axes with a limited operating range. However, in the case of continuously-turning
rotary axes with MD30310 ROT_IS_MODULO=1, the software limit switches and working
area limitations can be deactivated for individual axes.
19.2

Modulo 360 degrees

Term "Modulo 360 degrees"
With respect to a rotary axis, the term "Modulo" refers to mapping of the axis position
internally in the control within the range from 0 to 359.999 degrees. 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. The mapping process is applied
in JOG and AUTOMATIC mode. Exception: service display.
Machine data settings
Machine data can be used to define programming and positioning (MD30310
ROT_IS_MODULO) as well as the position display (MD30320 DISPLAY_IS_MODULO)
individually in modulo 360° for each rotary axis, depending on the particular machine
requirements.
Axis is modulo
MD30310 ROT_IS_MODULO = 1:
Activation of this machine data allows the special rotary-axis response to be utilized. The
positioning action of the rotary axis for programming (G90, AC, ACP, ACN or DC). A modulo
360° representation is executed within the control after the current work offsets have been
taken into account. The resulting target position is then approached within a revolution.
The software limit switches and working area limitations are inactive, meaning that the
operating range is unlimited.
The modulo 360° position display should always be selected for a modulo axis.
MD30320 DISPLAY_IS_MODULO = 1
Modulo position display
MD30320 DISPLAY_IS_MODULO = 1:
For rotary axes, a position display with "modulo 360°"(one revolution) is often required, i.e.
with a positive direction of rotation the display is periodically reset within the control to 0.000°
after 359.999° is reached, with a negative direction of rotation the positions are also
displayed in the range 0° to 359.999°.
Turning, Milling, Nibbling
Function Manual, 11/2012, 6FC5397-1CP10-5BA0
Rotary Axes (R2)
19.2 Modulo 360 degrees
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