Siemens SINUMERIK 840D sl Function Manual page 157

Container rotation
The contents of the axis container slots are variable inasmuch as the contents of the circular
buffer (axis container) can be shifted together by ± n increments.
The number of increments n is defined for each axis container in setting data:
SD41700 $SN_AXCT_SWWIDTH
The number of increments n is evaluated modulo in relation to the number of actually
occupied container slots. A new content arises for all the locations of an axis container
(exceptions: 0 and slot number = increment number).
System variables provide information about the current status of an axis container; these
system variables can be read addressed from the part program and synchronized actions.
Figure 2-21
The axis container model has the following characteristics:
● A channel always sees a fixed number of axes with defined channel axis names (logical
● The "rotation" of the axis container sets new machine axes for all channels that have
Frames in axis container rotations
The assignment between channel axes and machine axes can change when the axis
container rotates. The current frames remain unchanged after a rotation. The user himself is
responsible for ensuring that the correct frames are selected after a rotation by programming
basic frame masks, for example.
Extended Functions
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Several Operator Panels on Several NCUs, Distributed Systems (B3)
Shifting the entries to the axis container slots
machine axis image)
axes in the same axis container.
Axis container
157