Siemens SINUMERIK 840D sl Function Manual page 164

Several Operator Panels on Several NCUs, Distributed Systems (B3)
Axis container
Axial machine data
If an axis is assigned to an axis container, then certain axial machine data must be identical
for all axes in the axis container as the data are activated. This can be ensured by making a
change to this type of machine data effective on all container axes and all NCUs which see
the axis concerned. The message: "Caution: This MD will be set for all container axes" is
output at the same time.
During power up, all axial machine data of this type are synchronized with the values of the
machine axis in slot 1 of the axis container. In other words, the relevant machine data are
transferred from the machine axis in slot 1 of the axis container to all other container axes.
If machine data with other values are overwritten by this process, the message: "The axial
MD of the axes in axis container <n> have been adapted" is output.
If a slot in the axis container is re-assigned (through writing of machine data
MD12701-12716 AXCT_AXCONF_ASSIGN_TAB<n>), the message: "The MD of the axes in
axis container <n> will be adapted on next power up" is output.
Axial machine data of the type discussed above are identified by attribute
(equal for all axes in the axis container). With an NCU link, the axis container is defined on
the master NCU (see Section "NCU link").
Axis states
If a container axis is active in axis mode or as a positioning spindle (POSA, SPOSA) and its
axis container needs to be rotated, then the rotation cannot be executed until the container
axis has reached its end position.
A container axis which is active as a spindle continues to turn as the axis container rotates.
SPCON (switchover to position control) is attached to the physical spindle, i.e. this status is
passed on with the spindle when an axis container rotates. SETMS (master spindle), on the
other hand, refers to the channel and remains active in the channel when an axis container
rotates.
Continuous-path control mode G64
An axis container rotation interrupts G64 mode in a channel in which a container axis in the
rotating container is also a channel axis, even if it does not belong to the path grouping.
This interruption does not occur, however, until an axis in the rotated axis container is
programmed again.
PLC axes
If a container axis in a container which is enabled for rotation must become a PLC axis, then
this status change request is stored, and the changeover to PLC axis status does not take
place until after completion of the axis container rotation.
164
containerEqual
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Extended Functions