Siemens SINUMERIK 840D sl Function Manual page 109

Figure 3-13
Axis container with container-link axes
The parameterization of an axis container that contains container-link axes must be made on
the master NCU of the link group (MD12510 $MN_NCU_LINKNO == 1).
Alignment of axial machine data
For container axes, all axial machine data marked with the "CTEQ" (container equal) attribute
must have the same value for all container axes. Any different values will be aligned
automatically.
Control startup
During the control startup, all machine data will be aligned to the values of the container axis
of the first slot. If the value of a machine data item changes, the following message will be
displayed: "The axial machine data of the axes in axis container <n> has been adapted".
Activate machine data
If a machine data item of any container axis is changed, the new value also becomes
immediately available in all other container axes. The following message is displayed:
"Caution: This MD will be set for all container axes".
Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Axis container rotation, Fig. 2
B3: Distributed systems - 840D sl only
3.2 NCU link
109