Siemens SINUMERIK 840D sl Programming Manual page 873

Description
Release axis: RELEASE
When enabling the axis please note:
1. The axis must not be involved in a transformation.
2. All the axes involved in an axis link (tangential control) must be enabled.
3. A concurrent positioning axis cannot be replaced in this situation.
4. All the following axes of a gantry master axis are transferred with the master.
5. With coupled axes (coupled motion, master value coupling, electronic gear) only the leading
axis of the group can be enabled.
Accept axis: GET
The actual axis replacement is performed with this command. The channel for which the
command is programmed takes full responsibility for the axis.
Effects of GET:
Axis replacement with synchronization:
An axis always has to be synchronized if it has been assigned to another channel or the PLC
in the meantime and has not been synchronized with "WAITP", G74 or delete distance-to-go
before GET.
● A preprocess stop occurs (as for STOPRE).
● Execution is interrupted until the replacement has been completed.
Automatic "GET"
If an axis is in principle available in a channel but is not currently defined as a "channel axis",
GET is executed automatically. If the axis/axes is/are already synchronized no preprocess stop
is generated.
Setting the axis replacement behavior variably
The transfer point of axes can be set as follows using machine data:
● Automatic axis replacement between two channels then also takes place when the axis has
been brought to a neutral state by WAITP (response as before)
● When requesting an axis container rotation, all axes of the axis container which can be
assigned to the executing channel are brought into the channel using implicit GET or GETD.
A subsequent axle replacement is only permitted again once the axis container rotation has
been completed.
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Work preparation
3.15 Axis functions
873