Siemens Sinumerik 840D sl Programming Manual page 135

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 resynchronized with "WAITP", G74 or delete distance-to-
go before GET.
• A preprocess stop follows (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.
Job planning
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
1.15 Axis replacement, spindle replacement (RELEASE, GET, GETD)
Flexible NC programming
135