July 2013 6.5 Tilting and swivel axes 773
Module 9232 Movement in the direction of the virtual tool axis
The new PLC Module 9232 makes it possible to trigger a movement in the
direction of the virtual tool axis. The direction of movement is determined by
the algebraic sign in the <Feed rate> parameter. The maximum traverse path
can be limited via
the <Path limitation
> parameter in Au
tomatic operating
modes. The function can be used for retracting via the PLC program, for
example. The global program settings must be set for this purpose (as
described under Constraints).
Constraints:
The <Path limitation> parameter is only effective if an Automatic or Program
Run mode is active during the module call. Path limitation is not active in the
Manual or Handwheel modes of operation.
The module must be called cyclically as long as movements are to be
performed.
For safety reasons, the NC deactivates the function after the first cycle in
which the module was not called anymore.
Path limitation is not active in Manual operating modes; therefore, status 7
is not possible.
With status 2 (interpolator reports an error), the PLC program can only try to
start the functionality again after the PLC run-time system has deactivated
the function. This can be done by interrupting the cyclic calls.
The distance traversed (third return value) is retained even after the
deactivation and after changes of operating modes.
No traverse path value is returned in the Manual operating modes because
there is no contour reference. The Manual Traverse soft key in Automatic
operating modes has the same effect for the module as one of the Manual
operating modes.
The Global Program Settings option (#44) is required.
The module uses the interfaces of handwheel superimpositioning in the
virtual tool axis (Global Program Settings).
The handwheel has priority if it is activated for the virtual tool axis (status 8).
Once handwheel superimpositioning has been activated in the Global
Program Settings, the module returns the distance traversed in Automatic
operating modes.
The distance traversed (third return value) is set to 0 when handwheel
superimpositioning is deactivated in the Global Program Settings.
When handwheel superimpositioning is active, the distance traversed with
the module is retained (visible in the Global Program Settings).
The path limitation active in the interpolator is the minimum from the global
settings (column "Max. value", input field "VT") and the limitation of the
module (third parameter).
The error marker M4203 is only set with status 1 (PLC error) and status 2
(interpolator error). If errors occur during normal operation, the PLC run-time
system deactivates the function as a consequence.
To Next Page
Loading...
