Sinumerik Alarm 10912 Channel %1 block %2 preprocessing and main run might not be synchronized
%1 = Channel number
%2 = Block number, label
The preset positioning axis run cannot be accurately calculated beforehand. The reason for this is either that the axes involved in the transformation are traversed as positioning axes or that a transformation pole is circumnavigated too frequently by the curve. The velocity check is performed starting from this block in the main run. It is more conservative than with anticipated calculation. The LookAhead function is deactivated. If it is not possible to take over the velocity check into the main run, part program processing is aborted.
– Alarm display.
No action is usually necessary. The velocity control operates more effectively, however, if the part program is modified.
• If a transformation pole is circumnavigated several times by the curve, it helps to split up the block into smaller parts.
• If a positioning axis is the cause, you should check whether the axis can be traversed as a path axis. The Look Ahead function remains deactivated until preprocessing can be based on defined conditions again (e.g. as a result of change from JOG->AUTO, tool or tool edge change).
Clear alarm with the Delete key or NC START.
- Siemens Diagnostics Guide by Siemens