Siemens SINUMERIK 840D sl Programming Manual page 847

once the fill level reaches 2/3 in order to prevent complete emptying and deceleration to
standstill.
Preprocessing stop
Programming the "STOPRE" command in a block will stop block preprocessing and buffering.
The following block is not executed until all preprocessed and saved blocks have been
executed in full. The preceding block is halted in exact stop (as with G9).
NOTICE
Program abort
If tool offset or spline interpolations are active, a "STOPRE" command should not be
programmed, as this will lead to contiguous block sequences being interrupted.
Syntax
Table 3-3
STOPFIFO
...
STARTFIFO
Table 3-4
...
FIFOCTRL
...
Table 3-5
...
STOPRE
...
Note
The "STOPFIFO", "STARTFIFO", "FIFOCTRL" and "STOPRE" commands must be
programmed in their own block.
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Identify machining step:
Automatic preprocessing memory control:
Preprocessing stop:
Work preparation
3.14 Path traversing behavior
847