Siemens SINUMERIK 828D Function Manual page 321

Figure 6-2 Fixed stop reached
Fixed stop is not reached
If the programmed end position is reached without the "Fixed stop reached" status being recognized, then the
torque limitation in the drive is canceled via the digital interface and IS DB31, ... DBX62.4 ("Activate travel to fixed
stop") is reset.
Then a block change is executed.
Figure 6-3 Fixed stop is not reached
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
F1: Travel to fixed stop
6.3 Travel to fixed stop
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