2
2-7
FM 351 Positioning Function Module
EWA 4NEB 720 6001-02
2.4 End of Positioning
You must differentiate between two cases for the end of positioning:
The positioning is correctly terminated via the switchover and switch-off
differences. This process is termed the end in the following.
The positioning is immediately terminated by a “hard” action. This pro-
cess is termed abort in the following.
End signifies that the positioning process is terminated at the switching
points conforming to the differences from rapid speed via creep speed.
Target
–1000 mm 1000 mm
0
Switchover difference, positive Switch-off difference, positive
1
2
3
1 2 3
v
rapid
v
creep
End condition of
positioning
Target range
Figure 2-5 End of Positioning
Pay attention to the following behavior of the signal POS_RCD at the end of
positioning:
POS_RCD is set when the specified target has been properly reached dur-
ing the incremental mode.
POS_RCD is not set:
– When the operating mode is terminated during the incremental mode
with STOP before the specified target is reached.
– During the operating modes jogging or reference-searching.
Definition
End
POS_RCD
Principles of Positioning
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