Operating modes
Positioning
Functional description
9
115
KHB 13.0003-EN
2.0
In Fig. 16 a new positioning is only started if the last positioning has been completed
completely. For this purpose, the master evaluates the
target_reached
bit in the
status
word
object.
v
1
v
2
t
0
t
1
t
2
t
3
t
v
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Fig. 16
Simple travel task
If the
new_set_point
bit as well as the
change_set_immediately
bitof the
control word
are
set to ”1”, the master instructs the drive controller to start the new travel task
immediately.
A travel task already being processed in interrupted in this case as shown in Fig. 17.
For this purpose, the master transfers the next target to the drive controller after the
controller has signalled by deleting the
set_point_acknowledge
bit that it has read the
buffer and started the corresponding positioning. Here it is important that the new travel
task is transferred to the drive controller in time.
v
1
v
2
t
0
t
1
t
2
t
3
t
v
931e_408
Fig. 17
Sequence of travel tasks