Operating Modes
Parameter manual
b maXX
BM5800
Document No.: 5.16029.03
Baumüller Nürnberg GmbH
546
3.8
Figure 148:
Handshake procedure for positioning
Description of the individual points
to
:
Controller writes new positioning data.
Controller sets "New Set Value" in the control word to identify the data as valid.
The controller acknowledges the new set values by setting "Set Value Acknowledged"
in the status word. At the same time, the "Target Position Reached" signal in the status
word is cleared. This ensures that the Target Position Reached signal from the previous
positioning task is no longer present for the following sequence. The signal will only be
set again when the newly transmitted positioning procedure has been carried out.
Controller starts the positioning procedure by setting the "Start Positioning" bit in the
control word. Only after receiving this command will the positioning be started.
The controller resets the bit for "New Set Value" again. This can also occur before the
start of positioning.
The controller acknowledges the falling edge of the "New Set Value" control bit by re-
setting Set Value Acknowledged.
The controller resets the "Start Positioning" bit again. This can take place during the
still running positioning operation or also only after it has completed.
As soon as the controller has ended the positioning task and the target has been
reached, it sets the "Target Position Reached" signal.
Time-independent control of the positioning is possible with the aid of the handshake pro-
cedure. However it is not absolutely necessary to use the handshake procedure. Posi-
tioning data can also be transmitted to the controller without the "New Set Value"
command. These then take effect immediately with the "Start Positioning" command. The
handshake procedure merely makes sure that the "Target Position Reached" signal is
guaranteed to be reset before the "Start Positioning" command is transmitted.
3.8.2.16 Parameter overview
Functional block:
FbPositioning [118]