6
6.3
Axis couplings (from SW 3.3)
6-438
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
A coupling factor for all setpoint sources can be defined using P0401 and
P0402. Revolutions of the master drive (P0401) correspond to revolutions
of the slave drive (P0402).
If steps (jumps) occur in the external position reference value, e.g. after
referencing the master drive, this must be signaled to the slave drive so
that this does not execute this step
Coupling via PROFIBUS–DP
––> QZsw.0 = 1 (publisher) or QStw.0 = 1 (subscriber)
The amplitude of the step is transferred in dXcor and is received in
the dXcorExt.
Coupling via the angular incremental encoder
––> not necessary, as it involves an incremental
setpoint input
Exception:
For P0891 = 7 or 8, it may be necessary to use
the signal ”setpoint, master drive” on the slave drive side.
Note
A ”SIMODRIVE 611 universal” as slave drive also operates with
PROFIBUS master drives together which do not support the
concept of multiple correction value transfer. The only thing that is
necessary, is that, for a setpoint step, the control bit and the
correction value are correctly set. In this case, there is a danger,
that after the telegram has been lost, a setpoint step occurs.
The slave drive corrects the setpoint when the 0/1 edge of the
control bit is detected.
If it can be ensured that at the instant that the setpoint step occurs,
there is no coupling, then it is not necessary to transfer the step
location Xcor.
The coupling type is configured in the slave drive using P0410.
The following is defined for a coupling via P0410:
Can be switched–in/switched–out via an input signal or traversing
block
Speed synchronism, position synchronism or to the absolute
position of the master drive
––> refer to the following information.
For PROFIBUS–DP, P0410 = 7, i.e. can be switched–in/out via the in-
put signal, coupling is preset to the absolute position.
Coupling factor
Setpoint steps
Coupling
configuration
(P0410)
6 Description of the Functions
01.99