6
6.3
Axis couplings (from SW 3.3)
6-436
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
The external position reference value source is selected using P0891.
P0891 = 0 Angular incremental encoder interface (X461/X462)
P0891 = 1 Motor encoder drive A
P0891 = 2 Position actual value, drive A
P0891 = 3
Position reference value, drive A
P0891 = 4
Coupling via PROFIBUS–DP
(the telegram must be appropriately
parameterized for the master and slave drive sides)
P0891 = 1, 2 or 3 is only possible on drive B for a double–axis module.
The following process data is available for the master drive:
XsollP (position reference value, number 50208)
XistP (position actual value, number 50206)
QZsw (status word, slave–to–slave communications, number
50118)
dXcor (correction, position reference/actual value, number 50210)
The process data XsollP, QZsw and dXcor are included in standard
telegram 108.
The following process data are available for the slave drive:
Xext (external position reference value, number 50207)
QStw (status word, slave–to–slave communications, number 50117)
dXcorExt (correction, external position reference value, number
50209)
The process data Xext, QStw and dXcorExt are included in standard
telegram 109.
For a position reference value coupling between ”SIMODRIVE 611 uni-
versal” drives, we recommend that standard telegram 108 is used for
the master drive and standard telegram 109 for the slave drive.
Note
It is not necessary to transfer dXcor or dXcorExt if, with the
coupling switched–in, no external jumps/steps can occur in the
external position reference value.
It is not necessary to transfer QZsw or QStw if, when the coupling
is switched–in, no external jumps/steps can occur in the position
reference value and the ”passive referencing” function is not
required.
In the example in Chapter 5.10.5 for coupling 2 drives (master,
slave drive) a description is provided how the hardware
configuration can be parameterized for the necessary
slave–to–slave data transfer and with SimoCom U, the telegrams.
Parameterizing the
setpoint source
PROFIBUS–DP
process data and
standard
telegrams
6 Description of the Functions
01.99
07.03