6
6.3
Axis couplings (from SW 3.3)
6-437
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
Setpoints, entered via the source, are evaluated at the input for the fol-
lowing couplings:
––> via the angular incremental encoder (P0891 = 0 or 1)
––> via PROFIBUS–DP (P0891 = 4)
Input format (slave drive):
– Xext (external position reference value, number 50207)
– dXcorExt (correction, external position reference value, number
50209)
Position in MSR = input value
P0896
P0895
The following applies:
The output is evaluated ––> PROFIBUS–DP
Output format (master drive):
– XsollP (position reference value, number 50208)
– XistP (position actual value, number 50206)
– dXcor (correction, position reference/actual value, 50210)
Output value = position in MSR
P0884
P0896
The following applies:
The output value must be able to be represented using 32 bits. This
means that the maximum traversing distance that can be repre-
sented is:
P0896
P0895 (P0884)
(2
31
–1)
–2
31
P0896
P0895 (P0884)
The standard settings for PROFIBUS–DP are:
– P0884 = 10000
– P0895 = 10000
– P0896 = 10000 MSR (
m)
Recommendation: Modify the standard setting as follows to achieve
the best possible resolution:
– P0884 = 2048
– P0895 = 2048
– P0896 = 5 MSR (
m)
m
5
2048
For this setting, the resolution is
and the traversing distance that can be represented is
5.24 m.
Note
Changes to P0884, P0895 and P0896 are incorporated in P0032
(external position reference value).
The external position reference value can be inverted using P0897.
Note
Changes to P0897 are incorporated in P0032 (external position
reference value).
Input/output
evaluation
Position reference
value inversion
6 Description of the Functions
01.99
02.02