5
5.3
Basic functions of the non–cyclic data transfer
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
5.3
Basic functions of the non–cyclic data transfer
There are three non–cyclic channels which can be accessed on the
drive parameters from ”SIMODRIVE 611 universal” via PROFIBUS–DP.
An overview of how parameters can be accessed for ”SIMODRIVE 611
universal” is shown in the following diagram.
Drive parameters
PROFIdrive parameter access via DPV1
Read
parameters
Write
parameters
Read
descriptive
elements
S7 protocol
PKW (cyclic)
Master Class 2
Master Class 1 and Class 2
Read
parameters
Write
parameters
Master Class 1
Fig. 5-5
Overview, parameter access operations for PROFIdrive
Note
Every parameter is allocated a parameter number. Profile–specific
parameters are defined for the ranges decimal 900 to 999 and are
reserved from decimal 60000 to 65535.
In order to remain compatible to previous parameter assignments,
when accessing via the DPV1 parameter channel (reading/writing) in
the drive firmware, the index is output starting with 1 and on the
PROFIBUS side reduced by 1 (n–1).
”SIMODRIVE 611 universal” is compatible to the PKW mechanism in
the PROFIdrive Profile, Version 2 and P0879.11; this allows a non–cy-
clic parameter access to be carried–out within the cyclic data ex-
change.
Non–cyclic
parameter access
PKW (cyclic)
5 Communications via PROFIBUS DP
08.99
08.02