09.2008 Communication / PROFIBUS
Siemens AG 6SE7087-6QX70 (Version AK)
SIMOVERT MASTERDRIVES Compendium Motion Control 8.2-17
8.2.2.5 Acyclical master class 2 - Operator control (SIMATIC OP)
Functionality only with CBP2.
With a SIMATIC OP as the PROFIBUS DP master, you can achieve
direct access to a drive.
A drive with a CBP2 behaves like a SIMATIC S7 towards a SIMATIC OP.
For access to the drive parameters, the following simple illustration
applies:
Parameter number = Data block number
Parameter subindex = Data block offset
All SIMATIC OPs and TDs with the final digit 7 are suitable.
You can configure SIMATIC OP with "ProTool". The following specific
settings for drives are to be entered during configuration with Pro Tool.
Control units: Protocol always "SIMATIC S7 - 300/400", additional
parameters:
Field Value
Network parameter - Profile DP
Network parameter - Baud rate (as selected)
Communications partner - Address (the PROFIBUS address of the drive)
Communications partner - Slot/rack Don't care, 0
Variables: "General" register:
Field Value
Name (as selected)
Control unit (as selected)
Type
Depending on parameter value addresses,
e.g.:
INT: for I2, O2
DINT: for I4, O4
WORD: for V2, L2
Range DB
DB
(data block number)
Parameter number
1 to 3999
DBB, DBW, DBD
(data block offset)
Subindex
0: for non-indexed parameters
1 to 101: for indexed parameters
Length (not activated)
Acquisition cycle (as selected)
Number of elements 1
Places after the decimal point (as selected)
ProTool
Open-loop control
Variable
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