Operating instructions

5.2.14. Number of Parameters
For multi-parameter requests specifying the number of the Parameter Address and/or Parameter
Value areas. For a single request the number is 1.
5.2.15. Attribute
The attribute determines which kind of data to access. The frequency converter will respond to
the attributes Value (10H), Description (20H) and Text (30H).
5.2.16. Attribute Value (10H)
The attribute value permits reading or writing of parameter values.
5.2.17. Attribute Description (20H)
The attribute description permits access to the parameter description. It is possible to read out
one single description element, or all elements for one parameter in one telegram. The table below
provides an overview of the existing Parameter Description, which exists for each parameter in
the frequency converter.
Parameter description elements (all elements are read-only):
Sub-index
Meaning Data Type
1 Identifier ID V2
2 Number of array elements or
length or string
U16
3 Standardization factor float
4 Variable attribute Octet string 2
5 Reserved Octet string 4
6 Name Visible string 16
7 Lower limit Octet string 4
8 Upper limit Octet string 4
9 Reserved Octet string 2
10 ID extension V2
11 PCD reference parameter U16
12 PCD normalization V2
0 Complete description Octet string 46
In the following each description element is explained.
Identifier ID
Additional characteristics of a parameter.
VLT
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Profibus 5. How to Access the Parameters
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