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PROFINET IO protocol
5.4.5
Base Mode Parameter Access Model
The PROFIdrive parameters are accessed according to the model presented below:
Contoller/Supervisor
(Client)
Parameter
Request
Error because
response
not yet available
Error bacause
response
not yet available
Parameter
response
Both indexes can be used to access PROFIdrive parameters. There is no difference in operation
between them with current implementation.
Parameter access service
Base Mode Parameter - Local
Base Mode Parameter - Global
The structure of parameter requests is described in the table below:
Block definition
Request Header
1st Parameter Address
nth Parameter Address
1st Parameter Value(s)
(only for request
"Change parameter")
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
Communication system
Write Parameter response
from PAP
Read Parameter response
from PAP
Read Parameter response
from PAP
Read Parameter response
from PAP
Figure 7. PROFIdrive parameter access model
Table 27. Parameter access services
Table 28. Parameter request
Byte n+1
Request Reference
Axis-No. / DO-ID
Attribute
Parameter Number (PNU)
Subindex
...
Format
Values
...
DU/DO Parameter
manager (Server)
Parameter
Request
Parameter
processing in the
Parameter Manager
Parameter
response
Index
0xB02E
0xB02F
Byte n
Request ID
No. of Parameters = n
No. of Elements
No. of Values
vacon • 31
11611_uk
n
0
2
4
4 + 6 x (n - 1)
4 + 6 x n
5
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