Siemens SINAMICS S120 Function Manual page 474

Communication PROFIBUS DP/PROFINET IO
10.1 Communication according to PROFIdrive
Parameter response
Values for Response header
read access
only
1. parameter value(s)
Error values
for negative
response only
...
nth parameter value(s)
Description of fields in DPV1 parameter request and response
Field
Request reference
Request ID
Response ID
Drive object
number
No. of parameters
Attribute
474
Request reference mirrored
Axis mirrored
Format
Values or error values
...
Format
Values or error values
...
Data type
Unsigned8
Unique identification of the request/response pair for the master. The master changes the
request reference with each new request. The slave mirrors the request reference in its
response.
Unsigned8
Specifies the type of request.
In the case of a write request, the changes are made in a volatile memory (RAM). A save
operation is needed in order to transfer the data to the non-volatile memory (p0971, p0977).
Unsigned8
Mirrors the request identifier and specifies whether request execution was positive or
negative.
Negative means:
Cannot execute part or all of request.
The error values are transferred instead of the values for each subresponse.
Unsigned8
Setting for the drive object number with a drive unit with more than one drive object.
Different drive objects with separate parameter number ranges can be accessed over the
same DPV1 connection.
Unsigned8
Defines the number of adjoining areas for the parameter address and/or parameter value
for multi-parameter requests.
The number of parameters = 1 for single requests.
Unsigned8
Type of parameter element accessed.
Response ID
No. of parameters
No. of values
No. of values
Values
0x01 ... 0xFF
0x01 Read request
0x02 Write request
0x01 Read request (+)
0x02 Write request (+)
0x81 Read request (-)
0x82 Write request (-)
0x00 ... 0xFF Number
0x01 ... 0x27 No. 1 ... 39
Limited by DPV1 telegram length
0x10 Value
0x20 Description
0x30 Text (not implemented)
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Offset
0
2
4
6
Remark
Drive functions