Structure Of Orders And Responses - Siemens SINAMICS S120 Function Manual

Communication PROFIBUS DP/PROFINET IO
10.1 Communications according to PROFIdrive
10.1.4.2

Structure of orders and responses

Structure of parameter request and parameter response
Parameter request
Values for Request header
write access
only
1. parameter address
...
nth parameter address
1. parameter value(s)
...
nth parameter value(s)
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
394
Request reference
Axis
Attribute
Parameter number
Subindex
Attribute
Parameter number
Subindex
Format
Values
...
Format
Values
...
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
Request ID
No. of parameters
No. of elements
No. of elements
No. of values
No. of values
Response ID
No. of parameters
No. of values
No. of values
Values
0x01 ... 0xFF
0x01 Read request
0x02 Write request
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
Offset
0
2
4
6
8
Offset
0
2
4
6
Comment
Drive Functions