Siemens SINAMICS G150 - Page 326

Operation
6.7 Communication according to PROFIdrive
Converter cabinet units
326 Operating Instructions, 07/2016, A5E03347396A
Table 6- 19 Structure of the parameter response
Parameter response
Offset
Values for
read access
only
Error values
for negative
response only
Response header
Request reference mirrored
Response ID
0
Axis mirrored Number of parameters 2
1st parameter value(s)
Format
Number of values
4
Values or error values 6
...
...
nth parameter value(s)
Format
Number of values
Values or error values
...
Description of fields in the parameter request and response
Table 6- 20 Fields in the parameter request and response
Field
Data type
Values
Comment
Request reference
Unsigned8
0x01 ... 0xFF
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.
Request ID Unsigned8 0x01
0x02
Read job
Write job
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 modified data to the non-volatile memory
(p0971, p0977).
Response ID Unsigned8 0x01
0x02
0x81
0x82
Read job(+)
Write job(+)
Read job(-)
Write job(-)
Mirrors the request ID 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.
Drive object
number
Unsigned8
0x00 ... 0xFF
Number
Setting for the drive object number of a drive unit with more than one drive object. Different
drive objects with separate parameter number ranges can be accessed via the same DPV1
connection.
Number of parameters Unsigned8 0x01 ... 0x27 No. 1 ... 39
Limited by DPV1 telegram length
Defines the number of following areas for the parameter address and/or parameter value
for multi-parameter requests.
The number of parameters = 1 for single requests.