Siemens SINAMICS G110D Operating Instructions Manual page 149

Figure 6-34
The request ID defines whether the parameter is to be read or written and also the data type
of the value being transferred. In addition it is possible to choose whether parameters are
written permanently to EEPROM or only to volatile memory. In order to maximise
compatibility with the USS protocol the task ID is retained in full.
Table 6- 56 Request IDs from master to slave
Request Identifier Description
0 No request
1 Request parameter value
2 Modify parameter value (word)
3 Modify parameter value (double word)
4 Request descriptive element
6 Request parameter value (array)
7 Modify parameter value (array, word)
8 Modify parameter value (array, double word)
9 Request number of array elements
11 Modify parameter value (array, double word) and store in EEPROM
12 Modify parameter value (array, word) and store in EEPROM
13 Modify parameter value (double word) and store in EEPROM
14 Modify parameter value (word) and store in EEPROM
In general a PKW request results in a response from the slave. The response ID in the slave
response has different meanings from those in the master message and in particular
includes an error identifier which indicates that the first word of the PWE in the response
contains an error code.
Table 6- 57 Response IDs from slave to master
Response Identifier Description
0 No response
1 Transfer parameter value (word)
2 Transfer parameter value (double word)
3 Transfer descriptive element
4 Transfer parameter value (array word)
5 Transfer parameter value (array double word)
6 Transfer number of array elements
7 Cannot process request, task cannot be executed (with error number as describe in table below)
SINAMICS G110D
Operating Instructions, 2009-05-15, A5E02385577A AB
PKE component structure
6.11 Operation in fieldbus systems
Response identifier
Positive
0
1/2
1
2
3
4/5
4
5
6
5
4
2
1
Functions
Negative
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
7/8
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