Siemens SINAMICS G120 - Page 125

Configuring the fieldbus
7.3 PROFIdrive profile for PROFIBUS and PROFINET
Inverter with CU230P-2 Control Units
Operating Instructions, 11/2013, FW V4.6.6, A5E02430659B AG
125
Request and response IDs
Bits 12 to 15 of the 1st word of the parameter channel contain the request and response
identifier.
Table 7- 2 Request identifiers, control → inverter
Request
identifier
Description
Response identifier
positive
negative
0
No request
0
7 / 8
1
Request parameter value
1 / 2
7 / 8
2
Change parameter value (word)
1
7 / 8
3
Change parameter value (double word)
2
7 / 8
4
Request descriptive element
1)
3
7 / 8
6
2)
Request parameter value (field)
1)
4 / 5
7 / 8
7
2)
Change parameter value (field, word)
1)
4
7 / 8
8
2)
Change parameter value (field, double word)
1)
5
7 / 8
9
Request number of field elements
6
7 / 8
1)
The required element of the parameter is specified in IND (2nd word).
2)
The following request IDs are identical: 1 ≡ 6, 2 ≡ 7 3 ≡ 8.
We recommend that you use identifiers 6, 7, and 8.
Table 7- 3 Response identifiers, inverter → control
Response
identifier
Description
0
No response
1
Transfer parameter value (word)
2
Transfer parameter value (double word)
3
Transfer descriptive element
1)
4
Transfer parameter value (field, word)
2)
5 Transfer parameter value (field, double word)
2)
6
Transfer number of field elements
7 Inverter cannot process the request.
In the most significant word of the parameter channel, the inverter sends an error
number to the control, refer to the following table.
8 No master controller status / no authorization to change parameters of the
parameter channel interface
1)
The required element of the parameter is specified in IND (2nd word).
2)
The required element of the indexed parameter is specified in IND (2nd word).