Parameter Channel - Siemens SINAMICS G120 Operating Instructions Manual

Advanced commissioning
6.5 Drive control via PROFIBUS or PROFINET
6.5.6

Parameter channel

Structure of the parameter channel
The parameter channel consists of four words. The 1st and 2nd words transfer the parameter
number, index and the type of task (read or write). The 3rd and 4th words contain the parameter
content. The parameter contents can be 16-bit values (such as baud rate) or 32-bit values
(e.g. CO parameters).
Bit 11 in the 1st word is reserved and is always assigned 0.
You can find application examples relating to the parameter channel at the end of this section.
AK: Request and response IDs
Bits 12 ... 15 of the 1st The parameter channel words contain the request and response
identifier AK.
Table 6-26
AK
0
1
2
3
4
6
2)
7
2)
8
2)
9
The required element of the parameter is specified in IND (2nd word).
1)
The following request IDs are identical: 1 ≡ 6, 2 ≡ 7 3 ≡ 8.
2)
We recommend that you use identifiers 6, 7, and 8.
Table 6-27
AK
0
1
2
226
Request identifiers, control → inverter
Description
No request
Request parameter value
Change parameter value (word)
Change parameter value (double word)
Request descriptive element
Request parameter value (field)
Change parameter value (field, word)
Change parameter value (field, double word)
Request number of field elements
Response identifiers, inverter → control
Description
No response
Transfer parameter value (word)
Transfer parameter value (double word)
1)
1)
1)
1)
Converter with the CU230P-2 Control Units
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE
Response identifier
positive negative
0 7 / 8
1 / 2 7 / 8
1 7 / 8
2 7 / 8
3 7 / 8
4 / 5 7 / 8
4 7 / 8
5 7 / 8
6 7 / 8