Structure Of The Parameter Channel - Siemens SINAMICS G120 Operating Instructions Manual

8.3.1.3

Structure of the parameter channel

Structure of the parameter channel
The parameter channel consists of four words. The parameter number and index as well as
the type of job (read or write) are transferred in the 1st and 2nd word. The 3rd and 4th word
contains the parameter contents. 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 examples of telegrams at the end of this section.
Request and response IDs
Request and response IDs are written in bits 12 to 15 of the first word of the parameter
channel. The possible identifiers and further explanations can be found in the following
tables.
Overview of the request identifiers control → converter
Table 8- 10
Request
identifier
0
1
2
3
4
6
2)
7
2)
8
2)
9
1)
2)
SINAMICS G120C frequency converter
Operating Instructions, 03/2012, FW V4.5, A5E02999804B AB
Request identifiers control → converter
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
The required element of the parameter is specified in IND (2nd word).
The following request IDs are identical: 1 ≡ 6, 2 ≡ 7 3 ≡ 8.
We recommend that you use identifiers 6, 7, and 8.
8.3 PROFIdrive profile for PROFIBUS and PROFINET
1)
1)
1)
1)
Configuring the fieldbus
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
99