Siemens SINAMICS G110M - Structure of the Parameter Channel

Configure fieldbus
7.4 PROFIdrive profile for PROFIBUS and PROFINET
SINAMICS G110M Operating Instructions
Operating Instructions, 04/2015, FW V4.7.3, A5E31298649B AD
141
7.4.1.4
Structure of the parameter channel
Structure of the parameter channel
The parameter channel consists of four words. 1. and 2nd word transfer the parameter
number and index as well as the type of job (read or write) 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
Bits 12 to 15 of the 1st word of the parameter channel contain the request and response
identifier.
Table 7- 3 Request identifiers, control → inverter
Request identi-
fier
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- 4 Response identifiers, inverter → control
Response iden-
tifier
Description
0
No response
1
Transfer parameter value (word)