Connection to a fieldbus
6.3 Communication via PROFIBUS
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA
119
Response
identifier
Request
identifier
Description
positive negative
7
Change parameter value (field, word)
1)
4
|
8
Change parameter value (field, double word)
1)
5
|
9
Request number of field elements
6
|
11
Change parameter value (field, double word) and save in EEPROM
2)
5
|
12
Change parameter value (field, word) and save in EEPROM
2)
4
|
13
Change parameter value (double word) and save in EEPROM
2
↓
14
Change parameter value (word) and save in EEPROM
1
7 / 8
1) The required element of the parameter description is specified in IND (second word).
2) The required element of the indexed parameter is specified in IND (second word).
The meaning of the response identifier for response telegrams (inverter → control) is
explained in the following table. The request identifier determines which response identifiers
are possible.
Table 6- 14 Response identifier (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
Request cannot be processed, task cannot be executed (with error number)
8
No master controller status / no authorization to change parameters of the
parameter channel interface
1) The required element of the parameter description is specified in IND (second word).
2) The required element of the indexed parameter is specified in IND (second word).
If the response identifier is 7 (request cannot be processed), one of the error numbers listed
in the following table will be saved in parameter value 2 (PWE2).