Siemens CU240B-2 - Page 201

Advanced commissioning
6.2 Inverter control
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC
201
Request and response IDs
Bits 12 … 15 of the 1st word of the parameter channel contain the request and response
identifier.
Table 6- 14 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 6- 15 Response identifiers, inverter → control
Response iden-
tifier
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 parame-
ter 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).