Siemens SINAMICS G120 CU230P-2, Руководство по эксплуатации, Страница: 126 / 346

Configuring the fieldbus
6.2 Communication via RS485
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
124
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
The following table includes the request ID for telegrams between the master → inverter.
Table 6- 21 Request identifier (master → inverter)
Response
identifier
Request
identifier
Description
Positive Negative
0 No request 0 7
1 Request parameter value 1 / 2 7
2 Change parameter value (word) 1 7
3 Change parameter value (double word) 2 7
4 Request descriptive element
1)
3 7
6 Request parameter value
1) 2)
4 / 5 7
7 Change parameter value (word)
1) 2)
4 7
8 Change parameter value (double word)
1) 2)
5 7
1) The required element of the parameter description is specified in IND (2nd word).
2) Identifier 1 is identical to identifier 6, ID 2 is identical to 7, and 3 is identical to 8. We recommend
that you use identifiers 6, 7, and 8.
The following table includes the response ID for telegrams between the inverter → master.
The response ID depends on the request ID.
Table 6- 22 Response identifier (inverter → master)
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)
1) The required element of the parameter description is specified in IND (2nd word).
2) The required element of the indexed parameter is specified in IND (2nd word).