Siemens CU240S PN-F - Page 156

Functions
5.11 Operation in fieldbus systems
CU240S and CU240E Control Units, FW 3.2
156 Operating Instructions, 03/2009, A5E02440075B AA
Table 5- 70 Coding example for a parameter number in PKE and IND for P7841, index 2
PKE IND
decimal xx 1841 144 2
hex xx 731 90 02
The parameter index is encoded in the second word of the index (IND).
Example: Coding of a parameter number in PKE and IND for P2016, index 3
3.(
[[   
,1' 3:( 3:(
The master and slave exchange data via the request ID and response ID (AK), a process
that is to take place with the parameter specified in the PKE. The transfer status is
communicated with the response ID.
Table 5- 71 Request ID (master → inverter)
Response
ID
Request
ID
Description
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 Request parameter value (field)
1)
4 / 5 7 / 8
7 Change parameter value (field, word)
1)
4 7 / 8
8 Change parameter value (field, double word)
1)
5 7 / 8
9 Request number of field elements 6 7 / 8
11 Change parameter value (field, double word) and save in EEPROM
2)
5 7 / 8
12 Change parameter value (field, word) and save in EEPROM
2)
4 7 / 8
13 Change parameter value (double word) and save in EEPROM 2 7 / 8
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).