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Configuring the fieldbus
6.1 Communication via PROFIBUS
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
115
Changing parameter values
Table 6- 17 Request to change parameters
Data block
Byte n
Bytes n + 1
n
Reference
01 hex ... FF hex
02 hex: Change request
0
Header
01 hex
Number of parameters (m)
01 hex ... 27 hex
2
10 hex: Parameter value
Number of indices
00 hex ... EA hex
(00 hex and 01 hex have the same
significance)
4
Parameter number
0001 hex ... FFFF hex
6
Number of the 1st index
0001 hex ... FFFF hex
8
Address, parameter 1
…
…
Address, parameter 2
…
…
…
…
Address, parameter m
…
Format
02 hex:
Integer 8
03 hex:
Integer 16
04 hex:
Integer 32
05 hex:
Unsigned 8
06 hex:
Unsigned 16
07 hex:
Unsigned 32
08 hex:
Floating Point
10 hex
Octet String
13 hex
Time Difference
41 hex:
Byte
42 hex:
Word
43 hex:
Double word
Number of index values
00 hex ... EA hex
Value of the 1st index
Values, parameter 1
…
Values, parameter 2
…
…
…
Values, parameter m
…
Table 6- 18 Response, if the converter has executed the change request
Data block
Byte n
Bytes n + 1
n
Reference (identical to a change request) 02 hex
0
Header
01 hex
Number of parameters (identical to a change
request)
2
Содержание SINAMICS G120 CU230P-2
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