Appendix
A.1 Application examples
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
333
3$5B:5
1HWZRUN
3DUDPHWHUVIRUZULWLQJ
1HWZRUN
:ULWHUHTXHVW
)&
/
7
'%'%:
0:
/
7
'%'%:
0:
/
7
'%'%:
0:
/
7
'%'%%
0%
/
7
'%'%%
0%
&$//
5(4
0
6)&
,2,'
/$''5
:
5(&180
%)
%
5(&25'
5(7B9$/
0:
3'%'%;%<7(
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0
8
0
5
0
6
0
/
7
'%'%%
0%
/
7
7
'%'%%
/
'%'%%
%
%
/
7
'%'%%
0%
Figure A-4
Writing parameters
Explanation of FC 3
Table A- 5
Request to change parameters
Data block DB 3
Byte n
Bytes n + 1
n
Reference
MB 42
02 hex: Change request
0
Header
01 hex
Number of parameters
MB 44
2
10 hex: Parameter value
Number of indices
00 hex
4
Parameter number
MW 21
6
Address,
parameter 1
Number of the 1st index
MW 23
8
Format
MB 25
Number of index values
MB 27
10
Values,
parameter 1
Value of 1st index
MW35
12
SFC 58 copies the specifications for the parameters to be written from DB 3 and sends them
to the converter. No other write requests are permitted while this one is being processed.
Summary of Contents for SINAMICS G120 CU230P-2
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