Appendix
A.1 Application examples
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
332
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
Explanation of FC 1
Table A- 4
Request to read parameters
Data block DB 1
Byte n
Bytes n + 1
n
Reference
MB 40
01 hex: Read request
0
Header
01 hex
Numberof parameters (m)
MB 62
2
Attribute
10 hex: Parameter value
Number of indices
MB 58
4
Parameter number
MW 50
6
Address,
parameter 1
Number of the 1st index
MW 63
8
Attribute
10 hex: Parameter value
Number of indices
MB 59
10
Parameter number
MW 52
12
Address,
parameter 2
Number of the 1st index
MW 65
14
Attribute
10 hex: Parameter value
Number of indices
MB 60
16
Parameter number
MW 54
18
Address,
parameter 3
Number of the 1st index
MW 67
20
Attribute
10 hex: Parameter value
Number of indices
MB 61
22
Parameter number
MW 56
24
Address,
parameter 4
Number of the 1st index
MW 69
26
SFC 58 copies the specifications for the parameters to be read from DB 1 and sends them to
the converter as a read request. No other read requests are permitted while this one is being
processed.
After the read request and a waiting time of one second, the control takes the parameter
values from the converter via SFC 59 and saves them in DB 2.
Summary of Contents for SINAMICS G120 CU230P-2
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