Siemens SINAMICS G120 Operations Instructions Page 290

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Appendix
A.1 Application Examples
Inverter with CU240B-2 and CU240E-2 Control Units
288 Operating Instructions, 01/2011, FW 4.4, A5E02299792B AB
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.
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