Appendix
A.1 STEP 7 program examples
SIMATIC ET 200pro FC-2 converter
260
Operating Instructions, 04/2018, FW V4.7 SP10, A5E34257324B AF
Explanation of FC 1
Table A- 3
Request to read parameters
Data block DB 1
Byte n
Bytes n + 1
n
Header
Reference
MB 40
01 hex: Read request
0
01 hex
Number of parameters (m)
MB 62
2
Address, parame-
ter 1
Attribute
10 hex: Parameter value
Number of indexes
MB 58
4
Parameter number
MW 50
6
Number of the 1st index
MW 63
8
Address, parame-
ter 2
Attribute
10 hex: Parameter value
Number of indexes
MB 59
10
Parameter number
MW 52
12
Number of the 1st index
MW 65
14
Address, parame-
ter 3
Attribute
10 hex: Parameter value
Number of indexes
MB 60
16
Parameter number
MW 54
18
Number of the 1st index
MW 67
20
Address, parame-
ter 4
Attribute
10 hex: Parameter value
Number of indexes
MB 61
22
Parameter number
MW 56
24
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 inverter 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 controller takes the parameter
values from the inverter via SFC 59 and saves them in DB 2.
