Siemens SINAMICS G120 CU240B-2 Operating Instructions Manual page 128

Connection to a fieldbus
6.3 Communication via PROFIBUS
Figure 6-9
You first have to define how many parameters (MB62), which parameter numbers (MW50,
MW52, etc.), and how many parameter indices (MB58, MB59, etc.) are read for each
parameter number. The specifications are saved in DB1.
SFC 58 copies the specifications for the parameters to be read from DB1 and sends them to
the inverter as a read request. No other read requests are permitted while this one is being
processed.
128
Function block for reading parameters
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA