
Functions
5.11 Operation in fieldbus systems
Frequency inverter
170
Operating Instructions, 08.10. 2008, t.b.d.
Add the required message frame type to slot 1 of the frequency converter by dragging and
dropping it from the HW catalog.
Figure 5-27 Define the message frame type of the SINAMICS G120 frequency converter in the
controller
STEP 7 automatically assigns the address range containing the process data for the
frequency converter. Standard message frame 1 occupies four bytes of input data and four
bytes of output data.
Note
Defining the message frame type in the frequency converter
The message frame type setting in HW Config only applies to the controller side. In the
frequency converter, the same message frame type must be set by means of STARTER or
the BOP via parameter P0922.
Final steps
●
Save and compile the project in STEP 7.
●
Establish an online connection between your PC and the S7 CPU and download the
project data to the S7 CPU.
The frequency converter is now connected to the S7 CPU. The communications interface
between the CPU and frequency converter is defined via the PROFIdrive profile. An example
of how you can supply this interface with data can be found in this manual.