Drive Control Via Profibus Or Profinet; Receive Data And Send Data - Siemens SINAMICS G120D Operating Instructions Manual

8.5

Drive control via PROFIBUS or PROFINET

8.5.1

Receive data and send data

Overview
Cyclic data exchange
The converter receives cyclic data from the higher-level control - and returns cyclic data to the
control.
Figure 8-5
Converter and higher-level control system package their data in the form of telegrams.
Figure 8-6
A telegram has the following structure:
• Header and trailer form the protocol frame.
• User data is located within the frame:
– PKW: The control system can read or change the parameters in the converter via "PKW
– PZD: The converter receives control commands and setpoints from the higher-level
PROFIdrive and telegram numbers
For typical applications, certain telegrams are defined in the PROFIdrive profile and are assigned
a fixed PROFIdrive telegram number. As a consequence, behind a PROFIdrive telegram number,
there is a defined signal composition. As a consequence, a telegram number uniquely describes
cyclic data exchange.
The telegrams are identical for PROFIBUS and PROFINET.
Converter with the control units CU240D-2
Operating Instructions, 10/2020, FW V4.7 SP13, A5E34262100B AH
Cyclic data exchange
Telegram structure
data".
Not every telegram has a "PKW range".
control - and sends status messages and actual values via "PZD data".
Advanced commissioning
8.5 Drive control via PROFIBUS or PROFINET
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