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8.6
Drive control via PROFIBUS or PROFINET
8.6.1
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.
6HQGGDWD
5HFHLYHGDWD
Figure 8-10
Cyclic data exchange
Converter and higher-level control system package their data in the form of telegrams.
8VHUGDWD
)UDPH
3.:
+HDGHU
3='
7UDLOHU
Figure 8-11
Telegram structure
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
data".
Not every telegram has a "PKW range".
– PZD: The converter receives control commands and setpoints from the higher-level
control - and sends status messages and actual values via "PZD data".
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.
Advanced commissioning
8.6 Drive control via PROFIBUS or PROFINET
Distributed converter for SIMOGEAR geared motors
182
Operating Instructions, 10/2020, FW V4.7 SP13, A5E31298649B AL