Siemens SIMATIC S7-300 Product Information page 26

Commissioning
3.3 Preparing the connection to the SINAMICS
3. Click the "Options" button to make additional settings for PROFIBUS. In the
4. To automatically generate the technology system data, open the object properties
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"Constant bus cycle time" tab, activate the "Activate constant bus cycle time" function.
Also activate the "Slave Synchronization" to keep the time values identical for all
connected slaves. Then click the "Recalculate" button to calculate the constant
DP cycle time and the T
(0.250 ms step) and enter the rounded value in the input box.
Recommended rounded values are, for example, 1.5 ms or 2.0 ms.
Click the "OK" button to confirm the settings. The configured objects are then added to
the SIMATIC 300 station.
in the shortcut menu of the technology. In the "Technology system data" tab,
activate the "Generate technology system data" function.
and T times. Round up the calculated constant DP cycle time
i o
Connection of the SINAMICS S120 to the Technology CPU
Product Information, 09/2011, A5E00480378-04