Beckhoff EL6731 Documentation page 108

Parameterization and commissioning
Fig. 108: Process Data tab, determine telegram
In the sample the parameter "PKW Interface" has to remain disabled, since Sinamics S (unlike Simodrive
611U) no longer supports the PKW interface.
Determining the Profibus DP cycle
Once the complete fieldbus has been configured, press the button "Calculate MC Times" in the MC tab of the
FC31xx.
The "Estimated DP Cycle Time" (in this case 374 µs) for all axes must be smaller than the NC task time
referred to in section NC Configuration [} 109] (e.g. 2 ms). The actual value should be checked later online.
108 Version: 2.8 EL6731