Fig. 47 Setting The Task Time - Beckhoff BC3150 Documentation

Parameterization and Commissioning
4.2.9.2 Measuring the PLC cycle time
The task time is set in PLC Control. The default setting is 20 ms.
Fig. 47: Setting the task time
In the default setting, the PLC program is called every 20 ms, as long as the general cycle time is less than
20 ms. To determine the load of your system, the PLC cycle time can be measured in the System Manager.
In order to ensure trouble-free operation, the set task time should be 20-30 % higher than the measured total
cycle time. A precise cycle time breakdown can be found under K-Bus tab [} 46] description. The total cycle
time is displayed with the TcBase library (see TcBase.lbx or TcBaseBCxx50.lbx).
50 Version: 2.1.0 BC3150