TwinCAT supplement
EL6631-001048 Version: 3.4.0
Fig.31: "Adapter" tab
If TwinCAT is to be operated in RUN mode, a task must be created. In the simplest case, this is the
aforementioned SyncTask. The call time for the task must not be longer than the PROFINET cycle time! If a
second task is created, e.g. for the PLC, this can also run more slowly.
Fig.32: Creating a task
In the case of less powerful devices (e.g. CX1000, CX9000 with E-bus), the CPU load may reach its limits.
However, the performance can be improved again by means of the following considerations/measures:
• Is it possible to work with just one PLC task?
• Does the cycle time have to be 1 ms?
• If two tasks are used, can the PLC task time be shortened?
• Will several virtual PROFINET devices by required?
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