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Semantic Error (SEM1192): There exists already an idle task in resource '...'

In your project, more than one task of the type 'Idle' is defined in the 'Tasks and Events' editor ('PLCnext' node in the PLANT). Only one idle task is allowed in a project.

Remedy

  1. Double-click the error message to open the 'Tasks and Events' editor of the 'PLCnext' node in the PLANT. The suspected table line is marked.
  2. Modify the suspected task by selecting a different 'Task/Event Type' ('Cyclic' for example) and the corresponding properties.
    Programs that should be executed in an idle task can be moved from the task you are currently editing to the already existing idle task: Left-click into the row of the instance to be moved, drag it and drop it under the desired task.

Further Info
For further information on tasks and how to edit them refer to the topic "Task Configuration".