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Data Logger Error (DL0002): The trigger condition operand for the data logger session '...' is not defined. Please select a variable or define a constant.

In the Data Logger configuration, invalid trigger conditions are set. Possibly, a variable/port selected as operand was renamed in the GDS Port List or Data List or, if two operands are required (according to the selected 'Operation'), their data types do not match.

Remedy

  1. Double-click the error message to jump to the 'Data Logger Sessions' editor.
  2. Define valid trigger conditions by selecting an 'Operation' and specifying the operand(s) accordingly.
    If you enter a constant literal as operand (e.g., TRUE or INT#1234), the data type must match the selected operation and (if applicable) the data type of the second operand.

    Alternatively, modify the session by deselecting the 'Trigger Condition' checkbox. The session is then performed independent of a task and the trigger conditions are no longer relevant.

    Further information can be found in the section "Data Logger configuration settings".