Sampling of measurements occurs only when the value of the specified Item in the Item Trigger field changes from a value other than 0 (zero) to the value 0 (zero).



For this type of activation is also possible to set a confirmation Item (field Item Confirmation) which is set to 1 by the system after the sampling of the group measures.



Note: The Invert field is available for both the Trigger Item and the Confirmation Item:


    1. if the Invert of the Trigger Item field is selected, sampling starts when the value of the Item changes from 0 (zero) to a value other than 0 (zero).
    2. if the Invert confirmation item field is selected, the system sets the confirmation item value to 0 after the sampling of the measures.