I created several network shared variable under crio RT target. However, I didn't find the alarming setting for these variables.
Why the alarming setting disappeared in the network shared variable when I created the variable under the RT target ?
The shared variable properties that you can use and edit depends on the data type of the shared variable and on your target and licensed product(s).
More information here: Supported Shared Variable Properties Based on Target and Products (DSC Module or Real-Time Module)
If you want to use the features of the LabVIEW DSC Module, you must host the shared variables on Windows. The LabVIEW DSC Module adds the following functionality to network-published shared variables:
More information here: Using the LabVIEW Shared Variable
All the best,