Understanding Shared Variables (DSC Module)

You can use shared variables to represent a real-world input/output point. Shared variables communicate between VIs, remote computers, and hardware through the Shared Variable Engine (SVE). With the LabVIEW Datalogging and Supervisory Control (DSC) Module, you can configure shared variables by editing the following shared variable properties.

• Shared variable data type
• Initial values
• Update deadbands, logging deadbands, and alarm deadbands
• Units of measurement to data
• Alarm messages for a shared variable whose values enter the alarm ranges you set
• Data binding
• Security settings
• Scaling

Note  You can use the features the DSC Module adds only for network-published shared variables.

LabVIEW saves shared variable information in LabVIEW project library (.lvlib) files. You can include as many shared variables in a project library as you need. However, you might notice performance issues if you have insufficient system resources. Refer to the LabVIEW Datalogging and Supervisory Control Module Readme for more information about system requirements.