An in-depth discussion of the Shared Variable Engine can be found in the tutorial Buffered Network-Published Shared Variables: Components and Architecture, while more information about NI-PSP can be found in the LabVIEW Help: Understanding Shared Variable Technology. The Shared Variable Engine manages the use, connectivity, and performance of all Shared Variables on your many data acquisition and control systems, and it does this using the NI Publish-Subscribe Protocol (NI-PSP). You can also add data services to Shared Variables such as logging, alarming, and events, through dialogs using the LabVIEW Datalogging and Supervisory Control Module. Shared Variables are configured through dialogs accessable from the Project Explorer window. Once a Shared Variable has been created using the Network-Published scope, all data written to the variable is available to all systems networked with the host computer. Using the network-published Shared Variable, you easily can pass data within a system and between systems. The Shared Variable is a simplified programming interface for sharing data that was introduced in LabVIEW 8.
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