Data Binding to a Shared Variable

[crossrulz]

If I set up Data Binding on an indicator to a network shared variable, how often is the indicator updated?

I am using LV 8.5 with the RT module. I am trying to get updates from the RT target to show up on the Windows computer. I would prefer not to constantly poll the shared variables if possible. We don't have the DSC module, so I can't use event structures to update that way. What I am hoping is that the data binding updates is event driven and therefore making it a lot more efficient than the polling I am currently doing.