You can use shared variables to read and write data among VIs in a project or across a network. Shared variables are configured software items that can send data between two locations in a block diagram that cannot be connected with wires, between two VIs running on an RT target, or between two VIs across a network running on different targets. The Real-Time Module adds a real-time FIFO to the shared variable. By enabling the real-time FIFO of a shared variable, you can deterministically share live data without affecting the determinism of VIs running on an RT target.