RTSI Input and Output

The following sections explain the usage of RTSI for input and output signals.

Position Breakpoints Using RTSI

You can use the Select Signal VI or function to route position breakpoints using one of the RTSI lines. In this case, the motion controller triggers the external device at a given position, as shown.

Note  A breakpoint across RTSI always generates an active high pulse of 200 ns duration.

Encoder Pulses Using RTSI

You may need to trigger the external device to acquire data every encoder phase or on an encoder index pulse, as shown.

Software Trigger Using RTSI

You can use the Set I/O Port MOMO VI or function to write directly to the RTSI lines to trigger other devices, as shown.

High-Speed Capture Input Using RTSI

When the RTSI line receives the trigger from a data or image acquisition device, the corresponding high-speed capture occurs, as shown.