Table Of Contents

Feedback Node (Reverse) (G Dataflow)

Last Modified: January 9, 2017

Stores data from one execution or loop iteration to the next.

This node operates similarly to shift registers in loops. The node stores data when the loop completes an iteration and then sends the stored data to the next loop iteration. The next iteration reads the data, writes a new value to the data, and sends it through the loop again. This process continues until the loop execution completes.

By default, the node stores data from only the previous execution or iteration. However, you can configure the node to store n samples of data by delaying the output of the node for multiple executions or iterations. If you increase Delay to more than one execution or iteration, the node outputs only the initial value until the delay you specify is complete. The node then begins to output the stored values in subsequent order. The number on the node represents the number of delays you specify.

connector_pane_image
datatype_icon

input

The data to be stored and sent to the next execution or iteration.

datatype_icon

initial value

Initial value for the first execution or loop iteration.

If you do not wire a value to initial value, the node uses the default value for the data type.

datatype_icon

output

The data stored from the previous execution or iteration.

Resolving Illegal Cycles

You can use the Feedback Node to resolve illegal cycle errors. Insert a Feedback Node into the cycle to resolve the error.

Where This Node Can Run:

Desktop OS: Windows

FPGA: All devices (only within an Optimized FPGA VI)


Recently Viewed Topics