Edge Detect Function Blocks

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LabVIEW 2009 Real-Time Module Help

Edition Date: June 2009

Part Number: 370622G-01

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Owning Palette: Function Blocks

Requires: RT Module. This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.

Use the Edge Detect function blocks to detect transitions on digital signals.

Palette Object	Description
Edge Detect	Detects rising edges on input 1 and falling edges on input 2. The output indicator pulses TRUE for one iteration when input 1 transitions to TRUE, when input 2 transitions to FALSE, or when both conditions occur simultaneously.
One Shot Falling with Input	Detects a falling edge, a transition from TRUE to FALSE, on the input signal. When a falling edge occurs, output is TRUE for one function block execution. The value of output remains FALSE until a new falling edge occurs.
One Shot Rising with Input	Detects a rising edge, a transition from FALSE to TRUE, on the input signal. When a rising edge occurs, output is TRUE for one function block execution. The value of output remains FALSE until a new rising edge occurs.