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You can save and analyze the data that a device or code generates in a variety of ways. Viewing data in different formats can provide insight into trends or outliers in the data. What to Use An application ...

Locate or place one of the following analysis nodes on the diagram of a VI. Analysis FunctionDescription Amplitude Measurements Performs peak amplitude measurement. Curve Fit Finds the line that best represents ...

When looking for a problem in your code, you may have an idea of the general area where the problem exists. To help focus on this area, you can use a breakpoint to pause the VI at a specified point in ...

When the results of your application are not what you expect, you can use a set of tools to determine where errors occur within your code. Although errors are often detected automatically, sometimes your ...

After a loop completes a single iteration, sometimes you want to use the value of one of its calculations in the next loop iteration. You can use a shift register to pass data from the most recent iteration ...

By default, each loop iteration executes as quickly as possible based on the code inside the loop. However, you might want to control the rate at which a loop executes in order to specify a fixed time ...

On the Document tab, in the Behavior section, click Properties to access VI Reentrancy options for your subVI. In the resulting dialog box, select the Execution tab. Choose one of the following options: ...

To turn an existing VI into a subVI, use the icon editor to assign input and output terminals and to customize the appearance of the subVI node. What to Do Select EditIcon and connector pane to display ...

Loop timing refers to how long a loop takes to execute a single iteration. The amount and type of code a loop contains affects its execution speed. By default, each loop iteration executes as quickly as ...

Right-click the diagram of an existing VI and select Create New SubVI to add an empty subVI node to the diagram. This creates a new .gvi file and adds it to the project. This file corresponds to the subVI ...

What to Use Open/Create/Replace File A read or write node from the Storage palette category Close File What to Do Create the following diagram to programmatically open, write to, and close a text file. ...

Instead of creating the same code on a diagram multiple times, you can write code in a single location and use a For Loop to programmatically repeat it. For example, you might want to read a specific number ...

While working with an array of data, you might want to access individual elements within the array. Although you can use a combination of Array nodes to accomplish this task, the For Loop includes an auto-indexing ...

In some situations, you might know that you want to repeat an operation, but you do not know exactly how many times you want to repeat that operation. Instead, you know only that the operation should repeat ...

A loop is a programming element that executes the same code multiple times, or iterations. Types of Loops Loop Behavior Example Diagram For Loop Repeats the code inside the loop for a set number of iterations. ...

Implements an on-off controller. DAQExpress does not support FPGA devices Not supported in VIs that run in a web application action Action of the controller. Reverse0The controller is reverse-acting.Direct1The ...

Implements a P controller. DAQExpress does not support FPGA devices Not supported in VIs that run in a web application Algorithm Definition The following transfer function represents a P controller: C(s)=Kp ...

Implements a PD controller in the Academic form. DAQExpress does not support FPGA devices Not supported in VIs that run in a web application Algorithm Definition The following transfer function represents ...

Implements a PD controller in the Parallel form. DAQExpress does not support FPGA devices Not supported in VIs that run in a web application Algorithm Definition The following transfer function represents ...

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