Python combined with LabVIEW programming (1)

xutong

Python combined with LabVIEW programming (1) [Copy link]

Python combined with LabVIEW programming (1)

Hi, uu, good evening! Where did you go for National Day? How do you feel about your first week at work?

At the beginning of the text, it is well known that Python is a very useful tool, and LabVIEW is also a very useful tool, especially in making GUI. Python also has many libraries for making GUI, such as the built-in Tkinter, Pyqt, NiceGui, etc. NiceGui can directly turn the application into a web program, as long as it is under the same router, it can be used, and it is very convenient to cross-platform. For example, if the program is running in the laboratory in the company, it is more convenient for you to occasionally check where the program is running while sitting in the office. However, it is still very troublesome to make a beautiful layout with NiceGui. If I want to adjust the X-axis and Y-axis to my comfort, it will take a lot of time. LabVIEW is much easier, and it is done by just pulling the control. Moreover, LabVIEW can be combined with Python, Python processing, and LabVIEW making the interface. I am not very familiar with LabVIEW, but I am slightly familiar with Python, so I thought of combining it in this way to get things done.

~~Preparation~~

1. Download LabVIEW Community Edition
2. Download the corresponding Python 32/64 bit version according to LabVIEW

~~Begin~~

Figure 1: Create a new blank VI

In LabVIEW, VI (Virtual Instrument) is the basic program unit of LabVIEW.

After the new VI is created, two boxes will be generated, one is the front panel (Front Panel) and the other is the program flowchart (Block Diagram) as shown in Figure 2 below. If you accidentally close the program flowchart, you can use the shortcut key CTRL+E to call up the program flowchart.

Figure 2: Front Panel and Block Diagram

The front panel is the user interface of the VI, similar to the front panel of a traditional instrument. Users can place various input controls (such as knobs, buttons, text boxes, etc.) and output display controls (such as gauges, charts, indicator lights, etc.) on the front panel. These controls are used to interact with users. Users can set parameters through input controls and view program running results through output display controls. The flowchart is the source code of the VI. In the flowchart, users can use various functions, subVIs, and structures (such as loop structures, conditional structures, etc.) to build program logic. The code in the flowchart transfers data through wires, and the wires indicate the direction of data flow between different nodes (functions, subVIs, etc.).

Let's first write Hello World in Python and then display it on LabVIEW. The Python program uses a function to return a Str (string) of HelloWorld. The Python code is as follows:

def HelloWorld(): return 'HelloWorld'

LabVIEW block diagram:

Figure 3: Block Diagram

LabVIEW front panel:

Figure 4: Front Panel

Workflow:

1. Open Python
2. Execute the HelloWorld function
3. The return value is displayed using String Indicate

If you don’t know how to configure the module, you can press Ctrl+H and click the module to display it, as shown in Figure 5.

Figure 5: Module Help

It's a bit late today, so I'll stop here for now and continue later.

xutong

python combine LabVIEW.vi (6.41 KB, downloads: 0)

2024-10-16 23:09 上传

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LabVIEW Add-ons

qwqwqw2088

Python combined with LabVIEW programming,

It sounds more fun.

Can you introduce the compilation environment?

xutong

qwqwqw2088 posted on 2024-10-17 07:28 Python combined with LabVIEW programming, it sounds interesting, can you introduce the compilation environment?

Pycharm and Vs code

se7ens

LabVIEW has been upgraded and can be used together with programming software. It is so powerful.

tobot

se7ens posted on 2024-10-17 17:13 Labview has been improved again. It can be combined with programming software. It’s great

I remember there were java and tcl supports before

Verifone

Interesting, this combination of programming is a good choice, graphical interface plus command programming