Python:GUIDE COMMUNICATION SIMENS S7-1200 PLC TO PYTHON WITH PYTHON-SNAP7

What is Python?

Python is a programming language widely used in web applications, software development, data science, and machine learning (ML). Developers use Python because it’s efficient, easy to learn, and can run on a variety of platforms. Python software is free to download, integrates well with all types of systems and speeds up development.

What are the benefit?

The benefits of Python include:

• Developers can easily read and understand a Python program because the language has the same basic syntax as English.
• Python improves the productivity of developers because compared to other languages, they can use fewer lines of code to write a Python program.
• Python has a large standard library that contains many lines of reusable code for almost any task. As a result, developers won’t need to write code from scratch.
• Developers can easily use Python with other popular programming languages like Java, C, and C++.
• The active Python community includes millions of enthusiastic developers around the world. If you run into problems, you’ll be able to get quick support from the community.
• There are many useful resources on the Internet if you want to learn Python. For example, you can easily find developer videos, tutorials, documentation, and guides.
• Python can be used on many different computer operating systems, such as Windows, macOS, Linux, and Unix.

With the benefits brought from Python, Today I will connect S7-1200 Siemens with Python through python-snap7 library

Install

To install python, go to the Download Python page | Python.org to download the latest version and run the exe file.

Choose Customize installation.

Choose as shown and then next.

Cuối cùng chọn Install để cài đặt vào máy nhé.

To check if the installation is successful, go to CMD and type python -V and as shown below.

Install library

Here I use Visual Studio Code to run. Go to the terminal and type the command:

pip install python-snap7

If there is a succsessfully message, then it was successful

Program

Program on PLC Siemens S7-1200

Here, I only read data from Datablock S7-1200.

Above is a small article about python and snap7 language to S7-1200. Hope the article will be useful to you. Thank you!

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Reference source:

• https://python-snap7.readthedocs.io/en/latest/installation.html
• https://aws.amazon.com/vi/what-is/python/
• https://www.python.org/