11 Aug 2025

This article discusses in depth how to use the pyads library to efficiently process PLC real-time data notifications. For high concurrency and large data volume scenarios, we propose and elaborate on class encapsulation-based solutions to avoid global variables and achieve clearer state management and data accumulation. At the same time, the article also introduces key techniques for optimizing data parsing performance, including batch processing using raw byte data and NumPy, aiming to help developers build a robust and high-performance PLC data acquisition system.

13 Aug 2025

This tutorial explores how to efficiently and Pythonically process real-time, large-scale notification data from PLCs in PyADS applications, avoiding the use of global variables. By introducing a class-based callback function management model, the article elaborates on how to safely integrate callback data into application state and provides strategies to optimize data conversion performance, especially for high-throughput data acquisition scenarios.

16 May 2025

The .xsm file is an XMLSchema file that defines the structure and constraints of an XML file. 1) Use a text editor such as Notepad or VisualStudioCode to open the .xsm file. 2) For advanced features, use OxygenXMLEditor or AltovaXMLSpy for Schema verification and autocomplete. 3) Through Python's lxml library, you can verify whether the XML file complies with Schema, and use streaming processing to optimize the processing performance of large files.

21 Oct 2024

Efficient JSON file processing is important in modern applications. If JSON file is large in size, we need to handle it properly to avoid heap out of memory error and heavy resource consumption. GSON is one of the best library available in Java to p

17 Apr 2025

I'm having a tricky problem when developing a PHP project that handles file uploads: How to map the MIME type of a file with its extension exactly? This problem not only affects the identification of files, but also leads to confusion in data processing. After trying multiple methods, I found the fileeye/mimemap library, which not only solved my problem, but also greatly improved the processing efficiency.

02 Apr 2025

Converting XML to images involves the following steps: Selecting the appropriate image processing library, such as Pillow. Use the parser to parse XML and extract font style attributes (font, font size, color). Use an image library such as Pillow to style the font and render the text. Calculate text size, create canvas, and draw text using the image library. Save the generated image file. Note that font file paths, error handling and performance optimization need further consideration.