Zelio Soft 2 v5.4.0: The Complete Guide to Downloading and Getting Started
As of May 2026, the official software is available as a free download from the Schneider Electric Download Center. While V5.4.0 is a stable and widely used release, newer versions like V5.4.2 and V5.4.3 are also available for improved compatibility with modern operating systems. File Name: ZelioSoft2_V5_4_0.exe File Size: Approximately 171.9 MB Release Date: April 06, 2021 License: Free Top Features of Zelio Soft 2
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If a relay has "read protection" enabled, V540 cannot upload the logic. However, you can "Initialize" the memory (warning: erases program). To avoid this, always keep a .zls backup of your source code. Zelio Soft 2 v5
| Component | Minimum | Recommended | |------------------------|----------------------------------|--------------------------------| | OS (32‑bit) | Windows XP SP3 / Windows 7 | Windows 7 Professional | | OS (64‑bit) | Windows 7 (may work with caution)| Windows 10 (use XP/7 VM) | | CPU | Pentium 1 GHz | Core 2 Duo 2 GHz+ | | RAM | 512 MB | 1 GB+ | | Disk space | 300 MB | 500 MB | | Communication ports | RS-232 (COM) | USB-to-serial adapter (FTDI) | | Display resolution | 1024×768 | 1280×1024 |
In this guide, we’ll cover everything you need to know about finding a reliable download, the key features of version 5.4.0, and how to get your first project up and running. What is Zelio Soft 2? : Free of charge
ZelioSoft2 (V5.4.0) programming software | Schneider Electric
Note: Windows 10/11 64‑bit is not officially supported. Use a virtual machine with Windows 7 32‑bit for reliable operation.