CODESYS 4

Product Description

CODESYS 4 is the new, web-based development environment for programming programmable logic controllers in accordance with IEC 61131-3. Users work directly in a modern browser and are not tied to any particular operating system. Existing libraries from the CODESYS Development System remain compatible and can continue to be used in parallel throughout the lifecycle – protecting existing know-how and investments.

With its open project storage, CODESYS 4 integrates seamlessly into modern software development workflows: version control systems, diff tools, and CI/CD pipelines can be used directly, and dependencies are managed reliably and transparently. An Extension Platform allows the environment to be extended modularly with additional functionality.

CODESYS 4 adapts flexibly to the way you work – from local single-user use and collaborative team development on a multi-user server through to full automation in scripts and CI/CD pipelines. This makes engineering more efficient, more collaborative, and future-proof throughout the entire product lifecycle.

For more information, visit www.codesys.com.

Requirements

Programming system	-
Runtime system	CODESYS Runtime V3.5 SP19 and newer
Supported platforms	Windows x64 Debian Linux x64 Debian Linux ARM64
Hardware requirements	RAM (available): 3 GB minimum, 8 GB recommended Disk space (available): 4 GB minimum Linux values refer to single-user operation
Supported browsers	Tested with current versions of Chromium based browsers (Chrome, Edge) and Mozilla Firefox
Additional requirements	Windows: .NET Desktop Runtime 8.0 and ASP.NET Core Runtime 8.0 Linux amd64: aspnetcore-runtime-8.0 (>= 8.0.30) via apt Linux arm64: ASP.NET Core Runtime 8.0 (>= 8.0.30) via install script (no Debian package available)
Supported device descriptions	CODESYS Control for Raspberry Pi 64 SL CODESYS Control RTE V3 CODESYS Control Win V3 CODESYS Control for Linux ARM64 SL CODESYS Control for Linux ARM SL CODESYS Control for Raspberry Pi MC SL
Restrictions	Application projects need an explicit conversion step between CODESYS Development System 3 and CODESYS 4 Certificate authentication and TLS encryption for PLC communication are not supported yet Multi-user server operation (Linux) requires an external reverse proxy; recommended only in secure networks Windows installer: local desktop use only, no server Touch screen support is limited; small screens are not supported
Licensing	No license is required.
Required accessories	-

Support

No Support

Technical support is not included with this product. To obtain technical support, please purchase a CODESYS Support Ticket.

For general error messages or pre-sales inquiries, please use the "My Question" contact form directly, which can also be used without logging in. A list of alternative support resources can be found in the support section of the CODESYS Group website.

Supplier

CODESYS GmbH

A member of the CODESYS Group

Memminger Straße 151
D-87439 Kempten
Germany

Additional Downloads

Versions

Version History

Version	Windows (.msi)	Linux AMD64 (.deb)	Linux ARM64 (.deb)	Release Notes	Release Date
1.0.0.0	Windows x64 (.msi)	Linux AMD64 (.deb)	Linux ARM64 (.deb)	-	24.09.2026