Right-click it to verify that the service is running. If you plan to connect via serial (RS-232), Ethernet (TCP/IP), or CANbus, this gateway must run continuously in the background. Best Practices for Legacy Project Management
Choose your installation path. Recommendation: Use the default path C:\Program Files (x86)\3S Software\CoDeSys V2.3\ .
The general process to attempt a download through official channels is as follows: codesys 2.3.9 download
Because the official download portal has removed V2.3 archives, you have two primary options:
Once you have obtained the installer file, the installation process for CODESYS 2.3.9 is relatively straightforward, though it differs from the modern CODESYS Installer used for V3.5. Right-click it to verify that the service is running
The CoDeSys Gateway Server handles the communication between your PC and the PLC. Ensure your Windows Firewall does not block GatewayDDE.exe or GatewayService.exe . Step-by-Step Installation Guide
CODESYS V2.3 remains one of the most widely deployed industrial automation software suites in the world. Despite the widespread adoption of the modern CODESYS V3 platform, thousands of manufacturing plants, utility systems, and specialized machines still rely on legacy hardware that requires the older V2.3 architecture. Ensure your Windows Firewall does not block GatewayDDE
Before you attempt to install V2.3.9, ensure that your computer meets the necessary specifications. Because this is a 32‑bit application, you will need to run it on a 32‑bit operating system or on a 64‑bit OS that provides 32‑bit compatibility (most Windows versions do). The official minimum and recommended requirements are:
I can point you toward the specific or drivers you'll need for your hardware.