Sucosoft S40 Programming Software [upd] Download Site

Sucosoft S40 is the central IEC 61131-3 compliant programming software for Moeller (now Eaton) PS4 and PS416 series PLCs

Software Updates (V5.0x): You can find the latest version (V5.05 and V5.06) and older iterations (V2.04 through V5.04) in the Eaton Automation Software Update Archive. Sucosoft S40 Programming Software Download

Step 4: Install USB Communication Drivers

• During installation, a pop-up may appear to install Silicon Labs CP210x or FTDI USB drivers. Click “Install.”
• If prompted by Windows for driver approval, select “Always trust software from Suco ES GmbH.”

Latest V5.06 Update: The specific setup for the final V5.06 patch is hosted in the Eaton S40 V5.06 Archive . Sucosoft S40 is the central IEC 61131-3 compliant

Cons:

Network Programming: Enables central programming and diagnostics for decentralized systems, allowing all controllers in a network to be managed from a single workstation. During installation, a pop-up may appear to install

3. “Driver Installation Failed – Code 52” (Windows 10/11)

Cause: Windows driver signature enforcement blocks non-certified drivers (rare with Suco, but possible for legacy adapters).
Solution: Restart Windows, enter Advanced Startup Options (Shift + Restart), select “Disable Driver Signature Enforcement”, then reinstall the drivers.

Note for Windows 11 Users: Sucosoft S40 runs well on Windows 11, but you may need to install legacy drivers for the USB-to-serial converter used by Suco adapters. Disable driver signature enforcement temporarily if prompted.