Windows 7 Professional or Windows 8.1 Professional (32-bit or 64-bit).
SoMachine 4.1 is built on the platform and supports all IEC61131-3 programming languages. Notable features include: SOMNACS41 - SoMachine Software V4.1 SP1 - DVD format
Security is another aspect. Downloading from the official source is safer. Users might be concerned about malware. Also, the SHA1 or SHA256 checksums might be provided to verify the file's integrity. Maybe mention that. Also, the file size could be large, so internet speed or download time considerations.
