While I couldn't find an official free download link for Logo Soft Comfort V5.0 from Siemens, here are a few alternatives:
For professional use or compatibility with newer hardware, purchase the current Siemens LOGO! Soft Comfort license. It is highly affordable compared to enterprise PLC software (like TIA Portal) and includes backwards compatibility for older programs created in V5.0. How to Open Old V5.0 Files logo soft comfort v5.0 free download
While newer versions (such as V8.x) are currently supported by Siemens, some users specifically search for V5.0 to support older hardware. 1. Official Siemens Support While I couldn't find an official free download
Quick selection and placement of digital, analog, and special logic functions. and special logic functions.