Officially supports Windows XP/Vista, Linux, and Mac OS X.
Use Function Block Diagram (FBD) or Ladder Diagram (LAD) logic.
The most secure way to get the software is through the Siemens Industry Support Portal . They often provide upgrades and demos . logo soft comfort v6.1 full version download
If you already own an older full version (like V3 or V5), you can often download a free Service Pack or upgrade to V6.1 directly from the Siemens website.
Some automation hardware suppliers like RS Online still provide documentation and potentially legacy stock, but be wary of "cracked" versions from unofficial sites as they often contain malware. System Requirements & Modern Compatibility Officially supports Windows XP/Vista, Linux, and Mac OS X
If you must use V6.1 on a modern PC, it is highly recommended to run it inside a Virtual Machine (like VirtualBox) using Windows XP. The Better Alternative: Upgrade to V8.4 or V9
Test your logic on your PC without needing the physical PLC. They often provide upgrades and demos
Download and upload programs via a special serial or USB PC cable. How to Download the Full Version (Legally)
Unless you are strictly prohibited by hardware constraints, you should consider downloading the latest version of LOGO! Soft Comfort. LOGO! Soft Comfort V6.1 Software - SiePortal - Siemens