Package Contents Description
What’s in the file?
- The installation program
- A video showing how to install
- A video with additional details
Important:
If the file you download only has a “Read.txt” file inside, that means the software is broken. We need to upload it again.
What to do if that happens:
- Email us right away
- We will re-upload the files within 1 day
- We will email you when the new download is ready
About LOGO! Soft Comfort V8.4 Download
LOGO! Soft Comfort V8.4 Download is a compact controller engineering tool from Siemens. This release is used by panel builders, electricians and machine builders to program, simulate and document LOGO! logic modules for small automation tasks. On this page you get a complete, ready-to-run LOGO! Soft Comfort V8.4 package together with a step-by-step installation walkthrough.
Key Capabilities of LOGO! Soft Comfort V8.4 Download
- Function block and ladder diagram editing
- Integrated simulation mode before download
- Analog and digital function blocks including timers and comparators
- Project documentation and printout
- Archiving of projects with comments
- Transfer to the module over Ethernet or USB
System Requirements
- Windows 10/11 64-bit (Professional recommended)
- 8 GB RAM minimum, 16 GB recommended
- 5–10 GB free disk space depending on installed options
- 1920×1080 display or larger
Installation Notes
- Extract the downloaded archive with the password shown at the bottom of this page, using a recent version of WinRAR or 7-Zip.
- Run the installer as administrator and keep the default path unless your company standard requires otherwise.
- If a controller or robot connection will be used, allow the software through the Windows firewall when prompted.
- Temporarily disable antivirus and Windows Defender real-time protection during setup — installers that copy licensed components are frequently false-flagged.
- After installation, re-enable antivirus protection and add the program folder to the allowed list if your policy requires it.
Frequently Asked Questions
Does it run in a virtual machine?
Yes, the tool is lightweight and runs in any Windows VM.
Can I reuse old LOGO! programs?
Projects from earlier versions open after conversion; keep the original file for reference.
Is simulation included?
Yes, the built-in simulation mode runs the function chart with forced inputs before you touch hardware.
Is a license dongle required?
The software is licensed per installation with a simple activation; no dongle is needed.
Setup Complest
If you have problems installing, email us.
We can help you remotely and fix the problems.
Tips from Real Projects
A water-pump station builder replaced relay logic with LOGO! modules programmed entirely in the office: every station was simulated with its real timer values before installation, and the electrician only had to wire and download. Small controllers still deserve a simulated test.
Files are delivered on our partner site up-der.com — a free account is required for some downloads.
All files here are WinRAR files.
You must use WinRAR to open them.
Windows’ own unzip tool will not work.
Please download the newest WinRAR.