All about FSS Files

The FSS file type is primarily associated with FactoryTalk Studio.

FSS	File extension: FSS
	File type:	project file

What is an FSS file

FSS files mostly belong to FactoryTalk Studio.

The FSS file is a project file used in industrial control systems. It stores settings, layout data, and configuration details for human-machine interface (HMI) designs. These files are built on a Microsoft Compound File structure, which allows multiple data streams to be embedded in a single file.

Key Usage Details:

HMI Design: They hold project and configuration data for systems like FactoryTalk Studio, letting engineers design and manage control panels.

Alternate Application: Some files follow a similar structure for systems such as Wonderware InTouch HMI, serving a related role in interface design.

Additional Variant: In other cases, the file may represent a Foss Electric Sample Set, used for sample management in electrical projects.

FilExt.com tips: These files require the corresponding software to open and edit. For example, FactoryTalk Studio from Rockwell Automation manages these files. Direct editing in a basic text editor is not advisable due to the binary format and embedded streams.

How do you open FSS files?

You need a suitable software like FactoryTalk Studio to open an FSS file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your FSS file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a FSS file directly in the browser:. Just drag the file onto this browser window and drop it.

Online FSS Text Viewer

Choose your .fss file to analyze

or drag and drop it here

Online File Viewer

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FSS file extension format:

If you can determine the file format, the associated program can also be determined. Often, the file format can be deduced from the file extension or the initial bytes (called the signature). File extension, signature and file format must match; otherwise errors will occur when the file is opened. Exact knowledge of the format is therefore important in order to solve problems occurring in files. In the following you will find our evaluation of the FSS files:

The FSS file extension is rarely used and includes different formats for different programs. The file formats most commonly found in FSS files are:

• 25% of all FSS files utilize the Microsoft Compound File format, known also as OLE2 Compound Document format or Composite Document File format. Microsoft Compound File is a complex container format used by some versions of Microsoft Office and other Windows-centric applications. It has features similar to those of a filesystem format. Header signature for the CFB format with 8-byte Hex value D0CF11E0A1B11AE1 (which looks like "DOCFILE"). The file contains sections that are named something like Config, Data, HdrCmmtdoc, Logic, Logicdoc, RIDMgr, Addrdoc, General and CrossRef. FSS files are between 150 KB and 960 KB in size.
• 15% of all FSS files use the same file format, which can be identified by the letters "Fo" at the beginning. They consist of illegible, cryptic characters. FSS files can be up to 3 MB in size, but are often around 55 KB - 2 MB. The files contain the following words: Foss Electric Sample Set and FormScapePersistVer2BinaryFormat.

All other FSS files (60%) have different formats, the following 5 formats can be found: XML, SCDHD and items. Tagged as lcpdata, wacom, docx or xlsx. Just click the "Choose your .fss file to analyze" button on this page to find out what your FSS file is.