BACnet protocol stack

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I'm looking for a open source BACnet protocol stack in C# dotNET

Tuhin Paul · Answer

Important Architecture Note When working with BACnet in .NET, you must understand the BACnet Stack Layers . Most open-source C# libraries focus on the Application Layer (handling objects like Analog Inputs/Binary Outputs) and use a UDP socket for the Network Layer (BACnet/IP). Recommendation for Developers If you are starting a new project today: Download the Yabe Source Code: Even if you don't use the GUI, the underlying Bacnet library included in that solution is the most stable and battle-tested C# implementation available. Target .NET Standard: Ensure the library version you pick supports .NET Standard so you can run your code on both Windows and Linux (via .NET 6/8). Check for "BTL Certification": Open-source stacks are rarely BTL (BACnet Testing Laboratories) certified out of the box. If your project requires formal certification for a commercial building, you may need to perform extensive testing or consider a commercial stack like Chipkin’s CAS BACnet stack which provides a C# wrapper.

Tuhin Paul · Answer

For C# and .NET developers, there are a few primary open-source options for implementing the BACnet protocol. While many "industry-standard" stacks are written in C, the .NET ecosystem has several mature wrappers and native implementations. 1. BACnet/IP Library (formerly bacnet.net ) This is arguably the most popular and widely used open-source BACnet stack for the .NET ecosystem. It is a native C# implementation, making it very easy to integrate into modern .NET Core or .NET 5+ projects. Repository: GitHub - Frédéric Chaxel / BACnet-stack-dotnet (Note: Different forks exist, but Chaxel's is the most referenced for Yabe). Key Features: Supports BACnet/IP , BACnet/Ethernet , and BACnet/MSTP (via serial port). Includes both Client and Server capabilities. Used as the backbone for Yabe (Yet Another BACnet Explorer), the most famous open-source BACnet tool. Best For: Most general-purpose .NET applications, desktop tools, and Windows services. 2. Yabe (Yet Another BACnet Explorer) While Yabe is technically a GUI tool for exploring BACnet devices, it is built entirely on the open-source C# stack mentioned above. Why it matters: If you want to see exactly how to implement the code, the Yabe source code serves as the ultimate "Reference Implementation." Source: Yabe on SourceForge 3. BACsharp This is another open-source framework specifically designed for the .NET initiative. It provides a structured application layer and network layer. Pros: Royalty-free and specifically object-oriented for C#. Cons: It hasn't seen as much recent community activity as the BACnet-stack-dotnet library used by Yabe. Source: BACsharp on SourceForge

BACnet protocol stack

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