OPC .NET API Source Code 2.0

OPC .NET API Source Code by OPC Foundation

OPC .NET API Source Code is a managed .NET implementation from the OPC Foundation that makes it easier for developers to build industrial automation applications that communicate with OPC Classic servers. By providing a consistent, object‑oriented API in C#, it abstracts the complexity of COM/DCOM and marshaling, so you can focus on application logic rather than low‑level protocol details.

Key features:

• Managed .NET libraries for building OPC clients targeting OPC Classic specifications such as Data Access (DA), Alarms & Events (AE), and Historical Data Access (HDA)
• Clean, strongly typed API surface designed for C# and the .NET Framework
• Full source code for transparency, debugging, and extensibility
• Sample projects and reference implementations to accelerate onboarding
• Utilities and helpers for connection management, subscriptions, browsing, and data conversion
• Documentation and comments that clarify best practices and common patterns

Typical use cases:

• SCADA, HMI, MES, and historian integrations that need reliable access to real‑time and historical plant data
• Bridging .NET applications to existing OPC Classic systems without writing COM interop code
• Rapid prototyping and education for teams adopting OPC in .NET environments

What’s included:

• Source code for the OPC .NET API libraries
• Sample client applications demonstrating DA/AE/HDA interactions
• Build files and solution/projects for Visual Studio and the .NET Framework
• Developer documentation and inline code comments

This package is intended for developers who want a robust, supported path to integrate OPC Classic connectivity into .NET applications with clear, maintainable code and reference examples.

OPC .NET API Source Code is developed by OPC Foundation. The most popular version of this product among our users is 2.0.