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open62541: Open Source OPC UA (IEC 62541) Library in C
Open source implementation of OPC UA (OPC Unified Architecture) aka IEC 62541 licensed under Mozilla Public License v2.0. Provides a flexible and robust stack for industrial automation and IoT applications.
C
Added on 2025年6月6日2,808
Stars1,318
ForksC
LanguageProject Introduction
Summary
open62541 is a full-featured open source C implementation of the OPC Unified Architecture (OPC UA) standard. It provides a robust, flexible, and lightweight stack suitable for various platforms, from embedded systems to enterprise servers, enabling secure and interoperable communication in industrial and IoT settings.
Problem Solved
Traditional industrial communication protocols often lack interoperability, security, and scalability. OPC UA addresses these issues, but commercial stacks can be costly and proprietary. open62541 provides a cost-effective, open, and cross-platform solution for implementing secure and interoperable industrial communication.
Core Features
Client/Server Functionality
Supports both OPC UA Client and Server roles, allowing flexible system architecture design.
Core OPC UA Services
Includes support for essential OPC UA features like Data Access, Methods, Events, and Address Space browsing.
Resource Efficient
Designed for low resource environments, making it suitable for embedded systems.
Built-in Security
Provides security features like authentication, authorization, and encryption based on OPC UA Security models.
Tech Stack
C
C++
CMake
OpenSSL (for security)
Use Cases
open62541 is utilized in various scenarios where secure and standardized data exchange is required across different vendors and systems.
Scenario 1: Device Communication in Factory Automation
Details
Implementing OPC UA Servers on factory floor devices (PLCs, sensors, robots) to expose data and functionality in a standardized way to higher-level systems.
User Value
Enables seamless vertical integration from devices to enterprise systems, enhancing data accessibility and interoperability across diverse equipment.
Scenario 2: Data Acquisition for Monitoring & Control Systems
Details
Developing OPC UA Clients for SCADA, HMI, or analytics platforms to aggregate data from multiple OPC UA Servers and visualize or process it.
User Value
Simplifies connecting to and collecting data from a wide range of industrial assets, reducing development time and integration costs.
Scenario 3: Industrial IoT Gateways
Details
Building secure data gateways that translate data from legacy protocols to OPC UA for cloud connectivity or modern local networks.
User Value
Facilitates secure and standardized communication between operational technology (OT) and information technology (IT) domains.
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