Learn More about OpenOpcUa

Learn More about OpenOpcUa

OpenOpcUa Learn More: this page provides a complete overview of the OpenOpcUa platform, including its Core Server, Client Library, VPI/VFI, Redundancy, Historical Access and Aggregates.

OpenOpcUa Learn More

OpenOpcUa is a complete and modern OPC UA platform designed to deliver stability, performance, and flexibility for industrial automation, IIoT, research, and enterprise integration.
This page gives you a deeper look at the OpenOpcUa platform, its architecture, and its capabilities.

Core Server

The Core Server is the foundation of the OpenOpcUa platform.
It provides a fully featured and high‑performance OPC UA implementation.

Stability & Reliability

OpenOpcUa 1.0.8.8 introduces major improvements ensuring consistent behavior under heavy industrial workloads such as:

  • Multiple VPIs running simultaneously
  • Large multi‑tag and high‑frequency update scenarios
  • Temporary VFI or storage unavailability
  • Numerous memory leak and robustness fixes

Performance Enhancements

  • Bulk write processing for improved throughput
  • Lower CPU and memory usage for large‑scale systems
  • Faster startup, even when archives or UDTs are partially initialized

Security

  • Migration to OpenSSL 3.5.3, with improved secure channel handling

Client Library

The OpenOpcUa Client Library provides stable and efficient OPC UA client capabilities.

Key Features

  • Improved reconnection and session handling
  • Asynchronous Read support
  • Better error management during communication faults
  • Support for String NodeIds containing spaces
  • Multiple stability and memory fixes

The Client Library is ideal for supervisory tools, test benches, middleware, and custom OPC UA applications.

VPI / VFI Ecosystem

OpenOpcUa integrates a complete data acquisition and storage ecosystem through VPIs (inputs) and VFIs (outputs).

VPI Highlights

  • Siemens S7
  • Modbus TCP / RTU
  • EtherNet/IP
  • OPC UA Client
  • MQTT JSON Pub/Sub

Each VPI benefits from improved performance, reconnection stability, and better logging.

VFI Highlights

  • High‑performance historical writes via VfiHistoryWriteEx
  • Improved offline buffering and error recovery
  • Enhanced support for PostgreSQL, SQL Server, CSV, and ValueInit

This modular design makes OpenOpcUa suitable for telemetry, SCADA connectivity, historians, and IIoT architectures.

Historical Access & Aggregates

OpenOpcUa 1.0.8.8 includes full support for OPC UA Historical Access, optimized for industrial‑scale archives.

Historical Access Improvements

  • Better handling of HistoryContinuationPoint
  • Optimized behavior when archives are incomplete or large
  • Faster bulk historical write operations

Supported OPC UA Aggregates

  • Average
  • TimeAverage & Total
  • Min / Max
  • Variance & StandardDeviation
  • Count
  • Interpolative
  • Vendor‑specific aggregates via LUA scripting

These capabilities make OpenOpcUa suitable for analytics, dashboards, and historian workloads.

High Availability & Redundancy

OpenOpcUa integrates mature High Availability and Redundancy mechanisms for industrial reliability.

Redundancy Features

  • Improved HA timers and synchronization mechanisms
  • Robust reconnection logic during failover
  • Efficient management of warm/cold restarts
  • Better handling of pending requests and HA write cycles

Operational Modes

  • RUNNING mode: at least one VPI or VFI configured
  • TEST mode: no active process modules

These mechanisms ensure stable behavior in redundant architectures or failover scenarios.

Why OpenOpcUa Matters for Industrial Architecture

OpenOpcUa Learn More also means understanding why this platform has become a strong foundation for industrial OPC UA projects. The combination of the Core Server, the Client Library, and the VPI/VFI ecosystem offers a unified approach that simplifies development, testing, and long‑term maintenance. The platform is built to support real‑world industrial conditions where reliability, determinism, and long‑term stability are essential. Its modular architecture allows integrators to start small with basic OPC UA features and progressively adopt advanced capabilities such as Historical Access, Aggregates, and Redundancy when the project grows or moves toward production.

Unlike limited OPC UA wrappers or lightweight SDKs, OpenOpcUa includes complete implementations of critical OPC UA concepts. This allows engineers and architects to evaluate performance, validate data models, and test interoperability with external systems using the exact same features they will rely on later in production. Whether teams work on factory automation, telemetry, IIoT, or data acquisition pipelines, OpenOpcUa provides the reliability and clarity expected from an industrial platform, while remaining accessible for learning, prototyping, and architecture studies.

Platform Maturity

OpenOpcUa 1.0.8.8 consolidates more than a year of improvements across:

  • Core Server
  • OPC UA Stack
  • Client Library
  • VPI / VFI
  • High Availability
  • Redundancy
  • Historical Access & Aggregates

This makes it the recommended version for:

  • Evaluation
  • Prototyping
  • Pre‑production
  • Industrial deployment

Next Steps

To continue your OpenOpcUa journey:

  • Visit the Get Started page
  • Download the demo package
  • Explore the configuration files
  • Contact 4CE INDUSTRY for training, support, or architecture guidance

OpenOpcUa provides a modern and reliable foundation for any OPC UA project — from learning to full‑scale industrial deployment.

A Consistent and Evolving OPC UA Platform

Because OpenOpcUa evolves continuously, staying aligned with the OPC UA specification and industrial needs, the platform offers a long‑term path for teams planning multi‑year projects. By exploring OpenOpcUa Learn More, users gain a deeper understanding of how the platform grows, reinforces stability, and integrates new industrial capabilities over time.

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