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OPC UA Server Simulator Overview

Why use OPC UA Server Simulator?

  • Free utility that emulates an OPC UA server
  • Simulates both real-time and historical data
  • Supports OPC UA Data Access (DA) and Historical Access (HA) models
  • Allows OPC UA clients to connect, browse, and monitor simulated data
  • Easy CSV-based tag configuration
  • Ideal for testing, development, and training environments
OPC UA Server Simulator architecture diagram: simulated real-time and historical OPC UA data

OPC UA Server Simulator Features

Connectivity and Protocol Support

  • Support of multiple connections with OPC UA Clients  
  • Support of UA TCP and HTTPS transport protocols  
  • Support of Binary message encoding  

Security and Authentication

  • Support on none security mode 
  • Support of none security policy  
  • Support of anonymous authentication mode 
  • Support of UserName authentication mode 

Client Interactions

  • Support of OPC UA DA synchronous and asynchronous client read/write requests 
  • Support of OPC UA HDA client read and update requests  

Data Simulation and Tag Management

  • Real-time data simulation for user-defined set of tags with different access rights 
  • Historical raw data simulation for user-defined set of tags 

User Interface and Configuration

  • Graphical user interface allowing users to:  
  • Monitor current sessions  
  • Configure ports 
  • Configure user accounts 

Logging and Runtime

  • Log event traceability  
  • 48 hours runtime period 

Free vs. Full Edition – Which one Fits Your needs?

The OPC UA Server Simulator is available in two editions to match different testing and development requirements. 

While the OPC UA Server - Free Edition is perfect for basic simulations and quick tests, the OPC UA Server Simulator – Full Edition is designed for uninterrupted, professional use in more demanding environments. 

See the comparison below to help you choose the version that is right for you: 


Feature OPC UA Server Simulator – Free Edition OPC UA Server Simulator – Full Edition
Simulate Real-Time Data ✓✓
OPC UA Data Access Model Support ✓✓
OPC UA Historical Access Support ✓✓
CSV-Based Tag and Simulation Configuration ✓✓
Use in Testing and Development ✓✓
No Usage Interruption ❌ 48 hours runtime ✓ Full, uninterrupted usage
Support and Maintenance ❌ Level 1 support ✓ Suitable for professional and industrial environments
Resources & Documentation

OPC UA Server Simulator Resources

User Guide

Step-by-step installation and configuration guide

Related Blogs

See the OPC product in action with real-world examples

Frequently Asked Questions

Yes. The Free edition is completely free to use and distribute. It is ideal for testing, development, or learning purposes, but it comes with a 48-hour runtime limit and may include usage interruptions. 



The full edition offers uninterrupted use, making it suitable for more advanced testing and integration scenarios. Both editions support real-time and historical data simulation, OPC UA DA and HDA models, and CSV-based configuration. 


Tag configuration is done using  simple CSV files for the server address space and data simulation. This allows for quick setup and easy updates without complex scripting or coding. 


The simulator supports multiple concurrent connections with OPC UA clients, allowing for comprehensive testing in multi-client environments. 


Edit the CSV tag configuration file, then restart the simulator to load the new configuration. Refer to the user guide for the detailed instructions.