NexAIoT OPC UA Server

Main Features
  • Web-based IoT utility
  • Multi-user Authentication by Windows logon and Certification

  • Endpoint Protocol types: UA TCP & HTTPS

  • Support Max 500 Client Connections

  • Flexible Node Configurator

  • Full Security Protection for Server Authentication


The OPC Unified Architecture (UA) is a platform independent service-oriented architecture that integrates all the functionality of the individual OPC Classic specifications into one extensible framework. It is a machine to machine communication protocol designed for use in the industrial automation industry. OPC UA features cross-platform interoperability, unified access, standardized communication, and security.


NexUA is NexAIoT OPC UA Standard Server, it consists of two parts, OPC UA Service & Configure Utility, and they are well developed for running on different operation system including Yocto Linux, Yocto, Windows 7, Windows 8.1 and Windows 10.


NexUA plays a key role as a communication gateway allowing OPC UA clients to access HMI or PLC data by subscribing to tags to receive real-time updates.


OPC UA Server is an OPC UA standard server package with the focus on communicating with systems for data collection based on the foundation of the infrastructure necessary for information integration where users can model their complex data into an OPC UA namespace, taking advantage of the rich service-oriented architecture of OPC UA. Configure Utility consists of a configurable GUI for parameters and settings as well as an OPC UA standard server service to act as a hub to collect data and feed its OPC UA client applications to help you with your OPC UA system development.


Windows Utility Server Status:
List current server information
Configurable server operations, there are start/stop and restart the server
Endpoints (UA TCP protocol, HTTPS protocol):
Configurable security modes
- Supports configurations including Anonymous, username/password, and encrypted username/password
- Configurable security policies
- Supports Basic128Rsa15/Basic256/Basic256Sha256
Manageable user access control
Configurable user verification options
Supports Windows logon users
Supports authenticate with certification
Supports anonymous user
Node Config:
Supports alarm notification
Supports historical data logging
To start or stop historical data logging
Import/Export server's address space to/from XML file
Product key activation
Login password update

NexUA Server Server Authentication:
OPC UA requires a bidirectional authentication of the Client and Server applications with X.509 application instance certificates during the establishment of a secure communication connection
Multi-user Authentication:
Windows logon and certification
Server Connection Protocols: UA TCP and HTTPS
Client Connections: Max to 500 connections
Node Configuration In: OPC UA, every entity in the address space is a node, to uniquely identify a Node, each node has a NodeId

OS & SW Win10 32bit
Win10 64bit

Ordering Information

NexUA OPC UA Server Standard
Part Number 
NexUA OPC UA Server Standard

NexUA OPC UA Professional
Part Number 
NexUA OPC UA Server Professional

Part Number 
NexUA OPC UA Server Upgrade Standard to Professional


Upload Date File Name Version OS Type Description Download
2021/04/28 NexUA User Manual Windows 10 PDF 7.1 MB
2021/04/28 NexUA Model Maker User Manual Windows 10 PDF 4.2 MB
Upload Date File Name Version OS Type Description Download
2021/04/28 NexUA Model Maker 1.00.009 Windows 10 35.7 MB
2021/04/08 NexUA Server_2.01.010-x64 Windows 10 49.6 MB
2021/04/08 NexUA Server_2.01.010-x86 Windows 10 50.8 MB
Upload Date File Name Version OS Type Description Download
2021/11/18 [Case Study] AS-Sewage All OS PDF JMobile is an HMI SCADA and monitoring software that supports the standard OPC UA Client communication protocol. NexUA's OPC UA server complies with the CDA specifications, and its data structure is customizable. NexUA can upload sewage environmental safety data to the "CDA Sewage Sewer Data Integration Cloud Platform" through OPC UA and allows the management to integrate information such as sludge treatment, blower data, biological treatment, and dosing treatment. Ultimately, the data collection, statistics, analysis, and big data intelligent calculations are executed to produce more reclaimed water for high-tech and general industrial use. The benefits include achieving automated warnings and energy savings, Long-life equipment, and other goals. 1 MB