Prosys OPC UA Modbus Server

Prosys OPC UA Modbus Server is simple to configure and fast to deploy, providing secure access to your Modbus devices in minutes.

OPC UA Modbus Server supports Modbus communication both over TCP/IP and serial port communication.

Prosys OPC UA Modbus Server context diagram

Securely push data from legacy devices to the cloud!

When Prosys OPC UA Modbus Server is deployed together with ogamma Visual Logger for OPC or Prosys OPC UA Historian, you can collect data from legacy devices using Modbus connections, and then store it in various databases. Those databases can be located not only on-premises but also in the cloud!


Secure Your Data Communications

Information security is built-in to OPC UA communications, allowing you to maximize security by using Prosys OPC UA Modbus Server as a gateway to all your Modbus devices.

Cross-platform Compatibility

Take advantage of the cross-platform compatibility of Prosys OPC UA technology and deploy Prosys OPC UA Modbus Server either on Windows or Linux - including headless devices, such as Raspberry Pi.

New Integration Possibilities

Because OPC UA and Modbus are vendor-independent communication standards, Prosys OPC UA Modbus Server enables easy integration of numerous systems from different vendors.

Ready for the Industrial Internet and Industry 4.0

Easy, reliable, and secure data communications is essential for system integration and also for Industrial Internet of Things (IIoT) and Industry 4.0 solutions. Prosys OPC UA Modbus Server has been designed to be one of the key building blocks when you develop your total system starting from sensor data.

Certified OPC UA Compliant by the OPC Foundation

Prosys OPC UA Modbus Server is certified by the OPC Foundation to be OPC UA 1.02 compliant. The OPC Foundation’s Certification and Compliance program exists to help members develop and provide high quality products that meet minimum operability requirements. OPC Certified products are:

  • Compliant with the OPC specifications
  • Interoperable with other OPC products from other vendors
  • Robust, reliable and able to recover from lost communications, etc.
  • Usable, by following universally accepted best-practices
  • Efficient in managing resources (CPU, memory, disk space etc.)


Modbus Image Modbus Image Modbus Image Modbus Image



  • Reads/writes Modbus slaves/masters
  • Modbus addresses up to 65535
  • Word and byte swapping
  • Discrete inputs, coils, internal and holding registers
  • Flexible conversion of data from Modbus to OPC UA

Supported operating systems:

  • Windows (7 or later);
  • Linux (deb/rpm)
  • Headless environments, such as docker containers or Raspberry Pi

Supported transfer protocols

  • Modbus TCP
  • Modbus RTU
  • Modbus RTU over TCP
  • Modbus ASCII

How to purchase a license or download a trial version.

A license can be purchased and the evaluation version can be downloaded in our online store.