Convert all our drivers to OPC UA. Or send some variables to OPC UA, some to MQTT and some to traditional SCADA/DCS (61850, DNP3, 60870)

1. Create and configure the OPC UA Server configuration

Start by opening the Fieldbus Configurations ( ), and add an “OPC UA Server” configuration:

2. Configure the OPC UA Server configuration

Double-click on the first level of the configuration and configure the following:


  • The description of the OPC UA Server
  • Maximum number of sessions allowed on the OPC UA Server
  • Maximum subscriptions allowed pr. session on the OPC UA Server
  • Maximum monitored item pr. subscription on the OPC UA Server
  • Maximum PublishRequest allowed pr. session of the OPC UA Server
  • Select the debug/trace level
  • Specify if the OPC UA Server should use certificate or not
    • It is possible to select use your own certificate or generate one
  • Specify whether anonymous access is allowed
  • Specify whether a username/password should be used

3. Add security

  • The IP Address of the RTU32 that the OPC UA Server will receive requests from for incoming connections
  • The port number that will be opened by the OPC UA Server to listen for incoming connections
  • If certificates are used, then configure the “Security Policies” to be used by the OPC UA Server

3. Add variables….. 

Now you are ready to add “Tag Groups” – Right-click the level 2 of the configuration and select “Insert Slave/Data block”, and enter a name for the tag group. The “Tag Group” is a way to organize your data points in the OPC UA Server. Once done adding the needed tag groups, add the variables to the tag group(s). Right-click the “Tag group” and select “Insert variable” and configure the following:

  • Select the application variable to map
  • Write the OPC Tag name – the name visible to the OPC UA Clients
  • Select whether the OPC UA Client has “Read Only” Or “Read/Write”-access to the variable.


It is that simple