OPC UA RTU
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
- 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
4. 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.
