Connecting to an OPC UA server
- You are working in
- Your OPC UA device is on the network and ready to connect.
- Prosys OPC UA Simulation Server is installed on the PC.
- Open the OPC UA server software and navigate to the Status tab.The software opens.
The example server software above is the ProSys Simulation Server. However, it is more likely that you will open a connection to your OPC UA server using software known to you that serves-up actual historical and live data.
- Locate the
Connection Addressand copy it along with the required security mode and user authentication method.In the example above, this address is:opc.tcp://IE67DTDVYXXC2.global.ds.honeywell.com:53530/OPCUA/SimulationServerWithin
Sign and SignEncryptand security policyBasic256SHA256. These are the recommended settings for high security. A warning accompanies the other security policies and modes that the driver supports. You or an administrator must acknowledge this alert to proceed. The driver logs the acknowledgment in the system for audit purposes. - In the
The Opc Ua Client Device Manager opens.
- To add a new device, click New.The New window opens.
- Select the OpcUaDevice from the drop-down list and click OK.A second New window opens.
- Configure at least these properties and click OK.
Server Endpoint Urlis theConnection Addressyou copied earlier.Security Mode, by default, is set toSign Ecript Basic256 Sha256. This value must match the server’sSecurity Modeconfiguration. The defaultSecurity Modefor both OPC UA server and device isSign Ecrypt Basic256 Sha256, which enables signing and encryption with security policyEncryptBasic256SHA256.Certificatedefaults to the self-signed tridium certificate. For higher security, use a signed client certificate that matches the root CA certificate in the station’s Trust Store.
- To configure the
User Authentication Mode, open the device’s AX Property Sheet by right-clicking on OpcUaDevice followed by clicking .The Property Sheet opens.
- Select the
User Authentication Modefrom the drop-down list and click Save.ForUser Authentication Mode, select the option the server requires. For example, the Prosys Simulation Server is configured forAnonymoususer, as shown. If you select the optionUser Name And Password, you must enter the credentials required by the server. - To confirm that the network connected successfully to the server, review the
Server Stateindicates Running and theServer Current Time,Server Start Time, andServer Infoproperties.The system should have populated these properties with current values.