OPC UA Server Definitions
- Akshay Sutar
- Wolfgang Granzer
To communicate with an OPC UA server, this information has to be defined. The server definition specifies the appropriate information to connect with an OPC UA server.
File location
<WorkspaceDirectory>\DataFiles\xio.OpcUa.ServerDefinitions.dat
Col# | Parameter | Description | Scope | Unit | Mandatory / default value |
|---|---|---|---|---|---|
1 | Name | The given name of the OPC UA server in the NETx Server. The combination of name and path must be unique within this definition file. | string | none | mandatory |
2 | Path | The generated path in the Item Tree. The combination of name and path must be unique within this definition file. | string | none | empty |
3 | URL | The URL of the OPC UA Server. | string | none | empty |
4 | User Security | If set to true, a secure connection will be used to connect to the OPC UA server. | true/false | none | false |
5 | Add Unknown Certificates | If enabled, unknown certificates are accepted by the OPC UA client implementation. If disabled, the certificate must be trusted by this computer. A trusted certificate must be either an official certificate or the CA certificate must be located in the certificate store of the local computer (path "Local Computer\NETx BMS Platform"). | true/false | none | True |
6 | Username | If the OPC UA Server requires authentication, the username must be specified here. | string | none | String |
7 | Password | If the OPC UA Server requires authentication, the password must be specified here. | string | none | String |
8 | Write Timestamps | Choose which timestamps shall be used for writing to OPC UA data points. | Neither, Source, Server, Both | none | Neither |
9 | Subscription Delay | Delay between the successful connect to the OPC UA service and the subscription request. This option is useful when the OPC UA nodes are not immediately available after starting an OPC UA server. | 0 – 600 | seconds | 0 |
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