OPC UA Item Names and Syntax
- Last UpdatedAug 19, 2024
- 1 minute read
You can access data for OPC UA server items in the default namespace, with a complete namespace URI, and with a namespace alias. Each context requires its own syntax.
|
Namespace |
Item Syntax and Description |
Description and Example |
|
Default Namespace |
UAItemReference (<Node ID Data Type prefix>=<Node ID>) |
UAItemReference is the identifier of the item (complete path of the OPC UA Server item, followed by the NodeId) in OPC UA Server. It is resolved by the OPC UA Server, and the case is preserved. This is case sensitive Example: s="DB5_INT"."Integer1" |
|
Namespace Alias |
/UANamespaceAlias/UAItemReference |
UANamespaceAlias is the Namespace alias name used to identify the namespace in the OPC UA Server. This is configured in the OPC UA editor. It is replaced by the true namespace URI in the UA Client, before it is sent to the server. The namespace alias is not case sensitive. Example: /Boiler/i=10853 |
For more information, see Use VT item suffixes.