Configuring the OPC UA Namespace
- Last UpdatedAug 28, 2017
- 2 minute read
The OPC UA Namespace is defined and exposed by the OPC UA server. Each namespace is identified by an index ID. You can define an alias name for a namespace according to the following rules:
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The alias name must be defined for the namespace URI exposed by the Gateway.
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The alias name must be in string format.
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There can be no more than one alias per namespace.
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The same alias cannot be given to two OPC UA namespaces.
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The alias must not conflict with any other namespace display name.
The OPC UA Namespace section of the OPC UA editor displays the Namespace alias table for the Namespace URI’s present in the OPC UA Server to which the OPC UA Client is connected.
The Namespace grid displays the following information:
|
Column Name |
Description |
|
Index |
Displays the Namespace index for the Namespace URI present in the OPC UA Server. The default Namespace is appended with * after the Index. The items configured in the default Namespace need not be subscribed in the syntax using the alias or the Namespace name. |
|
Alias |
Displays the alias name for the Namespace URI available in the OPC UA Server. You can change this name during configuration. The Alias box cannot be blank. You can use the "_" and "#" special characters in the alias name. You cannot create duplicate alias names. |
|
Node ID Type |
Displays the Node Id type of the Namespace in the OPC UA Server. Node Id type can be of String, or Integer data type. This information is obtained from the OPC UA Server. |
|
Namespace URI |
Displays the Namespace URI imported from the OPC UA Server. This information cannot be edited. |
Use the context menu in the Namespace Alias table to edit:
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Default namespace
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Node ID type (override)
To edit the namespace
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Right-click the Namespace URI you want to set as the default, and then select Set as Default Namespace. The Index will then be appended with an asterisk (*) to indicate the default Namespace URI.
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In the Alias text box of the selected Namespace, type an alias name for the Namespace URI.
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Right-click the Node Id Type you want to edit, and then select Override Node Id type as String or Override Node Id type as Integer. The data type of that Node Id is changed accordingly
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Save the OPC UA configuration.