IO-Item Object
An IO-Item object represents an items in the external datasources.
In other words, IO-Item objects are created for each tag that is subscribed from a datasource.
IO-Item objects can be created under DataSource objects,
IO-Node objects and History Transporter objects.
Like Datasource objects, IO-Item objects are specific to the type of external system they connect to.
When creating an IO-Item object under a History Transporter, make sure to select the IO-Item type that corresponds to the imported data.
On Datasource and IO-Node objects, only matching IO-Items can be created.
The following table lists the available IO-Item object types and their corresponding Datasource object types:
Datasource OPC AE Datasource OPC AE HDA, Datasource OPC DA, Datasource OPC DA AE, Datasource OPC DA AE HDA, Datasource OPC DA HDA, Datasource OPC HDA |
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Create Object
1 In the I/O Model panel of WebStudio’s Config App, right click on the intended parent object and select to open the Create Object wizard.
2 In the Create Object dialog.
3 Expand the External Interfaces compound and select IO-Item.
4 Enter an Object Name.
5 For the Item ID specify the unique identifier by which the item is identified in the external system.
6 Click Create.