An OPC UA Block object enables reading or writing a set of values. To perform a writing, users must set a new value to the Value property. Reading an OPC UA Tag is performed automatically by the OPC UA Server with a scan time defined on the OPC UA Subscription. The Size property determines the number of OPC UA Block Elements of an OPC UA Tag in an OPC UA Server.
NOTE |
In its current version, Elipse E3 only allows mapping one-dimensional arrays to OPC UA Blocks, although OPC UA standard supports n-dimensional arrays as data types. |
To use this resource, follow these procedures:
1.Right-click an OPC UA Subscription and select the Insert - OPC UA Block option.
Inserting an OPC UA Block
2.A dialog box opens to indicate how many OPC UA Blocks must be created on the OPC UA Subscription, and their names. This name is auto-incremented and, if this option is left blank, those OPC UA Blocks are created with a default name.
Adding UaTagBlock window
3.A dialog box opens to determine the number of OPC UA Block Elements in this object. In this option, users can indicate a mapping of all OPC UA Block Elements or only of a certain interval of OPC UA Block Elements.
Configure the New Block window
4.Inform an OPC UA Block size and its mapping options.
5.Click OK.
6.If needed, configure this object's properties.
Some properties of an OPC UA Block can be configured using the Properties List, without creating scripts for this. If users want to configure any property, locate it on the Properties List and perform the settings. The description of the properties of this object can be found on the Elipse E3 Reference and Scripts Manual.