OPC UA Client Data Source

The OPC Unified Architecture (UA) client provides direct access to data served by OPC UA servers.

OPC UA items added to Workflow can be used as data items for workflows, events, and equipment properties. Workflow can read from and write to these data items. OPC UA server configurations can be imported and exported to other systems.
Tip: You can add up to 5,000 items per group.

Edit Description

You can change the description of this resource.
Attribute Value Description
Description User defined up to 255 characters. Provides more information about a resource that a user may find helpful.
The following table describes the OPC UA server attributes on the OPC UA Editor:
Attribute Value Description
OPC UA Server Name User-defined alphanumeric string (A–Z, a–z, 0–9) up to 255 characters. Displays the name of the OPC UA server.
Description User-defined alphanumeric string (A–Z, a–z, 0–9) up to 255 characters. Provides more information that a user may find helpful.
URL User defined. Specifies the URL of the OPC UA server you want to connect to. You can select from the list or enter the URL. Refer to your OPC UA server documentation to determine the URL.
Check Connection N/A

Displays the status of the OPC UA server. Status information includes:

Connection Status: connected or not connected

Please see Authentication for more information about authentication settings.

Add OPC UA Items to Workflow

Before you can add OPC UA items to Workflow, you must add one or more item groups to the OPC UA server. Item groups allow OPC UA data items to be organized for easier navigation.

After you add your OPC UA group(s), you can browse the OPC UA server and add up to 5000 items to each group. The items are automatically added to Workflow when you add them to a group. If you want to add only a subset of the available items, you can expand the top-level item list in the Server items area, and then select the check box beside each item or set of items you want to add. You can also remove items from the Selected Items list.

The following table describes the OPC UA Server Group attributes on the OPC UA Editor:
Attribute Value Description
OpcUaGroup Name User-defined alphanumeric string (A–Z, a–z, 0–9) up to 255 characters. Displays the OPC UA Group.
Description User-defined alphanumeric string (A–Z, a–z, 0–9) up to 255 characters. Provides more information that a user may find helpful.
Browse Server Click to browse the selected server for items.
Server Items N/A Displays the items contained by the selected server. Select the highest-level check box to select all of the items and add them to the Selected Items list. This check box is not available if the server contains more than 5000 items.
Selected Items N/A Displays the items you selected to add to Workflow.
Remove N/A Click to remove the selected item from Workflow. Removing an item from Workflow does not remove it from the server.