OPC UA Source System

With the OPC Unified Architecture source system, you can set up the connection to an OPC UA server that is based on the OPC UA specification with version 1.03.

You can use the OPC UA source system to read and write current tags. In addition, the reading of historical tags (tag values, metadata, and secondaries) is supported. However, historical tag data can only be read if the tags also support historical data.

Restrictions with historical tag data:

• The writing of historical tags is not supported.

• The reading of processed data, such as average, minimum, or maximum values is not supported for historical tags.

PCo provides the following tabs for configuring an OPC UA source system:

• Session Tab

• Security Tab

• Subscription Tab

• OPC UA Source System: Structures Tab

• Aliases Tab

• Reliable Connection Tab