Delta AX-3 Series, Operation Manual

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AX - 3 S e r ie s O p e r a t i o n M a n u a l
8 - 2
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8.1 OPC UA Server
The standard installation of DIADesigner-AX includes an OPC UA server. You can use it to access the variable interface
of the controller via a client. The OPC UA server communicates with connected OPC UA clients over a separate TCP
connection. Therefore, these connections have to be examined again separately with regard to security.
The OPC UA server can now be safeguarded by using encrypted communication to the client and OPC UA user
management. See the following sections for these settings.

Browsing of data types and variables

Standard read/write services

Notification for value changes: subscription and monitored item services

Encrypted communication according to “OPC UA standard (profile: Basic256SHA256)”
8.1.1 Creating a Project for OPC UA Access
You need to create a project for OPC UA access before using OPC UA Server. Follow the steps below.
1. Create a new DIADesigner-AX project.
2. Declare some variables of different types in the PLC_PRG program.
3. Go to
Application -> Add Object -> Symbol Configuration
to add a Symbol Configuration object.