OPC UA client
Use an OPC UA client object to import nodes at design time or runtime from an OPC UA server.
TIP:
A project can contain multiple OPC UA clients.
At design time, use the editor to select nodes to synchronize. For each node that you import from a server, you create a corresponding project node. If the client has adequate permissions set in the
User Identity
parameter of the OPC UA client, the nodes remain synchronized with the server nodes during read and write at runtime.
IMPORTANT:
For nodes imported at design time, including object/variable types, the corresponding
BaseObject
or BaseVariable
nodes are created automatically.Operation
OPC UA clients access nodes published by OPC UA servers to:
- Read from servers or listen to events
- Write to servers or invoke methods
At runtime, use the imported nodes to create application logic. You can specify the nodes to import at design time or at runtime. For example, an OPC UA client can read specific object variables or listen to events generated by alarms.
Provide Feedback