Hi caue.polachini,
What kind of Register do you mean exactly?
The URCap provides functions for communication via the OPC UA protocol, but it’s an application level module, which means that the communication must be controlled in the main robot program.
For example, you can read parameters from a remote OPC UA server to perform a specific robot task, or update the value of a OPC UA variable to indicate the status of a task performed by the robot.