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CreateOPCUAScope (Activity)


The CreateOPCUAScope opens a previously configured OPC Connection, processes variable requests and closes the connection when finished.

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Description

Configure OPC UA Variable
Name CreateOPCUAScope
Purpose Create a scope for accessing OPC variables
Category UBIK OPC UA Interface
Returns True if successful
Version 2.4.1+

Arguments

Argument Type Direction Purpose
Connection OPCUAServerConnection In A valid connection object as produced by a predecessing OPC Connection
Result Boolean Out True if successful, false if failed

Usage

This activity is used to open a preconfigured OPC Connection. It is a nestable activity, which means it can host any amount of sub-activities that will be processed sequentially. The hosted activities are typically AccessOPCUAVariable activities, either as direct children but also wrapped within looping activities like ForEach or While. When all child activities are processed the OPC connection will be closed again.

Example

The CreateOPCUAScope activity, as used in the larger example "Read value from OPC variable":

UI Activity CreateOPCUAConnection Example.png

See also