Litmus Edge OPC UA
Litmus Edge is a platform that allows you to collect, analyze, and act on real-time data at the edge while providing reliable data transmission.
It implements the OPC UA protocol through which various systems and devices communicate by sending request and response Messages between Clients and Servers or NetworkMessages between Publishers and Subscribers over supported network types such as HTTPS and HTTP.
In this Client-Server model, a set of Services acts as the interface between Clients and Servers. Object information from the Server that is made available to the Client is called the Address Space and is exposed in formats such as XML and JSON.
The basic component of the Address Space is a Node, which contains values or references to other nodes. The referenced nodes represent the hierarchy structure.
For more information regarding the OPC UA standards, please see the Unified Architecture specification.
The Listener allows you to retrieve tag values of the selected nodes on the Litmus Edge OPC UA Server.
The Action Agent allows you to publish the supplied tag values to the selected nodes on the Litmus Edge OPC UA Server.
The Action Agent updates the Node's Value only due to a limitation on the Litmus Edge OPC UA Server. The Source and Server Timestamp retain the value from the server.
Pre-requisites
In order to retrieve and publish Tag values on the Litmus Edge OPC UA Server, the Nodes should have Read and Write access configured.
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