This is my archive

How to integrate an external information model 

How to integrate an external information model  Note: This is an advanced topic which requires knowledge about OPC UA and XML file generation. In addition, some understanding of the tools UaExpert and UaModeler is required.  This guide is based on the Process Automation Device Information Model (PA-DIM), a companion… Read More

OPC UA PubSub

OPC UA PubSub Available from firmware 2022.0 LTS on all PLCnext Control devices Configurable in PLCnext Engineer from software release 2022.0 LTS Starting with firmware 2022.0 LTS, the PLCnext Technology firmware has an implementation of the OPC UA® Publish and Subscribe specification (PubSub) as a new communication protocol. This enables the data exchange in a… Read More

Alias Names

Alias Names Available from 2022.6 The eUA Server supports Alias Names according to the OPC UA specification OPC 10000-17 – Part 17: Alias Names. The functionality of Alias Names is to reference one or multiple nodes in a server address space using a custom name. The eUA… Read More

Reverse Connect 

Reverse Connect  Available from firmware version 2022.9 What problem should be solved In some automation applications the PLCnext Control device is connected to the internet. In this case, a basic security requirement is to reduce the open ports to prevent attacks from the internet. The Reverse Connect… Read More

OPC UA session 

OPC UA session  Creation The eUA server supports a limited amount of concurrent sessions depending on the controller type (Device-specific OPC UA settings).   The server verifies the ClientCertificate for secure endpoints when creating a session. Make sure that the ApplicationURI specified in the ApplicationDescription matches the… Read More

Profile and facets 

Profile and facets  The eUA Server implements the Embedded 2017 UA Server Profile and supports the following facets: Facets: Global Certificate Management Server Facet Historical Raw Data Server Facet A & C Alarm Server Facet File Access Server Facet DI BaseDevice… Read More

eUA Client diagnostics

eUA Client diagnostics Available from firmware version 2024.6 Overview Diagnostic information of the eUA Client is accessible via the eUA Server. The eUA Client object can be found in the server address space by the following path: Root → Objects → DeviceSet → Controller type (for… Read More

Further information on OPC UA® in PLCnext Technology

Further information on OPC UA® in PLCnext Technology See these additional topics  for further reference: Profile and facets shows all currently implemented facets, linked to the respective specifications Feature roadmap OPC UA shows which OPC UA® feature was implemented with which PLCnext Technology firmware release. Device-specific OPC UA settings shows the differences in… Read More

Connection configuration

Connection configuration Note: The OPC UA client and server use the OpenSSL library to validate X.509 certificates using the OpenSSL flag X509_V_FLAG_X509_STRICT. As firmware 2024.0 LTS is updated to OpenSSL 3.0, the X.509 certificate validation became more strict, especially for non self-signed certificates. This may cause the server to return the… Read More

Quickstart OPC UA server configuration

Quickstart OPC UA server configuration Tutorial video Note: Tutorial videos are embedded from the Phoenix Contact Technical Support YouTube channel.  With playing an embedded YouTube video in this platform, you accept the YouTube Terms & Conditions. Even showing the video previews on this page depends on your personal settings… Read More