Configuration of the OPC UA® server with PLCnext Engineer You can configure the OPC UA® server with the software PLCnext Engineer. For more information about the configuration options refer to the section OPC UA Server in the Online Help of PLCnext Engineer. You can find the PLCnext Engineer Online Help within the software at the Help →… Read More
OPC UA client Available from 2023.0 LTS The OPC UA client supports subscribing variables from connected servers and writing changes of local variables to connected servers. The PLCnext Control device establishes the connection automatically as soon as the server is available. When the connection gets lost, the OPC UA… Read More
OPC UA features Here’s an overview to the OPC UA features and when they were implemented into PLCnext Technology: OPC UA® Server Firmware version 2019.0 LTS 2020.0 LTS 2021.0 LTS 2022.0 LTS 2023.0 LTS 2024.0 LTS 2024.6… Read More
OPC UA discovery/connection options 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… Read More
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. To… Read More
OPC UA Server On request, an OPC UA® server provides an OPC UA® client with process data and variable values from a running application. The PLCnext Control devices contain an embedded OPC UA® server (eUA). In addition to the runtime, it is integrated in the controller. It enables access to components, programs, function blocks, structures and… Read More
REST data interface – Groups If desired, the web server can manage the registered groups in order to make it easier to read a pre-defined list of variables. Otherwise, one can simply use the web server to read the variables directly. Note: Phoenix Contact reserves the right to make changes and additions in… Read More
REST data interface Introduction In this topic you will learn about the REST-based approach of PLCnext Technology which is utilized to exchange data via HTTP with the PLCnext Control’s firmware and with data in the Global Data Space (GDS). REST, or REpresentational State Transfer, is a software architecture style consisting of guidelines and best practices for… Read More
REST data interface – Variables Note: Phoenix Contact reserves the right to make changes and additions in further versions that might lead to incompatibilities. Therefore it is highly recommended to call this REST data interface out of your application explicitly with the version used during development, not with the latest key. Read Variable(s) This command… Read More
Communication via MQTT broker Available from firmware 2024.0 LTS PLCnext devices running firmware 2024.0 LTS or newer can communicate not just to Proficloud but to any MQTT broker, e.g. those provided by Amazon Warehouse Services (AWS) or Microsoft Azure. This implementation of an MQTT client directly within the firmware is one of many possibilities,… Read More
