OPC UA® file access 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 in the… Read More
OPC UA Historical Access (HA) Available from 2019.6 Standard OPC UA® HA enables the OPC UA® clients to access the historical data of the PLCnext Technology DataLogger. You can call selected variables from a database using OPC UA® HA. To use OPC UA® HA for the data of GDS variables, the variables must be present in at least one… Read More
Device-specific OPC UA® settings and limitations OPC UA server The PLCnext Technology controllers have the following device-specific default OPC UA® settings: Target Maximum number of sessions Minimum supported sample rate Available sample rates AXC F 1152 3 100 100, 250, 500, 1000, 2000, 5000 AXC F 2152… Read More
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 secure channel The eUA server supports client communication over encrypted endpoints by default. To configure the endpoints, refer to OPC UA endpoint configuration. Client application authentication The eUA server supports client certificate authentication over secure endpoints by default. The certificates of OPC UA® clients… Read More
Overview to OPC UA® with PLCnext Technology OPC Unified Architecture (UA) is a standardized protocol for industrial IT and OT communication. The following areas of OPC UA are integrated in PLCnext Technology and can be used in your application. OPC UA Server On request, an OPC UA® server provides an OPC UA® client… Read More
OPC UA® monitored item and subscription An OPC UA® client can subscribe to a list of variables that are then monitored for changes by the GDS. The variables are checked for changes at a defined interval. When subscribing to a variable, the client can define a sample rate, which is then served by… Read More
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
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 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
