Access To Opc Ua Applications - Siemens SIMATIC ET 200AL System Manual

OPC UA client for test purposes
The following description uses various different OPC UA clients to illustrate the use of OPC UA
clients:
• "UaExpert" of Unified Automation. An extensive client that can be used free of charge:
Link for downloading UaExpert
clients.html)
• "UA Sample Client" of the OPC Foundation. This client is available free of charge for users
who are registered with the OPC Foundation :
Link for downloading the example client of the OPC Foundation
(https://opcfoundation.org)
Application example in Industry online support
Siemens Industry Online Support provides a free application example with a client API for
various applications. You use the functions of this interface to create your own OPC UA
clients that match your application. To simplify handling the API, we offer a higher-level .NET
helper class.
The client API is based on the .NET OPC UA stack of the OPC Foundation.
The application example shows how to establish connections between servers and clients, for
example. It also demonstrates the reading and writing of PLC tags.
Link to download: OPC UA .NET client for the SIMATIC S7-1500 OPC UA Server
(http://support.automation.siemens.com/WW/view/en/109737901)
9.1.4

Access to OPC UA applications

The access possibilities that an S7-1500 CPU with an OPC UA application (client or server) has
via a CP in the same station are described below. In addition, an approach for combining
these access possibilities with the "IP Forwarding" function to allow access to devices of
another IP subnet via an S7-1500 station is presented.
All the settings for this can be found in the CPU properties, "Advanced configuration" area in
the Inspector window.
The possibility of accessing the OPC UA application in the CPU via CP interface is subject to
the following requirements:
• S7-1500 CPU (except S7-1500 R/H) as of firmware version V2.8
• CP 1543-1 firmware version V2.2 or higher
Communication
Function Manual, 05/2021, A5E03735815-AJ
9.1 What you need to know about OPC UA
(https://www.unified-automation.com/downloads/opc-ua-
OPC UA communication
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