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

OPC UA communication
9.3 Using the S7-1500 as an OPC UA server
Settings remain stored
If you have already enabled the server and made settings, those settings are not lost if the
server is disabled. The settings are saved as before and are available when you enable the
server again.
Application name
The application name is the name of the OPC UA application (server). The name is
displayed under "OPC UA > General":
● The default setting for the server name is: "SIMATIC.S7-1500.OPC-UAServer:PLC1".
● The default consists of "SIMATIC.S7-1500.OPC-UAServer:" and the name of the CPU
selected under "General > Product information > Name", in this case "PLC_1".
● Clients identify the server using the application name.
The example below originates from UaExpert:
If you have activated the server, you can also use a different name that is meaningful in your
project.
Changing the application name
To change the name of the OPC UA server, follow these steps:
1. Select the CPU. Click on the CPU symbol (for example in the network view).
2. Click "OPC UA > General" in the properties of the CPU.
3. Enter a meaningful name.
Please note that the application name is also entered on the certificate (Subject Alternative
Name) and you may have to generate an existing certificate again after changing the
application name.
9.3.2.2

Access to the OPC UA server

Server addresses
The OPC UA server of the S7-1500 CPU can be accessed over all internal PROFINET
interfaces of the CPU (as of firmware V2.0), but not over the PROFINET interfaces of
CP/CM.
With SIMATIC S7-1500 SW controllers, access to the OPC UA server is only possible via
PROFINET interfaces that are assigned to the software PLC.
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Function Manual, 12/2017, A5E03735815-AF
Communication