Siemens PROFINET SIRIUS 3RW5 - Establishing a Connection to the OPC UA Server

The following schema 󹪝les are used for the 3RW5 OPC UA server:
Schema Description
https://opcfoundation.org/UA/schemas/1.04/UANodeSet.xsd XML schema for NodeSet 󹪝les
https://opcfoundation.org/UA/schemas/1.04/Opc.Ua.NodeSet2.xml OPC UA ("CORE") Model of 2019-09-09
https://opcfoundation.org/UA/schemas/DI/1.2/Opc.Ua.Di.NodeSet2.xml OPC UA for Devices ("DI") Model of 2019-05-01
Principle of operation
The OPC UA server integrated in the 3RW5 PROFINET High Feature communication module
provides structured objects (variables) in an address space that the OPC UA client can access in
read-only mode. Controlling access to the 3RW55 and 3RW55 Failsafe soft starters is not
possible.
Maximum number of OPC UA client connections: 2
Maximum number of subscriptions (subscribable variables): 5 subscriptions are possible per OPC UA client connection. 100
objects can be monitored in each subscription. This allows up
to 1000 objects to be monitored (2 x 5 x 100 = 1000).
Shortest update interval for subscriptions: 160 ms
Languages
The objects (variables) of the OPC UA server are only available in English.
Additional information
Further information about OPC UA can be found, for example, in the application descriptions
"Programming of an OPC UA .NET client with C# for the SIMATIC NET OPC UA server" (
https://
support.industry.siemens.com/cs/ww/en/view/42014088) or "Creating OPC UA clients
with .NET and Helper class" (https://support.industry.siemens.com/cs/ww/en/view/109737901)
and on the website of the OPC UA Foundation (https://opcfoundation.org/).
8.4.1 Establishing a connection to the OPC UA server
An OPC UA client can access variables in the hierarchical namespace of the OPC UA server. The
representation of the OPC UA variables depends on the OPC UA client used.
Note
Con󹪝guration of the connection in the OPC UA client
The functionality of an OPC UA client depends on the manufacturer. Information is available
directly from the manufacturer of the OPC UA client that is to access the data of the OPC UA
server via OPC UA.
Functions
8.4 OPC UA server
SIRIUS 3RW5 PROFINET communication modules
110 Equipment Manual, 05/2021, A5E35631297002A/RS-AD/004