Siemens PROFINET SIRIUS 3RW5 - Page 107

OPC UA
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OPC UA o󹪜ers the following features:
• Simple client-server principle: An OPC UA server provides a lot of information within a
network. An OPC UA client retrieves this information.
• Use of open and non-platform-speci󹪝c protocols for network communication.
• Integrated access control and security mechanisms at the protocol and application level.
• OPC UA and PROFINET can be used together. Both protocols use the same network
infrastructure.
• Operating system independence: The OPC UA standard is platform-independent and uses an
optimized, TCP-based binary protocol for high-performance applications. For example,
OPC UA can be used on Windows, Linux, Mac OS X, a real-time operating system, or a mobile
operating system (Android or iOS).
• OPC UA currently supports the following transport mechanisms and protocols:
– Transfer of messages as binary stream directly via TCP/IP.
– Transfer of messages with XML over TCP/IP and HTTP. This transport mechanism allows
only slow transmissions and is therefore hardly ever used. The 3RW5 PROFINET High
Feature communication module does not support this transport mechanism.
Binary data exchange is supported by every OPC UA application (speci󹪝ed by the OPC UA
speci󹪝cation).
Functions
8.4 OPC UA server
SIRIUS 3RW5 PROFINET communication modules
Equipment Manual, 05/2021, A5E35631297002A/RS-AD/004 107