The OPC UA Server exposes specified variables of a CODESYS project to the OPC UA address space. Clients can read, write and monitor the values of the PLC. Custom information models can be easily imported and linked to the PLC application. This also enables the execution of PLC methods by clients.
Also see [CODESYS Online Help](https://content.helpme-codesys.com/en/CODESYS%20Communication/_cds_runtime_opc_ua_server.html).
Certified compliance
OPC Foundation Certified for Compliance logo is a trademark of the OPC Foundation and may be used only by written permission of the OPC Foundation. Any unauthorized use of the Certified for Compliance logo is prohibited.
OPC Foundation Certified for Compliance logo indicates that this product has been tested by an independent certification lab and certified to be compliant with the following OPC UA Profiles which are part of the OPC UA Specifications:
Micro Embedded Device 2017 Server Profile
Method Server Facet
SecurityPolicy [B] – Basic256Sha256
SecurityPolicy [A] - Aes128-Sha256-RsaOaep
SecurityPolicy - Aes256-Sha256-RsaPss
User Token – Anonymous Server Facet
User Token - User Name Password Server Facet
Supported features
The OPC UA Server supports the following features:
Browsing of data types and variables
Standard read/write services
Notification for value changes (subscription and monitored item services)
No restriction in the number of sessions, monitored items, and subscriptions (the number depends on the performance of the respective platform)
Support of events
Support of complete access to structures
Encrypted communication with an OPC UA Client
Support of multitasking
Support of OPC UA methods
Support of Alarms&Conditons
Supported profiles: Currently the OPC UA server supports the “Micro Embedded Device Server Profile”. This server profile allows reading, writing, and subscribing of items.
Supported information models: OPC UA allows defining different data types. The combination of customer defined data types, object types and reference types allows defining your own information model. An information model describes how the data should be exposed to the address space.
Also see [CODESYS Online Help](https://content.helpme-codesys.com/en/CODESYS%20Communication/_cds_using_opc_ua_information_models.html).
Security:
SecurityProfiles:
User token policy: