An extension for CODESYS SoftPLC systems for data exchange with OPC UA servers.
The CODESYS OPC UA Client can be used to connect to any OPC UA servers and exchange data with them. The client provides an API to connect to an OPC UA server and execute the different kind of OPC UA requests.
The OPC UA Client API supports the following services:
Discovery:
GetEndpoints
FindServers
FindServersOnNetwork
Session:
CreateSession
ActivateSession
DeleteSession
View:
Browse
BrowserNext
RegisterNodes
UnregisterNodes
TranslateBrowsePathsToNodeIds
Attribute:
Read
Write
Subscription:
CreateSubscription
ModifySubscription
SetPublishing
Publish (Handled by the Runtime itself)
DeleteSubscription
MonitoredItems:
The client is able to handle both types of monitored items (event and sampling). The only difference in handling is the callbacks that are called for both types.
CreateMonitoredItems
DeleteMonitoredItems
ModifyMonitoredItems
SetMonitoringMode
Security: The OPC UA client uses the existing security related runtime interfaces to handle the encryption algorithms and certificates. The client registers itself to the certificate store for easy configuration of the client certificates.
SecurityProfiles:
None
Basic256Sha256 (Sign, Sign_and_Encrypt)
Aes128_Sha256_RsaOaep
Aes256_Sha256_RsaPss
User token policy:
Anonymouse
Username
An example demonstrating how to use the API is available in the CODESYS Store: ‘OPC UA Client Example’.
Additionally it is possible to connect the OPC UA Client to an OPC UA Server within the CODESYS IDE via the “Data Source Manager” object. OPC UA Servers can be added online or offline.
Online: Using the IP adress the client connects to the server and detects the existing variables and types. The user can select the objects to be browsed.
Offline: Using an OPC UA information model file the client reads the variables and types from the information model. A connection to the server is not required.
Also see [CODESYS Online Help](https://content.helpme-codesys.com/en/CODESYS%20Communication/_cds_obj_data_source_communication_opc_ua_server.html).
Programming System | CODESYS Development System V3.5.17.0 or higher |
Runtime System | CODESYS Control V3.5.17.0 or higher |
Supported Platforms/ Devices | CODESYS SoftPLC systems Note: Use the tool “Device Reader” to find out the supported features of your device (free of charge component of CODESYS Development System). |
Additional Requirements | - |
Restrictions | - |
Licensing |  Single Device License: The license can be used on the target device/PLC on which the CODESYS Runtime System is installed. Licenses are activated on a software-based license container (soft container), which is permanently connected to the controller. Alternatively the license can be stored on a CODESYS Key (USB-Dongle). By replugging the CODESYS Key, the license can be used on any other controller. Note: In demo mode, the software runs for two hours without a license. After that, a manual restart is required. |
Required Accessories | Optional: CODESYS Key |
Technical support is not included with this product. To obtain technical support, please purchase a CODESYS Support Ticket.
For general error messages or pre-sales inquiries, please use the "My Question" contact form directly, which can also be used without logging in. A list of alternative support resources can be found in the support section of the CODESYS Group website.
CODESYS Corporation
A member of the CODESYS Group
200 Cummings Center, Suite 272-D
Beverly, MA 01915, USA
