PLCcom Opc Ua Client Sdk | Downloads and Resources
Welcome to the download area of the PLCcom Opc Ua Client Sdk!
On this page we provide you with the latest versions of our software as well as related documentation and other resources.
Whether you want to test the software or get started straight away - you will find everything you need here.

.Net
PLCcom Opc.Ua.Client.Sdk Version 9.2.4.1
Upload-Datum: 05.03.2025
30-day trial version
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Java
PLCcom Opc.Ua.Client.Sdk Version 9.2.1
Upload-Datum: 12.02.2025
30-day trial version
Consent End User License Agreement (EULA)
Thank you for your interest in our products. We will be happy to provide you with the requested download.
Before downloading the software, please confirm that you have read and accept the End User License Agreement in all points...
Bleiben Sie immer auf dem Laufenden mit den neuesten Informationen, Angeboten und exklusiven Updates direkt in Ihrem Postfach. Wir versprechen Ihnen, nur relevante Neuigkeiten zu senden – keine unnötigen E-Mails oder Spam.
Your data is safe with us:
We never pass on your personal information to third parties. Your privacy is important to us.
Register now and don't miss a thing!
Documentation PLCcom.Opc.Ua.Clients.Sdks
PLCcom class library documentation for .net
PLCcom class library documentation for java
First steps PLCcom.Opc.Ua.Clients.Sdks
First steps PLCcom Opc.Ua.Sdk .NET V9
First steps PLCcom Opc.Ua.Sdk Java V9
Changelog PLCcom.Opc.Ua.Sdk
Version 9.2.4.1 (.net version only)
- New: In response to customer requests, the option has been introduced to accept server-side certificates that contain errors that cannot actually be suppressed according to the Opc specification. For this purpose, the CertificateValidationEventArgs object has been extended by the AcceptAll flag
Version 9.2.1 (Java Version only)
- Bugfix: Discovery Endpoints aborts with a NullPointerException if an endpoint was not correctly transferred from the Opc Ua server
- internal improvement
Version 9.1.5 (Java Version only)
- Bugfix: Possible java.lang.NoSuchMethodError when using Java version 8
Version 9.2.3.1 (.net version only)
- Bugfix: When writing UIn16 and UInt32 values, problems could occur when transferring values if a casting of the value to the data type Variant was missing
Version 9.2.2.1 (.net version only)
- Elimination of known vulnerabilities Third-party libraries
- Introduction of a flag (TolerateFaultyServerState) with which an automatic reconnect can be prevented if the status of a connected Opc Ua server is not “Running”.
- Several minor internal revisions and improvements
Version 9.1.2
- Elimination of internal vulnerabilities, as well as known vulnerabilities of the third-party libraries used
- Support of the .Net 8.0 framework (only .Net version)
- various internal revisions and improvements
Version 8.1.1
- further adaptations of the Sdk to the current Opc Ua specification
- Elimination of internal vulnerabilities, as well as known vulnerabilities of the used third-party licenses
- Adaptation package naming, see Firststeps document in download package (Java version only)
- Support for .Net 7.0 framework (.Net version only)
- various internal revisions and improvements
Version 7.4.1 (Java version only)
- Security update due to vulnerabilities in the dependencies of Bouncy Castle V1.54 and guava V21.0
Version 7.3.2
- Revision of the reconnect functions
- Internal changes to improve the processing speed
Version 7.2.2 (Java version only)
- Support Java / OpenJRE up to version 19
- Adaptation methods for loading certificates
- Bugfix: possibly occurring problem with endpoint discovery with exception Bad_InvalidTimestamp fixed
- Revision sample code in download package
Version 7.1.3
- new function browseFull, all necessary browse and browseNext operations are combined to one function call
- License may not be accepted even though it is valid
- Bugfix: Function browseNext passes possibly wrong continuationPoint
Version 7.1.1
- Support for .Net 6.0 framework (.Net version only)
- Support Java / OpenJRE up to version 17 (Java version only)
- new Function GetNodeIdByPath
- various internal improvements and revisions
Version 6.1.1
- Support of the .Net 5.0 framework
- Fix problem rebuilding Subscriptions and MonitoredItems after connection loss
- Fix problem, high CPU / RAM usage after restart of OPC server
- internal improvements and revisions
Version 5.1.8 (Java version only)
- Fixed problems when using under Java 1.8 (wrong class version of MonitoredItemNotificationListener)
Version 5.1.4 (Java version only)
- Bugfix: Issuing a "self signed certificate" fails due to country-specific requirements
Version 5.1.3
- Complete revision of the routines according to the specifications of the OPC Foundation
- Provision also for .Net Standard / .Net Core (.Net version only)
- Provision also for openJRE/openJDK (Java Version only)
- internal speed and stability improvement
Version 4.3.1
- Bugfix: For incorrect host names in the endpoint URL
- internal speed and stability improvement
Version 4.1.0
- Support of registered read and write
- Adaptations to the current OPC UA specifikation
- Bugfixes
- internal speed and stability improvement
Version 3.6.4
- Endpoints with IP 0.0.0.0 in the URL will now be tolerated
Version 3.6.3
- detailed error message during certificate validation
Version 3.6.2
- Bugfix: Brows nodes
Version 3.6.1
- new improved functions to perform call method calls
- Extension of the "read" and "write" functionalities
- Adaptation and extension of the online documentation
- Adaptation and extension of the "First Steps" tutorial
- Delivery of the product no longer as a setup, but within a zip file
Version 3.5.0
- Bugfix: While transferring an identitytoken object (Username + Password)
- Extension of the Discovery functionality, the transfer of a Discovery Uri is also possible now.
Version 3.4.0
- Bugfix: Starting an ASP application
Version 3.3.0
- Bugfix: Browser description adjusted
Version 3.2.8
- Bugfix: Processing certificate check
Version 3.2.6
- improved sorting behavior when querying endpoints
- Setup is signed
Version 3.2.5 (Java version only)
- Bugfix: When sending encrypted passwords
Version 3.2.4
- Bugfix: GetFilteredEndpoints always used the Discoveryport 4840
Version 3.2.3
- Bugfix: Optimization of cache functionality when loading
- Revision of the constructor of the session configuration
- new static method Build () for easy creation of session configurations
- Adjusting of online documentation
- Adjusting of browsemethods, if the UA-server supports inverse browsing according to specification
- new filter methods
Version 3.2.0 (Java version only)
- Bugfix: When filling the internal node cache, not all types of nodes have been considered
Version 3.1.0
- internal speed improvements
- Bugfix: Internal cache is used consistently