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OPC UA (Plugin)


Revision as of 10:20, 4 March 2015 by KNO (Talk | contribs) ({{UBIK}} Activities)

The UBIK® OPC Unified Architecture interface module enables interfacing between a UBIK® server and any OPC UA compliant data source in a bidirectional manner.

Overview

Prerequisites

The UBIK® OPC UA components are acting as an OPC Client, therefore a secure connection to the respective OPC Server needs to be established in order to be able to communicate. The security standards that need to be applied are highly dependent on the server configuration and security infrastructure, but normally at least a client certificate needs to be issued that has to be trusted by the server:

  1. Open a command box on the UBIK® server with administrator privileges ("Run as administrator...")
  2. Run the program CreateCertifcate.exe from the archive CreateCertificate.zip
  3. Open the program Manage computer certificates (typically C:\WINDOWS\System32\certlm.msc)
  4. Navigate to Personal - Certificates and find the certificate named UBIK OPCUA Interface
  5. Export the certificate and trust it on your OPC server

Export Certificate

UBIK® Activities

Activity Category Purpose (Short)
CreateOPCUAConnection UBIK OPC UA Interface Creates a new connection to an OPC UA data source
ConfigureOPCUAVariable UBIK OPC UA Interface Configures a single OPC variable in a connection for later access
CreateOPCUAScope UBIK OPC UA Interface Defines a scope in an OPC UA connection wherein variables can be accessed
AccessOPCUAVariable UBIK OPC UA Interface Reads or writes a single configured OPC UA variable

Examples

Download example workflow OPCReadVariables.uwf for use against the OPC Quickstart Data Access Server.