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Home » Eclipse Projects » 4DIAC - Framework for Distributed Industrial Automation and Control » OPCUA_Var Function Block(Function Block to allow write in some OPC UA variable in the FORTE application running OPCUA Server)
OPCUA_Var Function Block [message #1793982] Tue, 21 August 2018 19:48
Felipe Adriano is currently offline Felipe AdrianoFriend
Messages: 26
Registered: February 2017
Location: Brazil
Junior Member
The Ideia is create a OPCUA_Var block to access variables added to server using PUBLISH and SUBSCRIBE FBs.

index.php/fa/33674/0/

Actually to create an OPC UA server using a PUBLISH and SUBSCRIBE Blocks you need to pass the following paramters:

opc_ua[/Objects/1:VAR1]

This will add a variable to OPC UA server using a numeric node id, but you do not have control over the identifier that usually begins with 50190 (if you browse the node using uaexpert)

To access the variable using OPCUA_Var Block it would be useful know the identifier a priori, setting the identifier in the PUBLISH and SUBSCRIBE parameters, for example:

opc_ua[/Objects/1:VAR1:50190]

Is possible to do that with current implementation of OPCUA FBs?
There are another way to acess the variable using the OPCUA_Var FB?

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