Basic understanding of open62541

[Malte Hering]

Hello everyone, I am a student and have to create an OPC UA server and client for a course.

Unfortunately, I still have difficulties understanding the system behind the Open62541. I have considered a system based on the examples you can tell me whether this is correct or whether there are other options.

Our system: I have another program that enters new values ​​in local files. The server must read the files.

InformationModel

MaschineA1:

• Name
• Description
• MaschineB1
  • Name
    
  • Description
  • Value
    • State
    • Unit (°C)
      
• MaschineC1
  • Name
    
  • Description
  • Value
    • State
    • Unit (rpm)
      

• MaschineD1
  • Name
    
  • Description
  • Value
    • State
    • Unit (Power)
      

Currently I have understood that you have to create each TypeNode and ValueNode individually. To do this, I have to save all NodeIds in order to access the individual nodes and then store new values. I would redistribute new values ​​with a repeating callback.

If I make the values ​​accessible with a data source, I still have to read the files regularly to trigger events.

Is it correct that way ?

best regards

Malte