Cacophony

What is this?

Cacophony is a quasar extension module helping with integration of quasar-made OPC-UA servers into WinCC OA SCADA.

Tutorial: https://www.youtube.com/watch?v=g2LWOx1BufI

Basic usage mode

1. Clone it in your quasar project directory
2. From your quasar project directory run: python3 Cacophony/generateStuff.py
3. All CTL files in Cacophony/generated are what is needed to make WinCC OA project profit from that particular quasar OPC-UA server.
4. For a detailed reference, see: https://www.youtube.com/watch?v=g2LWOx1BufI

Using Design with meta

By default, Cacophony uses Design/Design.xml (user design only). If you need to include quasar's internal meta-design classes in your generation:

Run with the --use_design_with_meta flag:

python3 Cacophony/generateStuff.py --use_design_with_meta

This will:

• Merge Design/Design.xml with Meta/design/meta-design.xml
• Create Design/DesignWithMeta.xml temporarily in your Design folder
• Use the merged design for code generation
• Automatically delete DesignWithMeta.xml after successful generation

Mixed Instantiation Support

Cacophony now parses design-instantiated children of configuration-instantiated objects

Use case example:

• A class AMAC is instantiated from configuration XML
• AMAC has children (e.g., 4 HVSwitch objects) instantiated from design

In this scenario, Cacophony will:

• Parse configuration XML to create AMAC instances
• Automatically instantiate design-defined children for each AMAC instance

Thanks to iTk Strips team (and more specifically to Kees Benkendorfer) for their contribution

Calculated Variables Support

If you need to include calculated variables in your generation:

Run with the --config_file option and provide a configuration XML file,

python3 Cacophony/generateStuff.py --config_file config.xml

This will:

• Detect unique calculated variable profiles per class
• Generate separate DPTs for each profile (e.g., [<DPT_prefix>]classname_CVX)
• Generate the appropriate configuration based on each profile classification