CELOS is not a CNC control system but only a user interface (HMI) developed by DMG MORI. The actual CNC control on your machine will likely be Siemens Sinumerik 840D (or its newer version, 840D sl).
I would recommend checking which version of the control system is installed on your machine and then selecting the appropriate postprocessor accordingly. The postprocessor should generate NC code compatible with your machine.
However, for multi-axis machining, it will be necessary to define a proper machine configuration or modify the postprocessor.
If you need assistance with this, feel free to contact me. I offer postprocessor customization as a service and would be happy to help you with it.
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