Alexander Ewald demonstrates how to use Bitwig Studio's HW CV Out device to send modulation and automation to any addressable parameter on your Eurorack hardware. The walkthrough uses a Make Noise QPAS filter as the target, routing CV from Bitwig to control both cutoff and resonance independently.
Because two audio outputs were already occupied for pitch and gate on the XPO oscillator, the demo switches from an Audio 6 to an Expert Sleepers ES-8, which provides 8 DC-coupled outputs. That hardware detail matters: only DC-coupled interfaces can pass CV reliably, so your output count and interface type both shape what's possible.
Adding a second HW CV Out device to a free channel handles the resonance, and from there Bitwig's modulation system takes over. You can tie any of those CV outputs to an LFO, automate them from a MIDI clip, or stack multiple devices up to your interface's output limit. The whole patch can be saved as a preset and recalled in future projects.