How to map an endless rotary knob?

[bburtin]

I'm having trouble mapping the knobs on my Behringer X-Touch Mini to plugins in Studio One 6. I'd like the knobs to work in relative mode. So if I knob 1 is mapped to Fat Channel's high pass filter and I switch tracks, the controller knob position is synced with the HPF value on the new track.

I'm able to map in traditional, 0-127 CC mode. It's not great because when I switch to a new track, the software value jumps to wherever the knob currently is. I'd like the controller to follow the software, as opposed to the other way around.

Is there a way to do this? Gregor's video makes it sound like it should be possible but I can't get it to work with the X-Touch Mini. There are three relative modes on the X-Touch Mini. Each one causes the knob to glitch and stay in one of two positions.

This is what the X-Touch Mini sends when the knob is in relative mode and I turn it left and right:



I can't tell if it's what Studio One is expecting or not. The knob in the Studio One UI gets stuck on one of two values: 1 and 41.

 

[bburtin]

Related question: does Studio One send CC messages to the control surface when you move a mapped knob in the UI? That would help keep the knob in sync with the UI, even if you're using traditional 0-127 CC mode.

 

[bburtin]

Studio One tech support helped me figure this out. You can send continuous controller data in both directions by enabling the "Transmit value" option in the controller knob's context menu. When I do this, the X-Touch knob's position gets updated when I turn the knob in the UI or switch to a different track in Focus Mode.



It turns out that I don't need relative controller messages after all. This works great with traditional CC messages.