Denon LC6000

I have the following problem: I would like to connect 2x Denon LC6000 to my computer and play via Mixxx. I have already written the mapping but both players send the same signals. So the computer recognizes them as one player. The signal should be channel 1… B0 and channel 2 B1 as far as I have understood correctly. I hope my explanation is sufficient

Does this help?

Denon DJ LC6000 PRIME | Frequently Asked Questions : inMusic Store?

From my understanding, it should act as a midi channel select switch but that is theory, hope someone with experience joins in

It asks me to choose which channel in Serato when I turn it on, I assume some kind of signal from the software prompts that.

The hot cues flash depending on which sound card is attached and you then press the one whose channel you want to control.