Oh, I see.
As with any midi device, you simply send data from the track. You can use a midi send for that, since the output is already set to your instrument.
Whether the device will respond is entirely dependent on its capabilities. I’ve never tried to set that up exactly, but it’s possible the bcf/r will respond when it receives the bytes a particular control is programmed to send, eg. program knob 1 to send CC1 the device updates the display when it receives CC1. You might have to send a certain channel, etc.