HI

The Yamaha P-114 is a silent acoustic piano that you can lift the hammers of and use as a digital piano. It has some built in midi voices therefore.
Not really certain what you want to do here .

As you say BIAB can see it as digital piano 1 so your drivers seem set up ok, to talk to Biab . So if you select it as an input, you can use it on the Thru track to drive midi voices in BIAB set on the Thru track in the mixer, as simply a controller midi keyboard . That is it will send the midi notes you play on the keyboard through to your thru track and play that midi voice from your chosen synth or vst /dxi

Mike

BIAB2021 UltraPlus,AsusN55S1Tbssd, W10/64,Akai EIEpro
Yamaha CVP405,SquireStrat, CoolsoftVMidSynth
Novatation Impulse61 Ctr kbd, Cwalk blab Kontakt

http://mikesmusic.byethost16.com/