I don't have the honeycomb myself, but if you can bind to just standard X-Plane controls, these are the hardware commands that you can use. This will respect the dual-press logic on some of the modes in the DFC90 (that is not present in the virtual cockpit, as you don't have two mouse pointers)
afm/sr/cmd/dfc90_hw/fd
afm/sr/cmd/dfc90_hw/hdg
afm/sr/cmd/dfc90_hw/ias
afm/sr/cmd/dfc90_hw/nav
afm/sr/cmd/dfc90_hw/gpss
afm/sr/cmd/dfc90_hw/vs
afm/sr/cmd/dfc90_hw/alt
afm/sr/cmd/dfc90_hw/gs
afm/sr/cmd/dfc90_hw/level
afm/sr/cmd/dfc90_hw/ap
afm/sr/cmd/dfc90_hw/appr
afm/sr/cmd/dfc90_hw/ias_dn
afm/sr/cmd/dfc90_hw/ias_up
afm/sr/cmd/dfc90_hw/ias_sync
afm/sr/cmd/dfc90_hw/vs_dn
afm/sr/cmd/dfc90_hw/vs_up
afm/sr/cmd/dfc90_hw/vs_sync