Andrew,
My guess would be that TBD means ‘To Be Done’ - i.e. work in progress - but Lee would have to advise.
As Steve says, if you can give us some more info about your unit, or a link to the installation/setup manual(s), we can take a better informed look for you.
I take it you are using the Orange and Black wires in the FTDI to supply Data Out and Ground respectively. Also as Steve has said, matching baud rates both ends is Critical.
Best Regards
Peter