I'm trying to connect my Honeywell UDC1000 Controller to my FX2N through FX2n-485-BD Board. I can send commands to the controller and it acts accordingly, but when i'm suppose to get the acknowledge from the controller all i get is the command i send. In the manual they say something about an 'echo' on the comm lines, but nothing about how to get around it. How can i get passed this ?