For newbies or archive searching,
http://www.machinist-toolbox.com/qcode.htm

This freeware communication program works with most machinetool
controls, not just Haas and Fadal.
There are two links, one to Fadal and the other to Haas Quick
Code that both include SurfCam's SDNC-II software program for
RS232 communication.
Start either of the Quick Code programs and click on the green
icon button at the bottom of the startup screen. This starts the
RS232 program thats fully configurable and includes a terminal
program for communication diagnostics.

Just a helpful post, not an endorsement.