Sorry I thought I had that address forwarded. I use RS232 Hex Com Tool to verify the serial link is OK. There is a problem with changing Com Port settings after connecting, this seems to be something to do with the interface to windows, I'm going to try using the FTDI dll instead. I'm still playing with my new interface, the output transistor was too slow so I need to have a rethink. If its an 8V they are usually 15625 baud, 16V may be 7812 baud, ignore the 9600, that was just there for development purposes.
Cheers
James