Has anyone else attempted 232 control???

I tried using hyperterminal to send some of the commands noted above, but got no response from the 990.

I used a straight through db9 cable, and also tried a null modem cable, but still didn't get any response by the 990.

HOWEVER, it may be a problem with not knowing how to send these commands to the 990 from hyperterminal. I am not well versed in this program unfortunately.

Has anyone used hyperterminal for this purpose??