Robert Lewko wrote: > > > On 11/22/06, *Robert Lewko* <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > The "not all" part is where some of these devices use the hardware > lines to handshake. CTS/RTS lines are used and have to be > supported for most devices. However, some devices use the DSR and > DTR lines to augment the basic handshaking. I think that it is > these lines that the USB cables don't support. > > You also have to have a correct cable, although most null modem > cables that you buy support 90% of the devices. I have come > across devices where I had to have a "breakout" box and make my > own cable. > > > Something I forgot to add was this URL to a site where the info on > serial cables is excellent: > > http://www.lammertbies.nl/comm/info/RS-232_null_modem.html
Thanks, an excellent article. I will have to play with my breakout box -- it has almost two decades since I used it last but will have to make a couple of db25-db9 converters first. _______________________________________________ clug-talk mailing list [email protected] http://clug.ca/mailman/listinfo/clug-talk_clug.ca Mailing List Guidelines (http://clug.ca/ml_guidelines.php) **Please remove these lines when replying
