>(2)  Somebody on the list  recently indicated that it was  easy to convert
>from RS232 to RS485, I have no problem at the PIC level but without
>purchasing an expensive RS485 Card for my PC which is  intended  to be the
>master controller in a multi-drop system I am having difficulty in enabling
>the RS485 driver from a standard PC RS232 port while transmitting  and then
>disabling the driver and still be able to listen  for a reply on the PC port.

Try B & B Electronics on the web, or send e-mail to somebody at
http://www.carmacon.com because I know they have one, I just don't know if
they sell them.

Andy


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Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865
          Hardware & Software for Industry & R/C Hobbies
        "Go fast, turn right, and keep the wet side down!"
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