Hello Berndt Josef Wulf,
 
there are lots of converters between RS232 or USB to RS485
For example here: http://www.wut.de/e-8wwww-10-inde-000.php
or here: 
http://www.plug-in.de/produkte/datenkommunikation/?user_produkte%5BPATTR%5D=HPG_8-UPG1_29-UPG2_155-UPG3_0&cHash=c8e5341380

regards

I. Meyer


Berndt Josef Wulf wrote:
> G'day,
>
> what are people using to connect and control equipment with RS485 interfaces. 
> I've a number of receivers that I would like to control through a GUI that 
> have RS485 remote control capability.
>
> Currently, I'm using RS232 but would prefer multi-drop RS485 to reduce the 
> number of ports and cabling.
>
> cheerio Berndt
>   


-- 

I. Meyer

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