RS485 RS232 converter

[John]

I have a system that needs a RS485/RS-232 coverter to connect it to the computer to control.

When I use a serial device server For e.g. a Netcom 113 (http://www.vscom.de/666.htm) do I still need this RS485-RS-232 converter or can the software imediately control it using the virtual COM port (the software assumes that an RS-232 cable is connected to the computer).

John

[drmacchi]

Yes i think so. (just my 2 cts) . Ciao

[Bwired]

Sorry dottore, No you don't need it

RS232 full duplex
RS422 full duplex
RS485 4 wire, full duplex
RS485 2 wire, half duplex, with echo
RS485 2 wire, half duplex, without echo

I have the VSCOM Netcom 813 and running a Nemef RF Module (2 wire RS485) on it.
see also http://www.bwired.nl/weblog.asp?id=366
You can adjust it in the webserver (settings) of the Netcom 113

[drmacchi]

Hi Pieter, i was thinking that beause of my serial server where i tried to connect a rs485 device without success. So, not every serial server is the same, i'm a donkey !!

[Bwired]

You are right! not all device are suited to handle RS485, so no donkey
Many regards!