Computer Interfacing
Discussions about interfacing and electronics

RS 485 to wireless communication


       Computer Interfacing Forum Index -> RS422 and RS485
Author Message

Feb 11, 2010 6:10 am


I'm doing a project in which i have to convert the existing RS 485 communication line to a wireless communication.

I thought of using a transceiver in both the ends, but dunno know how to interface that transceiver with my RS 485 port.

kindly help me in detail how should i proceed with this thing.

New User

Joined: 12 Feb 2010
Posts: 6
Location: Indonesia

Feb 15, 2010 7:43 am

First i think you should convert RS485 to RS232. And then you can continue to transfer the data via wireless communication.

Exs RS485 ===> RS485/232 converter ===> Radio Data.
Junior Member

Joined: 13 Apr 2010
Posts: 16
Location: USA

Apr 13, 2010 7:31 pm

There are Wireless RF RS485 modules available, use Google.
New User

Joined: 30 Dec 2014
Posts: 1

Dec 30, 2014 12:41 pm

When PC is polling all machines and all machines are on, the system works OK. But when i swich off either machine on network, the communication gets halted and observed that MAX485 ic starts heating. I have used 680E resistor to pull up D+ line and Pull down D- line at each machine end. I also tried 180E termination resistance on bothe ends of network but still it not worked.

       Computer Interfacing Forum Index -> RS422 and RS485
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