[time-nuts] rs-422 rs-232 to fast ethernet converter

Chris Albertson albertson.chris at gmail.com
Sat Nov 22 19:59:22 EST 2014

On Sat, Nov 22, 2014 at 2:47 PM, Graham <planophore at aei.ca> wrote:

> I have been contemplating how I will would like to interface to the
> KS-23461 devices using rs-422.
> One option is a rs-422 to USB cable. Seems easy enough.
> But another option I keep stumbling across is a rs-422/rs-232 to fast
> ethernet such as:

They are called a "terminal server".  It's a box with some serial ports and
one Ethernet port.  You access each port via "telent protocol".   You can
buy these surplus on eBay or you can MAKE one very easy.  All you need is
any kind of small computer, a 10 year old notebook PC, a Rasbury Pi, or
whatever, so long as it has both a network and a serial port.  Run a Telnet
SSH server on this and you are on-line and can access the device from any
place on Earth.    I would not buy a small computer for this but if you
have one already then it is free.

Telnet is very old.  I remember using it first in the late 1970's back when
the "Internet" was still called the "Darpa Net" and it only connected a few
dozen computers.


Chris Albertson
Redondo Beach, California

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