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From: baranovus on 5 May 2008 12:24
Hello All.
I have two distant locations connected with 3-wire cable - "+", "-"
and "common". Voltage 24V DC can occasionally appear between "+" or
"-" and "common". I have to install Ethernet communication through
this cable. Modification of special Netgear "Ethernet over Power
line" switch solves the problem but I have to disassemble the switch,
cut and reconnect some wires.
It's too difficult to rebuilt about 200 Netgear switches. Maybe
somebody knows the device, which does it 'as is'?
Thanks.
From: Tim Wescott on 5 May 2008 12:32
On Mon, 05 May 2008 09:24:59 -0700, baranovus wrote:

> Hello All.
> I have two distant locations connected with 3-wire cable - "+", "-" and
> "common". Voltage 24V DC can occasionally appear between "+" or "-" and
> "common". I have to install Ethernet communication through this cable.
> Modification of special Netgear "Ethernet over Power line" switch
> solves the problem but I have to disassemble the switch, cut and
> reconnect some wires.
> It's too difficult to rebuilt about 200 Netgear switches. Maybe
> somebody knows the device, which does it 'as is'? Thanks.

Try this question on sci.engr.control -- there's a lot of industrial
control guys on that group, one of whom may know the answer.

--
Tim Wescott
Control systems and communications consulting
http://www.wescottdesign.com

Need to learn how to apply control theory in your embedded system?
"Applied Control Theory for Embedded Systems" by Tim Wescott
Elsevier/Newnes, http://www.wescottdesign.com/actfes/actfes.html
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