Re: 'best' control network? Devicenet vs Lonworks vs CAN vs Fieldbus vs Ethernet ???

From: j.b. miller (invalidjbmiller_at_cogeco.ca)
Date: 07/23/04 

Date: Fri, 23 Jul 2004 07:40:19 -0400

Whatever system you look at, be sure it can handle broken wiring or loss of
communication.Especially it this is a 'critical' application.
30 years ago we chose to do an 'in-house' design for our remote energy
control system.Simple,reliable,lightning
proof,bidirectional,interlaced,tri-level,hackeproof and best of all ran on a
true single wire.This gave us a built in backup as we leased wires from Bell
and they were always in pairs! The system is still in use today.
Jay

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