----- Original Message -----
From: "Micro Eng" <micro_eng@HOTMAIL.COM>

> Any thoughts on using CAN over RS485 ?

It really depends on your application and how much code you want
to write.

With RS485 you'll have a somewhat simpler hardware system and
your choice of processors will be larger. You will need to
implement all the communications protocol yourself.

With CAN the controller chip takes care of actual communication,
retries, etc. Once you have established the messages to be used
in your network the CAN controllers do most of the hard work. CAN
is pretty robust.

I've had some experience with both systems. Ignoring the
processor choices I'd say that in an application that lends
itself to having a single "master" and multiple "slave"
processors that RS485 is more straightforward to implement. In a
system where there is communication between a lot of different
nodes than CAN may make your life easier.

Tim

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