alan smith wrote:

> Just wondering if anyone has an opinion or has learned the hard way, the
> best choice for a 50 to 200 foot data link.  Presently its being done
> RS485, but is that the best choice? Its not multidrop but point to point
> and preference is to use CAT5

CAN doesn't define the physical layer, and whether you get what you want
depends a lot on exactly this layer. There are low-speed high-reliability
physical layer protocols available that work with CAN, but I don't know the
ranges. 

FWIW, as long as it's point to point, RS422 drivers should work with a CAN
controller and a little glue logic. CAN is mostly a higher level protocol
that takes over much of the message handling, and possibly you won't gain
that much in point to point communication.

Gerhard

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