Right.  Now I'd just hoping to find something a bit more cost-effective...

Cheers,
-Neil.


On 12/2/2014 11:53 AM, Denny Esterline wrote:
> Yes, 485 is balanced and most likely would need additional wires.
> CAN is kinda balanced and you need two wires - but you _may_ be able to
> re-purpose your TX and RX lines and use them as CANH and CANL, then send
> and receive on the same pair. That probably falls apart because your high=
er
> protocol needs a collision management mechanism... maybe :-)
> 232 is probably the only one you can implement without regard to the wiri=
ng
> or protocol. Essentially you'd just be changing signaling levels. (typica=
l
> MAX232 would give you about -9V for a logic one and +9V for logic zero)
>
> -Denny

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