Vasile Surducan wrote:
>>> I am planning to deploy a network of (approx 70) remote devices via
>>> CAT5E cabling. It will carry 24Vdc as well as RS485 data at a low
>>> speed (2400 baud at a guess).
>>
>> I don't know what your constraints are, but RS-485 is so 1990s.
>> Nowadays CAN is a better alternative in most cases.  You get the low
>> level collision detection, retry, and message checksum validation
>> all handled transparently by the silicon in the microcontroller.
>> You have to do these things manually in the firmware with RS-485.
>
> CAN works at 1km ?

I don't know where you got the 1Km from.  CAN does work from one end of a
large oil tanker to the other at 200Kbits/second, which is what NMEA 2000 is
based on.


********************************************************************
Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products
(978) 742-9014.  Gold level PIC consultants since 2000.
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist