Re: [Embedlets-dev] RE: [muvium] Embedlet Container

[Nicola K. B. <nic...@ap...>]

Christopher Smith wrote, On 24/06/2003 20.58:

> [Embedlets-dev] RE: [muvium] Embedlet Container
...
> The point of this meandering down memory lane is that there definitely 
> is a need for a low cost, noise immune, simple, deterministic, 
> short-haul network. It has been the Holy Grail of the industry since its 
> inception. The Automobile industry seems to have settled on CAN, for 
> now... but they  invent a new 'standard' every couple of years anyway.

If they will ever do so. Look at the "standard" for the programming 
languages for PLCs, how they are supported, and most of all, how 
(little) they favor WORA.

In my automation firm in Italy (we sell all over the world, mainly) we 
have seen that the most "standard" sensor connection is Rockwell 
DeviceNet, that is becoming a sort of de-facto standard with the glass 
firms in the automotive field.

The standards are:

  - INTERBUS
  - PROFIBUS
  - DeviceNet
  - CANopen
  - Ethernet.

Basically it really all boils down here where we are to what Rockwell 
and Siemens provide, that is DeviceNet and PROFIBUS. There are 
conversion boxes, but they don't always work as suggested, as the way 
standards are followed are not 100% correct.

Ethernet is catching on very well and stirs a lot of interest, but 
that's on a higher level, not directly on the sensors.

My 3rd party reference for these things is Phoenix Contact 
http://www.phoenixcontact.com/, that basically tries to make things for 
all standards, having in connectors the initial core business.

-- 
Nicola Ken Barozzi                   nic...@ap...
             - verba volant, scripta manent -
    (discussions get forgotten, just code remains)
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