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Communication Basics

Communication Basics

Communication Basics

(OP)
Hello,
I'm trying to understand communications in the utility field.  The protocols available, transport method, physical media.  I'm not sure if I exactly understand the above, But I believe the transport method  is either RS 485 or RS 232, the media is air,fiber, bus (PLC) and the protocol is DNP 3, or Modbus.  Does anyone know of a tutorial that explains this in simple terms, the differences of protocols ?

thanks

RE: Communication Basics

Look up the 'ISO 7-layer model'.

I'll be back with a link in a minute.

RE: Communication Basics

Here:
http://www.google.com/search?q="ISO+7-layer+model"

Poke around the first few Google results pages - there are plenty of links to various explanations and tutorials.


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