a wee bit O/T - DIFFERENT BUS TYPES

[Darren Logan]

Me again!,

There are many different bus types available these days and I wondered if anyone could "SIMPLY" summarise the pro's and con's of each and perhaps explain the technology behind them and how they may be implemented. In particular, if you want to design a product (PIC Based of course!) which is to be a certain bus compatible - does it need specialist peripherals? does the bus have modules which read easy to generate signals like 4-20mA/RS232 etc.?

Bus types I can think of:

a/ Profibus
b/ HART (there may be a couple of variations of this?)
c/ Interbus
d/ DeviceNet
e/ CAN

I realise this post is asking a bit much but any information would be greatly appreciated.

Regards,
Darren
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This message was ported from CCS's old forum
Original Post ID: 144514798

[Neutone]

:=Me again!,
:=
:=There are many different bus types available these days and I wondered if anyone could "SIMPLY" summarise the pro's and con's of each and perhaps explain the technology behind them and how they may be implemented. In particular, if you want to design a product (PIC Based of course!) which is to be a certain bus compatible - does it need specialist peripherals? does the bus have modules which read easy to generate signals like 4-20mA/RS232 etc.?
:=
:=Bus types I can think of:
:=
:=a/ Profibus
:=b/ HART (there may be a couple of variations of this?)
:=c/ Interbus
:=d/ DeviceNet
:=e/ CAN
:=
:=I realise this post is asking a bit much but any information would be greatly appreciated.
:=
:=Regards,
:=Darren

Those are all protocols that you can buy a specification for. Microchip makes some chips that support CAN protocol and the datasheets should give an overview of the protocol. Modbus protocol is open and can be quickly implimented through software in a PIC. You can get a PDF documenting the specification at www.modbus.org I am using Modbus protocol over 485 hardware. My hardware configuration allows transmition distance of up to a mile with the MAX485 driving shilded twisted pair wiring.
___________________________
This message was ported from CCS's old forum
Original Post ID: 144514799