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modbus communication

 
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muralid



Joined: 13 Oct 2015
Posts: 9

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modbus communication
PostPosted: Sat Oct 17, 2015 4:15 am     Reply with quote
hi guys
I would like to interface pic with plc using modbus communication.
I don't know how to start with.
kindly help
temtronic



Joined: 01 Jul 2010
Posts: 9225
Location: Greensville,Ontario

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PostPosted: Sat Oct 17, 2015 5:30 am     Reply with quote
First I'd get the examples that CCS supplies 'up and running'.

After that, well, it all depends on what your project is required to do.

ModBUS is just another protocol/system/format for allowing device to 'talk' to each other.


Jay
Ttelmah



Joined: 11 Mar 2010
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PostPosted: Sat Oct 17, 2015 8:40 am     Reply with quote
And of course there is the question of 'modbus over what'.

Modbus can use a wide variety of different 'carriers'. Ethernet, RS485, etc., and then the data can use ASCII or the RTU formats.
There is not a single 'modbus'.....
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