what is modbus?why we use that protocol?

[karthigowri]

i need to write the coding for modbus by using stm controller.but i don't know how to start that.
because i have no knowledge about modbus?anyone help me to how i implement the modbus in my controller? and tell the basic things about modbus.

 

[esp1]

hi,
Look thru these links.
https://www.google.co.uk/search?q=m...hannel=sb&gfe_rd=cr&ei=DLIRVKWoDOvN7Aa-goHYBQ
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