Question: Setting up a modbus tcp connection using the ethernet ports on both the arduino mega (with shield) and raspberry pi model B+. For example a

Setting up a modbus tcp connection using the ethernet ports on both the arduino mega (with shield) and raspberry pi model B+. For example a string 12 is sent from raspberry pi to the arduino. The value 1 from the string perfroms some operation, then 2 performs some other operation Hopefully you understand what I am trying to do, Its really the communication between the two that I have no idea how to even start.

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