Hello I,am a new user hence this qestion.
I want serial Modbus communication between arduino DUE's, One master and two slaves.
Can you say where I can find the right Modbus Master and slave code.
( I can only find some Modbus info for the other arduino's not for the arduino DUE )
I don't know much of the MODBUS protocol, however I guess you will need RS485 transceivers (3.3V) and set the USART peripheral in RS485 Mode (Sam3x datasheet page 801).
It seems that there is a Modbus Slave library for the DUE:
I have found the Simple Modbus master/slave arduino DUE library.
Thanks for the information.