[Arduino Mega to a Unistream HMI/PLC via MODBUS]

Thanks, once the parts arrived i will let you guys know if i come right

[Arduino Mega to a Unistream HMI/PLC via MODBUS]

Hi Joe 

I have done a lot with Arduinos but never before had to do Modbus with them. Ive done Modbus between PLCS and other controllers just not Arduinos.

Im going to use and Arduino Mega. it will be a slave device from the Unistream.

[Arduino Mega to a Unistream HMI/PLC via MODBUS]

Good day All 

Im wondering if someone will be able to assist me with the following.

we have a few in house built machinery that runs off Arduino Controllers. We needing to link it up to a Unistream HMI to Display the Data. I know it can be done via Modbus. 

Im just needing some help with the initial Modbus from Arduino to Unistream setup

 

Please Assist where you can