[shiftee]

Okay, I rang the Controllino guys today.

They said to open the terminal a little and press down a bit to try and free the terminals.

I did this and managed to fix all of them

I had to press them quite a few times (you’re flexing the PCB internally so don’t go crazy) but for each one I got a satisfying pop and the terminal opened.

Note to the Controllino guys: It would be great if you could squeeze in the modular connectors under the covers, this would also make tightening the terminals much less stressful

[shiftee]

Thank you. I’m doing more 12V stuff these days

[shiftee]

Using the Ethernet port you could do Modbus-TCP.

Use this library to set up the Controllino as a Modbus TCP Slave: https://www.arduino.cc/en/ArduinoModbus/ArduinoModbus

You can test using QModbus: http://qmodbus.sourceforge.net

[shiftee]

Thank you, I will do so.

I will however store the MAC in the EEPROM so that I don’t need to modify the program for each device.

Do you test each Controllino before it leaves the factory?

Would it be an option to store a unique MAC in the EEPROM when testing the RS485 port?