Hi Theo, so I think you'll need something like serial communication over USB and PiBridge DIO communication, right?
I would recommend you to give Python a try, so it is PySerial and RevPiModIO2 here are some example scripts.
Thanks for the reply. Right, I need to configure the serial communication between the pump and the Connect with dev//tty... ?
After that, with my python code I can write ASCII command ?