Hi,

I've got an Arduino Uno connected to the USB1 port of my Neuron M203, which is identified as /dev/ttyACM0. How do I open a connection to this device with io.openport(). This function needs a string argument containing the communication parameters: 'serial:6:9600,8,N,1'. Does anyone know where I can find the correct serial ID ?

edit

I've connected an usb to serial adapter and then it works with serial ID 10 for /dev/ttyUSB0.
My code is based on the custom serial protocol example:

def := 'serial:10:9600,8,N,1';
handle := io.openport(def);

IF handle >= 0 THEN
   state := 1;
END_IF;

handle is of type: io.commhandle which is an int. Whether or not io.openport works, it seems that the value of handle is always 0, so testing it makes no sense ?

Thanks,
Steve