The issue

Connecting the USB cable from one of the roast machine's barrels to a different port in the computer, may reassign/rename the Serial port. Because of the serial port reassignment, the Roasting Intelligence (RI) cannot load the serial port saved prior, because it has changed, leading to No sources connected.

The solution

You need to identify the serial port.

USB-connected multi barrel roast machines, have a serial port for each barrel, that can connect to a computer.

If you would like to ensure that you have linked the machine's barrel(s) to the correct instances of the RI, we recommend identifying the serial port referring to each of the machine's barrels.

1. Navigate to Preferences > Machine tab. 
2. Under Machine > Configuration, identify which barrel is selected (e.g., Arc Roaster Barrel 1).
3. Switch to the Measurements tab. Verify that the option Arc Roasters is selected from the dropdown for all measurements.
4. Navigate back to the Machine > Configuration tab. 
5. Select the Gear icon in the Connector setup. 
6. Click on the Serial port dropdown. Take note of the serial port options that appear, e.g. COM3 and COM5. 
7. Refer to the barrel selected from the Machine field (e.g., Arc Roaster Barrel 1) and disconnect the USB cable corresponding to the barrel. If you've selected Barrel 1, undo the physical USB connection for the Arc Roaster's Barrel 1.
8. Click OK.
9. Click Save to finalize the changes.
10. Continue with selecting the serial port.
     

Selecting the Serial port
 

1. Reconnect the barrel's USB cable to the computer, and click the Update button.
2. Select the Serial port option, referring to the barrel's connection. If you haven't already, identify the serial port.
3. Click Save to confirm the changes. The RI instance requires a restart to apply the settings.

Congratulations! You learned how to troubleshoot the USB connection for the Arc Roasters multi-barrel roast machine.