Whenever a plate has been removed from the PIXL the client should notify the PIXL so that it is aware of the change.

The PIXL can be notified of a plate removal with the PlateRemoved method on the PIXLClient.

pixl.PlateRemoved(Bays.Red);

By iterating the Bays, all plates can easily be removed from the PIXL.

// Remove all plates from all bays.
foreach (var bay in new[] { Bays.Black, Bays.Red, Bays.Blue, Bays.Yellow, Bays.Green })
{
    // Notify PIXL that plate has been removed.
    PIXL.PlateRemoved(bay);
}