Could anyone please tell me what is the small revolving circle at the very top right hand side of the screen of the cab2 legacy remote (the battery charge status is always at the top left-hand side). Sometime this small revolving circle appears and when it does, I am not able to get my locomotives to move. After several attempts, removing the batteries from the cab2 while the system was powered and then reinstalling them made the small circle disappear and the locomotives now move.
Thanks!