We have a Mori Seiki SL-25B/1000 lathe with a Fanuc MF-T6 controller. Every so often there is an error, actually two at the same time, 401-x axis vrdy off and 414-x axis detect ERR. The darn thing may run for 2-3 hours then boom the errors. They have always happened while it is machining. Thought maybe someone may have had this problem also. Thanks in advance for any assistance.