Hi after I finished running a program l can't change the spindle speed in MDI with M3S200 or what ever speed. I tried it with the spindle stopped in MDI, M3S200 and also tried changing the speed in MDI with the spindle running at the last speed that was in the program s2000 by manual turning it on. If i turn the control off and on again its works fine. Fanuc OT control on a 2000 YCM lathe. This lathe is new to me and only the 5th/6th program i have tested but they all act the same.