Okuma Alarm-B 2392 MULTI CYCLE B illegal order
B < 0-deg or B >= 180-deg
In G71, G72 thread cutting cycle, tangent (B/2) is negative or resulted in overflow.
G71: Compound thread cutting cycle on side face
G72: Compound thread cutting cycle on end face
Hexadecimal number of mantissa of floating-point of tangent (B/2)
Probable Faulty Locations
N010 G71 X100 Z100 B181 D3 H10 F5
Measures to Take
Check the B command value.
It must be 0<=B<180-deg.