Remedy: SPC software disconnect alarm of B axis alfa pulse coder
Cause 1 : Turn off the power of CNC machine then remove and reinsert the B axis pulse coder cable,If alarm not reset replaced pulse coder and also check pulse coder cable
Cause 2 : Turn off the power of CNC machine and check servo motor winding for oil not inter in servo motor winding
Oil inter in motor winding show in Picture above