What is "Fault register latch 1"?



I am having 103 servo alarm error-

after much troubleshooting, swapping amplifiers, servos,
I found something that might be the clue i am after



on diagnostic screen there is a field

"Fault register latch 1" for each axis





The other axis shows

“Fault register latch 1 = 0x40"

(Binary 100,0000)



But the X axis shows

“Fault register latch 1 =0X600040

(Binary 1100,0000,0000,00000,0000,0100,0000)



This definitely seems odd- but I cannot why or the cause